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Securities and Exchange Commission
Washington, D.C. 20549
FORM 10-K
(Mark One)

|X| Annual Report Pursuant to Section 13 or 15(d) of the Securities Exchange
Act of 1934 for the fiscal year ended December 28, 2002 or

| | Transition Report Pursuant to Section 13 or 15(d) of the Securities
Exchange Act of 1934 for the transition period from to

Commission file number 0-20388

LITTELFUSE, INC.
(Exact name of registrant as specified in its charter)

Delaware 36-3795742
(State or other jurisdiction of (I.R.S. Employer Identification No.)
incorporation or organization)

800 East Northwest Highway,
Des Plaines, Illinois 60016
(Address of principal executive offices) (Zip Code)

847/824-1188
(Registrant's telephone number, including area code)

Securities registered pursuant to Section 12(b) of the Act: None

Securities registered pursuant to Section 12(g) of the Act: Common Stock, $.01
par value, and Warrants to purchase shares of Common Stock, $.01 par value

Indicate by check mark whether the registrant (1) has filed all reports
required to be filed by Section 13 or 15(d) of the Securities Exchange Act of
1934 during the preceding 12 months (or for such shorter period that the
registrant was required to file such reports), and (2) has been subject to such
filing requirements for the past 90 days. Yes |X| No | |

Indicate by check mark if disclosure of delinquent filers pursuant to Item
405 of Regulation S-K is not contained herein, and will not be contained, to the
best of registrant's knowledge, in definitive proxy or information statements
incorporated by reference in Part III of this Form 10-K or any amendment to this
Form 10-K. |X|

Indicate by check mark whether the registrant is an accelerated filer (as
defined in Rule 12b-2 of the Act). Yes |X| No | |

The aggregate market value of 21,497,491 shares of voting stock held by
non-affiliates of the registrant was approximately $497,236,967 based on the
last reported sale price of the registrant's Common Stock, $.01 par value, as
reported on The Nasdaq Stock Market on June 28, 2002.

As of March 14, 2003, the registrant had outstanding 21,781,135 shares of
Common Stock, $.01 par value.

Portions of the following documents have been incorporated herein by
reference to the extent indicated herein:

Littelfuse, Inc. Proxy Statement dated March 28, 2003 (the "Proxy
Statement") -- Part III.

Littelfuse, Inc. Annual Report to Stockholders for the year ended December
28, 2002 (the "Annual Report to Stockholders") -- Parts II and III.



PART I

ITEM 1. BUSINESS

GENERAL

Littelfuse, Inc. (the "Company" or "Littelfuse") is the world's leading
supplier of circuit protection products for the electronics industry. The
Company provides the broadest line of circuit protection solutions to worldwide
customers. The Company is also the leading provider of circuit protection for
the automotive industry and the third largest producer of electrical fuses in
North America.

In the electronic market, the Company supplies leading manufacturers such
as Acer, Alcatel, Celestica, Dell, Flextronics, Fuji, GE, HP, IBM, Intel, LG,
Motorola, Nokia, Palm, Samsung and Sony. In the automotive market, the Company's
customers include major automotive manufacturers in North American, Europe and
Asia such as BMW, DaimlerChrysler, Ford Motor, General Motors and Toyota. The
Company also supplies wiring harness manufacturers and auto parts suppliers
worldwide including; Alcoa Fujikawa, Auto Zone, Delphi, Lear, Pep Boys and
Yazaki. The Company also competes in the electrical fuse market with
representative customers such as Abbott, Carrier, Dana, DuPont, John Deere, GE,
Heinz, International Paper, Lithonia Lighting, Marconi, Merck; Otis Elevator,
Procter & Gamble and Rockwell. See "Business Environment: Circuit Protection
Market."

The Company manufactures many of its products on fully integrated
manufacturing and assembly equipment. The Company fabricates and assembles a
majority of its products and maintains product quality through a rigorous
quality assurance program with all sites certified under ISO 9000 standards and
its world headquarters certified under the QS9000 and ISO 14001 standards.

The Company's products are sold worldwide through a direct sales force and
manufacturers' representatives. For the year ended December 28, 2002,
approximately 54% of the Company's net sales were to customers outside the
United States (exports and foreign operations).

References herein to "2000" or "fiscal 2000" refer to the fiscal year
ended December 30, 2000. References herein to "2001" or "fiscal 2001" refer to
the fiscal year ended December 29, 2001. References herein to "2002" or "fiscal
2002" refer to the fiscal year ended December 28, 2002.

The Company's annual report on Form 10-K, quarterly reports on Form 10-Q,
current reports on Form 8-K, and all amendments to those reports are currently
available free of charge through the "Investor Relations" section of the
Company's internet website (http://www.littelfuse.com) as soon as practicable
after such material is electronically filed with, or furnished to, the
Securities and Exchange Commission.


1


BUSINESS ENVIRONMENT: CIRCUIT PROTECTION MARKET

The Company serves customers in three major product areas of the circuit
protection market; electronic, automotive and electrical or power fuses. Net
sales by product area for the periods indicated are as follows:



Fiscal Year
(in thousands)
--------------------------------------
2002 2001 2000
-------- -------- --------

Electronic $150,838 $146,342 $232,677
Automotive 98,235 91,061 100,036
Electrical 34,194 34,746 39,207
-------- -------- --------
Total $283,267 $272,149 $371,920
======== ======== ========


ELECTRONIC PRODUCTS

Electronic circuit protection products are used to protect circuits in a
multitude of electronic systems. The Company's product offering includes a
complete line of overcurrent and overvoltage solutions including: (1) fuses and
protectors (2) positive temperature coefficient (PTC) resettables (3) varistors
(4) electrostatic discharge (ESD) suppressors (5) discrete transient voltage
suppression (TVS) diodes, TVS diode arrays and protection thyristors (6) gas
discharge tubes and (7) fuseholders, blocks and other.

Electronic fuses and protectors are devices that contain an element which melts
in an overcurrent condition. Electronic miniature and subminiature fuses are
designed to provide circuit protection in the limited space requirements of
electronic equipment. The Company's fuses are used in a wide variety of
electronic products including wireless telephones, consumer electronics,
computers, modems and telecommunications equipment. The Company markets its
products under the following trademarked and brand names: PICO(R) II; NANO(2)
(R) SMF; ALF(TM) II and SMTelecom(TM).

Resettables are positive temperature coefficient (PTC) polymer devices that
limit the current when an overcurrent condition exists and then reset themselves
once the overcurrent condition has cleared. The Company markets a line of
surface mount PTC devices used primarily for computer and peripheral
applications such as motherboards, disk drives, modems and printers.

Varistors are ceramic-based high-energy absorption devices that provide
transient overvoltage and surge suppression for automotive, telecommunication,
consumer electronics and industrial applications. The Company's product line
offers both radial leaded and multilayer surface mount products.

Electrostatic discharge (ESD) suppressors are polymer-based devices that protect
an electronic system from failure due to rapid transfer of electrostatic charge
to the circuit. The Company's PulseGuard(R) line of ESD suppressors is used in
PC and PC peripherals, digital consumer electronics and wireless applications.


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Discrete diodes, diode arrays and protection thyristors are fast switching
silicon semiconductor structures. Discrete diodes protect a wide variety of
applications from overvoltage transients such as ESD, inductive load switching
or lightning, while diode arrays are used primarily as ESD suppressors.
Protection thyristors are commonly used to protect telecommunications circuits
from overvoltage transients such as those resulting from lightning. Applications
include telephones, modems, data transmission lines and alarm systems.

Gas discharge tubes are very low capacitance devices designed to suppress any
transient voltage event that is greater than the breakover voltage of the
device. These devices are primarily used in telecom interface and conversion
equipment applications as protection from overvoltage transients such as
lightning.

In addition to the above products, the Company is also a supplier of fuse
holders (including OMNI-BLOK(R)), fuse blocks (including Powr-Blok(R) power
distribution systems) and fuse clips primarily to customers that purchase
circuit protection devices from the Company.

AUTOMOTIVE PRODUCTS

Fuses are extensively used in automobiles, trucks, buses and off-road equipment
to protect electrical circuits and the wires that supply electrical power to
operate lights, heating, air conditioning, radios, windows and other controls.
Currently, a typical automobile contains 30 to 70 fuses, depending upon the
options installed. The fuse content per vehicle is expected to continue to grow
as more electronic features are included in automobiles. The Company also
supplies fuses for the protection of electric and hybrid vehicles.

The Company is a primary supplier of automotive fuses to United States, Japanese
and European automotive OEMs, automotive component parts manufacturers and
automotive parts distributors. The Company also sells its fuses in the
replacement parts market, with its products being sold through merchandisers,
discount stores and service stations, as well as under private label by national
firms. The Company invented and owns all of the U.S. patents related to the
blade type fuse which is the standard and most commonly used fuse in the
automotive industry. The Company's automotive fuse products are marketed under
the following trademarked brand names: ATO(R), MINI(R), MAXI(TM), MIDI(R),
MEGA(TM) and CablePro(TM).

A majority of the Company's North American automotive fuse sales are made to
wire harness manufacturers that incorporate the fuses into their products. The
remaining automotive fuse sales are made directly to automotive manufacturers
and through distributors who in turn sell most of their products to automotive
product wholesalers, such as warehouse distributors, discount stores and service
stations.

The Company has licensed its patented MINI(R) and MAXI(TM) automotive fuse
designs to Bussmann, a division of Cooper Industries. Bussmann is the Company's
largest domestic competitor. Additionally, the Company has entered into a
licensing agreement with Pacific Engineering Company, Ltd., a Japanese fuse
manufacturer, which produces and distributes the Company's patented MINI(R)
automotive fuses to the Pacific Rim manufacturing operations of


3


Japanese based automobile manufacturers. See "Business -- Patents, Trademarks
and Other Intellectual Property" and "Competition."

ELECTRICAL PRODUCTS

The Company entered the electrical fuse market in 1983 and manufactures and
sells a broad range of low-voltage circuit protection products to electrical
distributors and their customers in the construction, original equipment
manufacturers ("OEM") and industrial maintenance and repair operations ("MRO")
markets.

Power fuses are used to protect circuits in various types of industrial
equipment and circuits in industrial plants, office buildings and residential
units. They are rated and listed under one of many Underwriters' Laboratories
fuse classifications. Major applications for power fuses include protection from
over-load and short-circuit currents in motor branch circuits, heating and
cooling systems, control systems, lighting circuits and electrical distribution
networks.

The Company's POWR-GARD(R) product line features the Indicator(TM) series power
fuse used in both the OEM and MRO markets. The Indicator(TM) technology provides
visual blown fuse indication at a glance, reducing maintenance and downtime on
production equipment. The Indicator(TM) product offering is widely used in motor
protection and industrial control panel applications.

PRODUCT DESIGN AND DEVELOPMENT

The Company employs scientific, engineering and other personnel to continually
improve its existing product lines and to develop new products at its research
and engineering facilities in Des Plaines, Illinois and Dundalk, Ireland. The
Product Technology Department maintains a staff of engineers, chemists,
metallurgists, scientists and technicians whose primary responsibility is the
design and development of new products.

Proposals for the development of new products are initiated primarily by sales
and marketing personnel with input from customers. The entire product
development process typically ranges from 6 to 18 months with continuous efforts
to reduce the development cycle. During the fiscal years 2002, 2001 and 2000,
the Company expended $8.3 million, $8.9 million and $11.2 million, respectively,
on product design and development.

PATENTS, TRADEMARKS AND OTHER INTELLECTUAL PROPERTY

The Company generally relies on patent and trademark laws and license and
nondisclosure agreements to protect intellectual property and proprietary
products. In cases where it is deemed necessary by management, key employees are
required to sign an agreement that they will maintain the confidentiality of the
Company's proprietary information and trade secrets. This information, for
business reasons, is not disclosed to the public.

As of December 28, 2002, the Company owned 128 patents in North America, 15
patents in the European Economic Community and 12 patents in other foreign
countries. The Company has


4


also registered trademark protection for certain of its brand names and logos.
The 128 North American patents are in the following product categories: 80
electronic, 26 automotive, 21 electrical fuse and 1 miscellaneous.

New products are continually being developed to replace older products. The
Company regularly applies for patent protection on such new products. Although
in the aggregate the Company's patents are important in the operation of its
businesses, the Company believes that the loss by expiration or otherwise of any
one patent or group of patents would not materially affect its business.

The Company currently licenses its MINI(R) and MAXI(TM) automotive fuse
technology to Bussmann, a division of Cooper Industries and the Company's
largest domestic competitor. The license granted in 1987 is nonexclusive and
grants the Company the right to receive royalties of 4% of the licensee's
revenues from the sale of the licensed products with an annual minimum of
$25,000. This license expires upon the expiration of the licensed product
patents.

In addition, a second license covering the MINI(R) Fuse technology was granted
to Pacific Engineering Company, Ltd., a Japanese manufacturer that produces and
distributes the Company's patented automotive fuses to Pacific Rim-based
automotive manufacturers. The license provides the Company with royalties of
2.5% of the licensee's revenues from the sale of the licensed products, with an
annual minimum of $100,000. This second license expires on April 6, 2006.

License royalties amounted to $369,000, $390,000 and $338,000 for fiscal 2002,
2001 and 2000, respectively.

MANUFACTURING

The Company performs the majority of its own fabrication and stamps some of the
metal components used in its fuses, holders and switches from raw metal stock
and makes its own contacts and springs. However, the Company does depend upon a
single source for a substantial portion of its stamped metal end caps for one
family of electronic fuses. The Company believes that alternative stamping
sources are available at prices which would not have a material adverse effect
on the Company. The Company also performs its own plating (silver, nickel, zinc,
tin and oxides). In addition, all thermoplastic molded component requirements
used for such products as the ATO(R), MINI(R) and MAXI(TM) fuse product lines
are met through the Company's in-house molding capabilities.

After components are stamped, molded, plated and readied for assembly, final
assembly is accomplished on fully automatic and semi-automatic assembly
machines. Quality assurance and operations personnel, using techniques such as
Statistical Process Control, perform tests, checks and measurements during the
production process to maintain the highest levels of product quality and
customer satisfaction.

The principal raw materials for the Company's products include copper and copper
alloys, heat resistant plastics, zinc, melamine, glass, silver and solder. The
Company depends upon a sole source for several heat resistant plastics and zinc.
The Company believes that suitable alternative


5


heat resistant plastics and zinc are available from other sources at prices that
would not have a material adverse effect on the Company. All of the other raw
materials are purchased from a number of readily available outside sources.

A computer-aided design and manufacturing system (CAD/CAM) expedites product
development and machine design, while reliability and high power laboratories
test new products, prototype concepts and production run samples. The Company
participates in "Just-in-Time" delivery programs with many of its major
suppliers and actively promotes the building of strong cooperative relationships
with its suppliers by involving them in pre-engineering product and process
development.

MARKETING

The Company's domestic sales and marketing staff of over 70 people maintains
relations with major OEMs and distributors. The Company's sales and engineering
personnel interact directly with the OEM engineers to ensure maximum circuit
protection and reliability within the parameters of the OEM's circuit design.
Internationally, the Company maintains a sales and marketing staff of over 40
people and sales offices in The Netherlands, England, Ireland, Singapore,
Taiwan, Japan, Brazil, Hong Kong, Korea and China. The Company also markets its
products indirectly through a worldwide organization of over 120 manufacturers'
representatives and distributes through an extensive network of electronic,
automotive and electrical distributors.

ELECTRONIC. The Company retains manufacturers' representatives to sell its
electronic products and to call on major domestic and international OEMs and
distributors. The Company distributes approximately one-third of its domestic
products directly to OEMs, with the remainder sold through distributors
nationwide.

In the Asia-Pacific region, the Company maintains a direct sales staff and
utilizes manufacturers' representatives and distributors in Japan, Singapore,
Korea, Taiwan, China, Malaysia, Thailand, Hong Kong, India, Indonesia,
Philippines and Australia. In Europe, the Company maintains a direct sales force
and utilizes manufacturers' representatives and distributors to support a wide
array of customers.

AUTOMOTIVE. The Company maintains a direct sales force to service all the major
automotive OEMs (including the United States manufacturing operations of
foreign-based OEMs) through both the engineering and purchasing departments of
these companies. Twenty-two manufacturers' representatives represent the
Company's products to aftermarket fuse retailers such as Autozone and Pep Boys.
In Europe, the Company uses both a direct sales force and manufacturers'
representatives to distribute its products to Mercedes-Benz, BMW, Volvo, Saab,
Jaguar and other OEMs, as well as aftermarket distributors. In the Asia-Pacific
region, the Company has licensed its automotive fuse technology to a Japanese
firm, which supplies the majority of the automotive fuses to the Japanese
customers in the region including Toyota, Honda and Nissan.


6


ELECTRICAL. The Company markets and sells its power fuses through manufacturers'
representatives across North America. These representatives sell power fuse
products through an electrical distribution network comprised of approximately
1,600 distributor buying locations. These distributors have customers that
include electrical contractors, municipalities, utilities and factories
(including both MRO and OEM).

The Company's field sales force (including application engineers) and
manufacturers' representatives call on both distributors and end-users
(consulting engineers, municipalities, utilities and OEMs) in an effort to
educate these customers on the capabilities and characteristics of the Company's
products.

BUSINESS SEGMENT INFORMATION

The Company has three reportable business segments: The Americas, Europe and
Asia-Pacific. For information with respect to the Company's operations in its
three geographic areas for the fiscal year ended December 28, 2002, see "Item 8.
Financial Statements and Supplementary Data - Business Segment Information"
incorporated herein by reference.

CUSTOMERS

The Company sells to over 10,000 customers worldwide. No single customer
accounted for more than 10% of net sales during the last three years. During the
2002, 2001 and 2000 fiscal years, net sales to customers outside the United
States (exports and foreign operations) accounted for approximately 53.7%, 51.9%
and 48.4%, respectively, of the Company's total net sales.

COMPETITION

The Company's products compete with similar products of other manufacturers,
some of which have substantially greater financial resources than the Company.
In the electronics market, the Company's competitors include AVX, Bel Fuse,
Bourns, Cooper Electronics, EPCOS, Raychem Division of TYCO International, San-O
Industrial Corp., STMicroelectronics and Wickmann-Werke GmbH. In the automotive
fuse market, the Company's competitors, both in sales to automobile
manufacturers and in the aftermarket, include Bussmann Division of Cooper
Industries, Pudenz Division of Wickmann-Werke and MTA in Italy. The Company
licenses several of its automotive fuse designs to Bussmann. In the electrical
market, the Company's major competitors include Cooper Bussmann and Ferraz
Shawmut. The Company believes that it competes on the basis of innovative
products, the breadth of its product line, the quality and design of its
products and the responsiveness of its customer service in addition to price.

BACKLOG

The backlog of unfilled orders at December 28, 2002 was approximately $29.2
million, compared to $21.9 million at December 29, 2001. 2002 order backlog is
believed to be generally firm and substantially all of the orders are scheduled
for delivery in 2003.


7


EMPLOYEES

During 2002, the Company employed an average of 3,145 persons. Approximately 50
employees in Des Plaines, 410 employees in Mexico and 155 employees in Ireland
are covered by collective bargaining agreements. The Des Plaines agreement
expires March 31, 2005, the Mexico agreement expires February 1, 2005 and the
Ireland agreement expires December 31, 2003. In 2002, the Company completed
negotiations with the unionized employees in Korea related to the announced
restructuring of that facility and there are currently no employees covered by
collective bargaining agreements in Korea. Overall, the Company has historically
maintained satisfactory employee relations and many of its employees have long
experience with the Company.

ENVIRONMENTAL REGULATION

The Company is subject to numerous federal, state and local regulations relating
to air and water quality, the disposal of hazardous waste materials, safety and
health. Compliance with applicable environmental regulations has not
significantly changed the Company's competitive position, capital spending or
earnings in the past and the Company does not presently anticipate that
compliance with such regulations will change its competitive position, capital
spending or earnings for the foreseeable future. The Company employs an
environmental engineer to monitor regulatory matters and believes that it is
currently in compliance in all material respects with applicable environmental
laws and regulations, except with respect to its facility located in Ireland.
This facility was acquired in October 1999 in connection with the acquisition of
the Harris suppression products division. Corrective steps are being taken to
bring this facility into compliance with Irish environmental laws, and the
Company received an indemnity from Harris Corporation with respect to these
matters.

RISKS AND UNCERTAINTIES

The Company's business is subject to several risks and uncertainties, including:
(a) the highly competitive nature of the Company's industry and the impact that
competitors' new products and pricing may have upon the Company, (b) risks
associated with the Company's ability to manufacture and deliver products in a
manner that is responsive to its customers' needs, (c) risks of business
interruption resulting from labor disputes and (d) the likelihood that revenues
may vary significantly from one accounting period to another due to a variety of
factors, including customers' buying decisions, the Company's product mix and
general market and economic conditions. Such factors, as well as shortfalls in
the Company's results of operations as compared with analysts' expectations,
capital market conditions and general economic conditions, may also cause
substantial volatility in the market price of the Company's common stock.

ITEM 2. PROPERTIES

LITTELFUSE FACILITIES

The Company's operations are located in 21 owned or leased facilities worldwide,
representing an aggregate of approximately 950,000 square feet. The U.S.
headquarters and principal


8


fabrication and distribution facility is located in Des Plaines, Illinois,
supported by two additional plants in Illinois and one in Mexico. European
headquarters and the primary European distribution center is in Utrecht, The
Netherlands, with manufacturing plants in England, Ireland and Switzerland. Asia
operations include sales and distribution centers located in Singapore, Taiwan,
Japan and Korea, with manufacturing plants in China and the Philippines. The
Company does not believe that it will encounter any difficulty in renewing its
existing leases upon the expiration of their current terms. Management believes
that the Company's facilities are adequate to meet its requirements for the
foreseeable future.

The following table provides certain information concerning the Company's
facilities:



Lease
Size Lease/ Expiration
Location Use (sq.ft.) Own Date Primary Product
- -------- --- -------- ------ ---------- ---------------

Des Plaines, Illinois Administrative, 340,000 Owned -- Auto, Electronic,
Engineering, Electrical
Manufacturing,
Testing and Research

Centralia, Illinois Manufacturing 45,200 Owned -- Electronic

Arcola, Illinois Manufacturing 36,000 Owned -- Electrical

Piedras Negras, Mexico Manufacturing 50,031 Leased 2003 Auto, Electronic,
Electrical

Piedras Negras, Mexico Manufacturing 12,594 Leased 2003 Electronic and
Electrical

Piedras Negras, Mexico Manufacturing, 22,711 Leased 2004 Electronic and
Warehousing Electrical

Piedras Negras, Mexico Warehousing 27,306 Leased 2006 Electronic and
Electrical

Swindon, England Manufacturing 55,000 Leased 2004 Electronic

Utrecht, The Netherlands Sales, 34,642 Owned -- Auto and Electronic
Administrative and
Distribution

Grenchen, Switzerland Manufacturing 11,000 Owned -- Auto



9




Lease
Size Lease/ Expiration
Location Use (sq.ft.) Own Date Primary Product
- -------- --- -------- ------ ---------- ---------------

Singapore Sales and 19,022 Leased 2003 Electronic & Auto
Distribution

Seoul, Korea Sales 29,175 Owned -- Electronic and Auto

Philippines Manufacturing 58,127 Owned -- Electronic

Suzhou, China Manufacturing 40,000 Owned -- Electronic

Suzhou, China Warehousing 169,000 Leased 2004 Electronic

Hong Kong, China Sales 3,079 Leased 2003 Electronic

Taipei, Taiwan Sales 2,583 Leased 2003 Electronic

Yokohama, Japan Sales 6,243 Leased 2003 Electronic

Yokohama, Japan Distribution 17,858 Leased 2004 Electronic

Sao Paulo, Brazil Sales 800 Leased 2003 Electronic & Auto

Dundalk, Ireland Manufacturing 120,000 Owned -- Electronic & Auto


Properties with lease expirations in 2003 renew at various times throughout the
year. At this point, the Company does not anticipate any material impact as a
result of such expirations.

ITEM 3. LEGAL PROCEEDINGS

The Company is not a party to any legal proceedings that it believes will have a
material adverse effect upon the conduct of its business or its financial
position.

ITEM 4. SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS

There were no matters submitted to the Company's stockholders during the fourth
quarter of fiscal 2002.


10


EXECUTIVE OFFICERS OF THE REGISTRANT

The executive officers of the Company are as follows:



Name Age Position
---- --- --------

Howard B. Witt 62 Chairman, President and Chief Executive Officer

Kenneth R. Audino 59 Vice President, Organizational Development
and Total Quality Management

Philip G. Franklin 51 Vice President, Treasurer and Chief Financial
Officer

Mary S. Muchoney 57 Secretary


Officers of Littelfuse are elected by the Board of Directors and serve at the
discretion of the Board.

Howard B. Witt was elected as the Chairman of the Board of the Company in May,
1993. He was promoted to President and Chief Executive Officer of the Company in
February, 1990. Prior to his appointment as President and Chief Executive
Officer, Mr. Witt served in several other key management positions since joining
the Company as Operations Manager in 1979. Mr. Witt serves as a Director of
Franklin Electric Co., Inc. and is a member of the Electronic Industries
Alliance Board of Governors. He also serves as a director of the Artisan Mutual
Fund.

Kenneth R. Audino, Vice President, Organizational Development and Total Quality
Management, is responsible for the Company's overall quality, reliability and
environmental compliance, quality systems, human resources and training efforts.
Mr. Audino joined Littelfuse as a Control Technician in 1964. From 1964 to 1977,
he progressed through several quality and reliability positions to Manager of
Reliability and Standards. In 1983, he became Managing Director of the European
Headquarters and later was named Corporate Director of Quality Assurance and
Reliability. He was promoted to his current position in 1998.

Philip G. Franklin, Vice President, Treasurer and Chief Financial Officer, has
responsibility for the treasury, investor relations, accounting, information
systems and global supply chain functions of the Company. Mr. Franklin joined
the Company in 1998 from OmniQuip International, a $450 million construction
equipment manufacturer which he helped take public.

Mary S. Muchoney has served as Corporate Secretary since 1991, after joining
Littelfuse in 1977. She is responsible for providing all secretarial and
administrative functions for the President and Littelfuse Board of Directors.
Ms. Muchoney is a member of the American Society of Corporate Secretaries.


11


PART II

ITEM 5. MARKET FOR REGISTRANT'S COMMON EQUITY AND RELATED STOCKHOLDER MATTERS

The information set forth under "Quarterly Stock Prices" on page 34 of the
Annual Report to Stockholders is incorporated herein by reference. As of March
14, 2003, there were 209 holders of record of the Company's Common Stock and
approximately 5,000 beneficial holders of its Common Stock.

Since September 22, 1992, shares of the Common Stock have been traded under the
symbol "LFUS" on The Nasdaq Stock Market.

The Company has not paid any cash dividends in its history. Future dividend
policy will be determined by the Board of Directors based upon their evaluation
of earnings, cash availability and general business prospects. Currently, there
are restrictions on the payment of dividends contained in the Company's credit
agreements which relate to the maintenance of a minimum net worth and certain
financial ratios.

ITEM 6. SELECTED FINANCIAL DATA

The information set forth under "Selected Financial Data - Five Year Summary" on
page 34 of the Annual Report to Stockholders is incorporated herein by
reference.

ITEM 7. MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS
OF OPERATIONS

The information set forth under "Management's Discussion and Analysis of
Financial Condition and Results of Operations" on pages 13 through 17 of the
Annual Report to Stockholders is incorporated herein by reference.

ITEM 7A. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISKS

The information set forth under "Market Risk" on page 16 of the Annual Report to
Stockholders is incorporated herein by reference.

ITEM 8. FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA

The Report of Independent Auditors and the Consolidated Financial Statements and
notes thereto of the Company set forth on pages 17 through 33 of the Annual
Report to Stockholders are incorporated herein by reference.

ITEM 9. CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON ACCOUNTING AND
FINANCIAL DISCLOSURE

None.


12


PART III

ITEM 10. DIRECTORS AND EXECUTIVE OFFICERS OF THE REGISTRANT

The information set forth under "Election of Directors" and "Section 16(a)
Beneficial Ownership Reporting Compliance" in the Proxy Statement is
incorporated herein by reference. Please also refer to the information set forth
under "Executive Officers of the Registrant" in Part I of this Report.

ITEM 11. EXECUTIVE COMPENSATION

The information set forth under "Compensation of Executive Officers" in the
Proxy Statement is incorporated herein by reference, except for the sections
captioned "Reports of the Compensation Committee on Executive Compensation" and
"Company Performance."

ITEM 12. SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT

The information set forth under "Ownership of Littelfuse, Inc. Common Stock" in
the Proxy Statement is incorporated herein by reference.

STOCK PLAN DISCLOSURE

The following table represents the Company's equity compensation plans,
including both stockholder approved plans and non-stockholder approved plans.
The section entitled "Compensation of Directors" in the Company's proxy
statement for the annual meeting of stockholders to be held on May 2, 2003
contains a summary explanation of the Stock Plan for New Directors of
Littelfuse, Inc., which has been adopted without the approval of stockholders
and is incorporated herein by reference.



Number of securities to be Weighted-average exercise Number of securities
issued upon exercise of price of outstanding remaining available for
outstanding options, options, warrants and future issuance under
Plan Category warrants and rights rights equity compensation plans
------------- --------------------------- -------------------------- -------------------------

Equity compensation plans
approved by security holders 1,966,605 $23.73 989,500

Equity compensation plans not
approved by security holders 10,000 $23.48 15,000
--------- ------ ---------
Total 1,976,605 $23.73 1,004,500
========= ====== =========



13


ITEM 13. CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS

The information set forth under "Certain Relationships and Related Transactions"
in the Proxy Statement is incorporated herein by reference.

PART IV

ITEM 14. CONTROLS AND PROCEDURES

The Company maintains disclosure controls and procedures that are designed to
ensure that information required to be disclosed in the Company's Exchange Act
reports is recorded, processed, summarized and reported within the time periods
specified in the Commission's rules and forms, and that such information is
accumulated and communicated to the Company's management including the Chief
Executive Officer and Chief Financial Officer, as appropriate, to allow timely
decisions regarding required disclosure.

Within 90 days prior to the filing of this Annual Report on Form 10-K, the Chief
Executive Officer and Chief Financial Officer of the Company evaluated the
effectiveness of the disclosure controls and procedures of the Company and
concluded that these disclosure controls and procedures are effective to ensure
that material information relating to the Company and its consolidated
subsidiaries has been made known to them by the employees of the Company and its
consolidated subsidiaries during the period preceding the filing of this Report.
There were no significant changes in the Company's internal controls or in other
factors that could significantly affect these controls subsequent to the last
day they were evaluated by the Chief Executive Officer and Chief Financial
Officer of the Company.

ITEM 15. EXHIBITS, FINANCIAL STATEMENT SCHEDULES AND REPORTS ON FORM 8-K

(a) Financial Statements and Schedules

(1) Financial Statements. The following financial statements included in
the Annual Report to Stockholders are incorporated herein by
reference.

(i) Report of Independent Auditors (page 17).

(ii) Consolidated Statements of Financial Condition as of December
28, 2002 and December 29, 2001 (page 18).

(iii) Consolidated Statements of Income for the years ended December
28, 2002, December 29, 2001 and December 30, 2000 (page 19).

(iv) Consolidated Statements of Cash Flows for the years ended
December 28, 2002, December 29, 2001 and December 30, 2000
(page 20).

(v) Consolidated Statements of Shareholders' Equity for the years
ended

14


December 28, 2002, December 29, 2001 and December 30, 2000
(page 21).

(vi) Notes to Consolidated Financial Statements (pages 22-33).

(2) Financial Statement Schedules. The following financial statement
schedule is submitted herewith for the periods indicated therein.

(i) Schedule II-Valuation and Qualifying Accounts and Reserves

All other schedules for which provision is made in the applicable
accounting regulation of the Securities and Exchange Commission are
not required under the related instructions or are inapplicable and,
therefore, have been omitted.

(3) Exhibits

See Exhibit Index on pages 20-22.

(b) Reports on Form 8-K

There were no reports on Form 8-K filed with the SEC during the fourth
quarter of 2002.


15


LITTELFUSE, INC.
SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS AND RESERVES
(IN THOUSANDS)



Additions
Balance at Charged to Balance at
Beginning Costs and Deductions End of
Description Of Year Expenses (A) Year
----------- ------- -------- --- ----

Year ended December 28, 2002

Allowance for losses on
accounts receivable ........... $1,244 $ 373 $ 550 $1,067
====== ========== ========= ======
Reserves for sales discounts
and allowances ................ $6,275 $ -- $ 12 $6,263
====== ========== ========= ======

Year ended December 29, 2001

Allowance for losses on
accounts receivable ........... $1,230 $ 332 $ 318 $1,244
====== ========== ========= ======
Reserves for sales discounts
and allowances ................ $7,948 $ -- $ 1,673 $6,275
====== ========== ========= ======

Year ended December 30, 2000

Allowance for losses on
accounts receivable ........... $1,570 $ 275 $ 615 $1,230
====== ========== ========= ======
Reserves for sales discounts
and allowances ................ $5,551 $ 2,397 $ -- $7,948
====== ========== ========= ======


(A) Write-off of uncollectible accounts, net of recoveries and foreign
currency translation.


16


SIGNATURES

Pursuant to the requirements of Section 13 or 15(d) of the Securities
Exchange Act of 1934, the registrant has duly caused this report to be signed on
its behalf by the undersigned, thereunto duly authorized.

Littelfuse, Inc.


By /s/ Howard B. Witt
--------------------------
Howard B. Witt,
Chairman, President and
Chief Executive Officer

Date: March 21, 2003

Pursuant to the requirements of the Securities Exchange Act of 1934, this
report has been signed below by the following persons on behalf of the
registrant and in the capacities indicated on March 21, 2003.

/s/ Howard B. Witt Chairman of the Board, President
- ---------------------------- and Chief Executive Officer
Howard B. Witt

/s/ John P. Driscoll Director
- ----------------------------
John P. Driscoll

/s/ Anthony Grillo Director
- ----------------------------
Anthony Grillo

/s/ Bruce A. Karsh Director
- ----------------------------
Bruce A. Karsh

/s/ John E. Major Director
- ----------------------------
John E. Major

/s/ Gordon Hunter Director
- ----------------------------
Gordon Hunter

/s/ Ronald L. Schubel Director
- ----------------------------
Ronald L. Schubel

/s/ Philip G. Franklin Vice President, Treasurer
- ---------------------------- and Chief Financial Officer
Philip G. Franklin (Principal Financial Officer)


17


FORM OF SECTION 302 CERTIFICATION

I, Howard B. Witt, certify that:

1. I have reviewed this annual report on Form 10-K of Littelfuse, Inc.;

2. Based on my knowledge, this annual report does not contain any
untrue statement of a material fact or omit to state a material fact
necessary to make the statements made, in light of the circumstances
under which such statements were made, not misleading with respect
to the period covered by this annual report;

3. Based on my knowledge, the financial statements, and other financial
information included in this annual report, fairly present in all
material respects the financial condition, results of operations and
cash flows of the registrant as of, and for, the periods presented
in this annual report;

4. The registrant's other certifying officer and I are responsible for
establishing and maintaining disclosure controls and procedures (as
defined in Exchange Act Rules 13a-14 and 15d-14) for the registrant
and have:

a) Designed such disclosure controls and procedures to ensure
that material information relating to the registrant,
including its consolidated subsidiaries, is made know to us by
others within those entities, particularly during the period
in which this annual report is being prepared;

b) Evaluated the effectiveness of the registrant's disclosure
controls and procedures as of a date within 90 days prior to
the filing date of the annual report (the "Evaluation Date");
and

c) Presented in this annual report our conclusions about the
effectiveness of the disclosure controls and procedures based
on our evaluation as of the Evaluation Date;

5. The registrant's other certifying officer and I have disclosed,
based on our most recent evaluation, to the registrant's auditors
and the audit committee of the registrant's board of directors (or
persons performing the equivalent functions):

a) All significant deficiencies in the design or operation of
internal controls which could adversely affect the
registrant's ability to record, process, summarize and report
financial data and have identified for the registrant's
auditors any material weaknesses in internal controls; and

b) Any fraud, whether or not material, that involves management
or other employees who have a significant role in the
registrant's internal controls; and

6. The registrant's other certifying officer and I have indicated in
this annual report whether there were significant changes in
internal controls or in other factors that could significantly
affect internal controls subsequent to the date of our most recent
evaluation, including any corrective actions with regard to
significant deficiencies and material weaknesses.

Dated: March 21, 2003


/s/ Howard B. Witt
-------------------------
Howard B. Witt
Chairman, President & CEO


18


FORM OF SECTION 302 CERTIFICATION

I, Philip Franklin, certify that:

5. I have reviewed this annual report on Form 10-K of Littelfuse, Inc.;

6. Based on my knowledge, this annual report does not contain any
untrue statement of a material fact or omit to state a material fact
necessary to make the statements made, in light of the circumstances
under which such statements were made, not misleading with respect
to the period covered by this annual report;

7. Based on my knowledge, the financial statements, and other financial
information included in this annual report, fairly present in all
material respects the financial condition, results of operations and
cash flows of the registrant as of, and for, the periods presented
in this annual report;

8. The registrant's other certifying officer and I are responsible for
establishing and maintaining disclosure controls and procedures (as
defined in Exchange Act Rules 13a-14 and 15d-14) for the registrant
and have:

a) Designed such disclosure controls and procedures to ensure
that material information relating to the registrant,
including its consolidated subsidiaries, is made know to us by
others within those entities, particularly during the period
in which this annual report is being prepared;

b) Evaluated the effectiveness of the registrant's disclosure
controls and procedures as of a date within 90 days prior to
the filing date of the annual report (the "Evaluation Date");
and

c) Presented in this annual report our conclusions about the
effectiveness of the disclosure controls and procedures based
on our evaluation as of the Evaluation Date;

6. The registrant's other certifying officer and I have disclosed,
based on our most recent evaluation, to the registrant's auditors
and the audit committee of the registrant's board of directors (or
persons performing the equivalent functions):

a) All significant deficiencies in the design or operation of
internal controls which could adversely affect the
registrant's ability to record, process, summarize and report
financial data and have identified for the registrant's
auditors any material weaknesses in internal controls; and

b) Any fraud, whether or not material, that involves management
or other employees who have a significant role in the
registrant's internal controls; and

7. The registrant's other certifying officer and I have indicated in
this annual report whether there were significant changes in
internal controls or in other factors that could significantly
affect internal controls subsequent to the date of our most recent
evaluation, including any corrective actions with regard to
significant deficiencies and material weaknesses.

Dated: March 21, 2003


/s/ Philip Franklin
-------------------------------
Philip Franklin
Vice President, Treasurer & CFO


19


LITTELFUSE INC.
INDEX TO EXHIBITS



Number Description of Exhibit
- ------ ----------------------

2.1 Plan of Reorganization under Chapter 11 of the Bankruptcy Code
of Old Littelfuse (filed as exhibit 2.1 to the Company's Form
10 effective September 16, 1992 (1934 Act File No. 0-20388)
and incorporated herein by reference).

3.1 Certificate of Incorporation, as amended to date (filed as 3.1
to the Company's Form 10K for the fiscal year ended January 3,
1998 (1934 Act File No. 0-20388) and incorporated herein by
reference).

3.1A Certificate of Designations of Series A Preferred Stock (filed
as Exhibit 4.2 to the Company's Current Report on Form 8-K
dated December 1, 1995 (1934 Act File No. 0-20388) and
incorporated herein by reference).

3.2 Bylaws, as amended to date (filed as exhibit 2.1 to the
Company's Form 10-Q for the quarterly period ended June 29,
2002 (1934 Act File No. 0-20388) and incorporated herein by
reference).

4.1 Second amended restated bank credit agreement among
Littelfuse, Inc., as borrower, the lenders named therein and
the First National Bank of Chicago, as agent, dated as of
September 1, 1998 (filed as exhibit 4.1 to the Company's Form
10K for the fiscal year ended January 2, 1999 (1934 Act File
No. 0-20388) and incorporated herein by reference).

4.3 Stock Plan for Employees and Directors of Littelfuse, Inc., as
amended (filed as exhibit 4.3 to the Company's Form 10-Q for
the quarterly period ended March 30, 2002 (1934 Act File No.
0-20388) and incorporated herein by reference).

4.4 Littelfuse, Inc. Retirement Plan dated January 1, 1992, as
amended and restated (filed as exhibit 4.4 to the Company's
Form 10-K for the fiscal year ended December 29, 2001 (1934
Act File No. 0-20388) and incorporated herein by reference).

4.5 First amendment to the Littelfuse, Inc. Retirement Plan

4.6 Littelfuse, Inc. 401(k) Savings Plan (filed as exhibit 4.8 to
the Company's Form 10-K for the fiscal year ended December 31,
1992 (1934 Act File No. 0-20388) and incorporated herein by
reference).



20




Number Description of Exhibit
- ------ ----------------------

4.7 Littelfuse Rights Plan Agreement, dated as of December 15,
1995, between Littelfuse, Inc. and LaSalle National Bank, as
Rights Agent, together with Exhibits thereto, as amended
(filed as exhibit 4.10 to the Company's Form 10-Q for the
quarterly period ended October 3, 1998 (1934 Act File No.
0-20388) and incorporated herein by reference).

4.8 Note Purchase Agreement dated as of September 1, 1998,
relating to $60,000,000 principal amount of Littelfuse, Inc.
6.16% Senior Notes due September 1, 2005. (filed as exhibit
4.11 to the Company's Form 10-K for the fiscal year ended
January 2, 1999 (1934 Act File No. 0-20388) and incorporated
herein by reference).

10.3 Patent License Agreement, dated as of July 28, 1995, between
Littelfuse, Inc. and Pacific Engineering Company, Ltd.(filed
as exhibit 10.3 to the Company's Form 10-K for the fiscal year
ended December 28, 1996 (1934 Act File No. 0-20388) and
incorporated herein by reference).

10.4 MINI(R)and MAXI(TM) License Agreement, dated as of June 21,
1989, between Littelfuse, Inc. and Cooper Industries, Inc.
(filed as exhibit 4.6 to the Company's Form 10 effective
September 16, 1992 (1934 Act File No. 0-20388) and
incorporated herein by reference).

10.5 Patent License Agreement, dated as of January 1, 1987, between
Littelfuse, Inc. and Cooper Industries, Inc. (filed as exhibit
4.6 to the Company's Form 10 effective September 16, 1992
(1934 Act File No. 0-20388) and incorporated herein by
reference).

10.6 1993 Stock Plan for Employees and Directors of Littelfuse,
Inc., as amended (filed as exhibit 10.1 to the Company's Form
10-Q for the quarterly period ended June 29, 2002 (1934 Act
File No. 0-20388) and incorporated herein by reference).

10.7 Littelfuse, Inc. Supplemental Executive Retirement Plan (filed
as exhibit 10.10 to the Company's Form 10-K for the year ended
December 31, 1993 (1934 Act File No. 0-20388) and incorporated
herein by reference).

10.8 Littelfuse Deferred Compensation Plan for Non-employee
Directors, as amended (filed as exhibit 10.8 to the Company's
Form 10-K for the fiscal year ended January 2, 1999 (1934 Act
File No. 0-20388) and incorporated herein by reference).

10.9 Littelfuse Executive Loan Program (filed as Exhibit 10.2 to
the Company's Form 10-Q for the quarterly period ended June
30, 1995 (1934 Act File No. 0-20388) and incorporated herein
by reference).



21




Number Description of Exhibit
- ------ ----------------------

10.10 Employment Agreement dated as of November 2, 2001 between
Littelfuse, Inc. and Howard B. Witt (filed as exhibit 10.10 to
the Company's Form 10-K for the fiscal year ended December 29,
2001 (1934 Act File No. 0-20388) and incorporated herein by
reference).

10.11 Change of Control Employment Agreement dated as of November 2,
2001 between Littelfuse, Inc. and Howard B. Witt (filed as
exhibit 10.11 to the Company's Form 10-K for the fiscal year
ended December 29, 2001 (1934 Act File No. 0-20388) and
incorporated herein by reference).

10.12 Form of change of Control Employment Agreement dated as of
September 1, 2001 between Littelfuse, Inc. and Mr. Franklin
and Ms. Muchoney (filed as exhibit 10.12 to the Company's Form
10-Q for the quarterly period ended September 29, 2001 (1934
Act File No. 0-20388) and incorporated herein by reference).

10.13 Form of change of Control Employment Agreement dated as of
September 1, 2001 between Littelfuse, Inc. and Mr. Kenneth
Audino (filed as exhibit 10.13 to the Company's Form 10-Q for
the quarterly period ended September 29, 2001 (1934 Act File
No. 0-20388) and incorporated herein by reference).

10.14 Stock Plan for New Directors of Littelfuse, Inc. (filed as
exhibit 10.1 to the Company's Form 10-Q for the quarterly
period ended September 28, 2002 (1934 Act File No. 0-20388)
and incorporated herein by reference).

13.1 Portions of Littelfuse Annual Report to Stockholders for the
fiscal year ended December 28, 2002.

22.1 Subsidiaries.

23.1 Consent of Independent Auditors.

99.1 Certification Pursuant to Section 906 of the Sarbanes-Oxley
Act of 2002, 18 U.S.C. Section 1350.



22