Exhibit 3.1

AMENDED AND RESTATED

CERTIFICATE OF INCORPORATION

OF

INTERSIL CORPORATION

FIRST. The name of the corporation is Intersil Corporation (the “Corporation”).

SECOND. The address of the Corporation’s registered office in the State of Delaware is 1209 Orange Street, in the City of Wilmington, County of New Castle, Delaware 19801. The name of the Corporation’s registered agent at such address is The Corporation Trust Company.

THIRD. The purpose of the Corporation is to engage in any lawful act or activity for which corporations may be organized under the General Corporation Law of Delaware (the “DGCL”) and to possess and exercise all of the powers and privileges granted by such law and any other law of Delaware.

FOURTH. The total number of shares that the Corporation shall have authority to issue is 1,000 shares of Common Stock, and the par value of each of such share is $0.001.

FIFTH. The board of directors of the Corporation is expressly authorized to adopt, amend or repeal bylaws of the Corporation.

SIXTH. The number of directors of the Corporation shall be as from time to time fixed by, or in the manner provided in, the bylaws of the Corporation.

SEVENTH. The Corporation shall have a perpetual existence.

EIGHTH. The directors of the Corporation shall be entitled to the benefits of all limitations on the liability of directors generally that are now or hereafter become available under the DGCL. Without limiting the generality of the foregoing, to the fullest extent permitted by the DGCL, as it exists on the date hereof or as it may hereafter be amended, no director of the Corporation shall be personally liable to the Corporation or its stockholders for monetary damages for breach of fiduciary duty as a director, except for liability (i) for any breach of the director’s duty of loyalty to the Corporation or its stockholders, (ii) for acts or omissions not in good faith or which involve intentional misconduct or a knowing violation of law, (iii) under Section 174 of the DGCL, or (iv) for any transaction from which the director derived an

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improper personal benefit. Any repeal or modification of this Section 8 or any adoption of any provision of this Certificate of Incorporation inconsistent with this Section 8 shall be prospective only, and shall not affect, to the detriment of any director, any limitation on the personal liability of a director of the Corporation existing at the time of such repeal, modification or adoption.

NINTH. The Corporation reserves the right to amend, alter, change, or repeal any provision contained in this Certificate of Incorporation, in the manner now or hereafter prescribed by statute.

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