Exhibit 23.1
Consent of Independent Registered Public Accounting Firm
We hereby consent to the incorporation by reference in the Registration Statement on Form S-3 (No. 033-62561) and the Registration Statements on Form S-8 (Nos. 333-82556, 333-35526, 333-24045, 033-63395, 033-16711, 333-129283, 333-135678 and 333-140071) of Microsemi Corporation of our report dated February 7, 2006 relating to the consolidated financial statements of PowerDsine, Ltd. which appears in this Current Report on Form 8-K/A of Microsemi Corporation dated March 23, 2007.
March 22, 2007
/s/ Kesselman & Kesselman
Kesselman & Kesselman CPA (Isr.)
Certified Public Accountants
A member of PricewaterhouseCoopers International Limited
Tel Aviv, Israel