EXHIBIT 99.1

                CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350
                      AS ADOPTED PURSUANT TO SECTION 906 OF
                         THE SARBANES-OXLEY ACT OF 2002

         In connection with the Annual Report of Intersil Corporation (the
"Company") on Form 10-K for the period ending January 3, 2003, as filed with the
Securities and Exchange Commission on the date hereof (the "Report"), I, Richard
M. Beyer, Chief Executive Officer of the Company, certify, pursuant to 18 U.S.C.
Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of
2002, that:

         (1)  The Report fully complies with the requirements of Section 13(a)
              or 15(d) of the Securities Exchange Act of 1934; and

         (2)  The information contained in the Report fairly presents, in all
              material respects, the financial position and results of
              operations of the Company.

/s/  Richard M. Beyer
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Richard M. Beyer
Chief Executive Officer

March 26, 2003