EXHIBIT 32.2 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 Bel Fuse Inc. (the "Company") on Form 10-K for the year ended December 31, 2003 filed with the Securities and Exchange Commission (the "Report"), I, Colin Dunn, Vice President of Finance 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) of the Securities Exchange Act of 1934; and (2) The information contained in the Report fairly presents, in all material respects, the consolidated financial condition of the Company as of the dates presented and consolidated result of operations of the Company for the periods presented. Dated: March 12, 2004 BY: /s/ Colin Dunn ----------------------------- Colin Dunn, Vice President of Finance