<ARTICLE>                  5
<LEGEND>
     THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM BEL
     FUSE INC. AND SUBSIDIARIES FINANCIAL STATEMENTS AT SEPTEMBER 30, 1998 AND
     THE NINE MONTHS THEN ENDED AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO
     SUCH FINANCIAL STATEMENTS.
</LEGEND>
<MULTIPLIER>      1

       
                                  
<PERIOD-TYPE>                        3-MOS
<FISCAL-YEAR-END>                                 DEC-31-1998
<PERIOD-END>                                      SEP-30-1998
<CASH>                                             41,108,173
<SECURITIES>                                        1,830,183
<RECEIVABLES>                                      13,287,441
<ALLOWANCES>                                          238,000
<INVENTORY>                                         9,610,761
<CURRENT-ASSETS>                                   66,492,284
<PP&E>                                             57,240,769
<DEPRECIATION>                                     27,713,746
<TOTAL-ASSETS>                                     96,550,982
<CURRENT-LIABILITIES>                              12,076,485
<BONDS>                                                     0
<COMMON>                                              520,249
<PREFERRED-MANDATORY>                                       0
<PREFERRED>                                                 0
<OTHER-SE>                                         82,930,248
<TOTAL-LIABILITY-AND-EQUITY>                       96,550,982
<SALES>                                            60,195,036
<TOTAL-REVENUES>                                   60,195,036
<CGS>                                              39,616,162
<TOTAL-COSTS>                                      50,502,655
<OTHER-EXPENSES>                                            0
<LOSS-PROVISION>                                            0
<INTEREST-EXPENSE>                                          0
<INCOME-PRETAX>                                    11,133,954
<INCOME-TAX>                                        1,477,000
<INCOME-CONTINUING>                                 9,656,954
<DISCONTINUED>                                              0
<EXTRAORDINARY>                                             0
<CHANGES>                                                   0
<NET-INCOME>                                        9,656,954
<EPS-PRIMARY>                                            1.87
<EPS-DILUTED>                                            1.85