<ARTICLE> 5
<LEGEND>
Microsemi Corporation and Subsidiaries Unaudited Financial Data Schedule For The
Three Months Ended January 3, 1999 (in thousands, except earnings per share)
</LEGEND>
<MULTIPLIER> 1,000
       
                             
<PERIOD-TYPE>                   3-MOS
<FISCAL-YEAR-END>                           OCT-3-1999
<PERIOD-START>                             SEP-28-1998
<PERIOD-END>                                JAN-3-1999
<CASH>                                           7,364
<SECURITIES>                                         0
<RECEIVABLES>                                   23,342
<ALLOWANCES>                                     2,020
<INVENTORY>                                     56,045
<CURRENT-ASSETS>                                92,435
<PP&E>                                          78,696
<DEPRECIATION>                                  43,574
<TOTAL-ASSETS>                                 143,993
<CURRENT-LIABILITIES>                           37,758
<BONDS>                                         17,778
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                         2,265
<OTHER-SE>                                      84,256
<TOTAL-LIABILITY-AND-EQUITY>                   143,993
<SALES>                                         39,417
<TOTAL-REVENUES>                                39,417
<CGS>                                           28,904
<TOTAL-COSTS>                                   28,904
<OTHER-EXPENSES>                                   116
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                 552
<INCOME-PRETAX>                                  3,677
<INCOME-TAX>                                     1,397
<INCOME-CONTINUING>                              2,280
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                     2,280
<EPS-PRIMARY>                                      .20
<EPS-DILUTED>                                      .20