<TABLE> <S> <C>

<PAGE>
 
<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
CONDENSED STATEMENT OF OPERATIONS, THE CONDENSED BALANCE SHEET AND THE
ACCOMPANYING NOTES TO THE CONDENSED FINANCIAL STATEMENTS, AND IS QUALIFIED IN
ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
       
<S>                             <C>                     <C>
<PERIOD-TYPE>                   3-MOS                   3-MOS
<FISCAL-YEAR-END>                          DEC-31-1999             DEC-31-1998
<PERIOD-START>                             JAN-01-1999             JAN-01-1998
<PERIOD-END>                               MAR-31-1999             MAR-31-1998
<CASH>                                           5,955                   4,867
<SECURITIES>                                         0                       0
<RECEIVABLES>                                   62,555                  46,455
<ALLOWANCES>                                         0                       0
<INVENTORY>                                     59,621                  52,779
<CURRENT-ASSETS>                               147,035                 119,249
<PP&E>                                          31,947                  18,508
<DEPRECIATION>                                       0                       0
<TOTAL-ASSETS>                                 218,131                 169,354
<CURRENT-LIABILITIES>                                0                  58,045
<BONDS>                                              0                       0
<PREFERRED-MANDATORY>                                0                       0
<PREFERRED>                                          0                       0
<COMMON>                                            32                      29
<OTHER-SE>                                     119,817                 100,111
<TOTAL-LIABILITY-AND-EQUITY>                   218,131                 169,354
<SALES>                                         51,256                  45,704
<TOTAL-REVENUES>                                51,256                  45,704
<CGS>                                           27,909                  25,779
<TOTAL-COSTS>                                   27,909                  25,779
<OTHER-EXPENSES>                                29,300                  20,325
<LOSS-PROVISION>                                     0                       0
<INTEREST-EXPENSE>                               1,321                     674
<INCOME-PRETAX>                                (9,001)                 (1,371)
<INCOME-TAX>                                   (3,510)                   (528)
<INCOME-CONTINUING>                            (5,491)                   (843)
<DISCONTINUED>                                       0                       0
<EXTRAORDINARY>                                      0                       0
<CHANGES>                                            0                       0
<NET-INCOME>                                   (5,491)                   (843)
<EPS-PRIMARY>                                   (0.43)                  (0.07)
<EPS-DILUTED>                                   (0.43)                  (0.07)
        

</TABLE>