<ARTICLE> 5
       
                             
<PERIOD-TYPE>                   3-MOS
<FISCAL-YEAR-END>                          MAR-31-1999
<PERIOD-END>                               DEC-31-1998
<CASH>                                       $     389
<SECURITIES>                                 $   3,659
<RECEIVABLES>                                $   4,851
<ALLOWANCES>                                 $    (297)
<INVENTORY>                                  $   8,090
<CURRENT-ASSETS>                             $  17,346<F1>
<PP&E>                                       $  26,745
<DEPRECIATION>                               $ (14,716)
<TOTAL-ASSETS>                               $  33,106<F2>
<CURRENT-LIABILITIES>                        $   5,587
<BONDS>                                      $       0
<PREFERRED-MANDATORY>                        $       0
<PREFERRED>                                  $       0
<COMMON>                                     $  53,259
<OTHER-SE>                                   $ (33,617)
<TOTAL-LIABILITY-AND-EQUITY>                 $  33,106
<SALES>                                      $   8,529
<TOTAL-REVENUES>                             $   8,529
<CGS>                                        $   6,072
<TOTAL-COSTS>                                $   6,072
<OTHER-EXPENSES>                             $   2,877<F3>
<LOSS-PROVISION>                             $       0
<INTEREST-EXPENSE>                           $     206
<INCOME-PRETAX>                              $    (626)
<INCOME-TAX>                                 $       0
<INCOME-CONTINUING>                          $       0
<DISCONTINUED>                               $       0
<EXTRAORDINARY>                              $       0
<CHANGES>                                    $       0
<NET-INCOME>                                 $    (626)
<EPS-PRIMARY>                                $   (0.08)
<EPS-DILUTED>                                $   (0.08)
<FN>
<F1>Includes - Other assets $654K.
<F2>Includes - Restricted cash $3,260K; Other long term assets $471K.
<F3>Includes - Research and development $1,004K; Selling, marketing and
  administrative $1,889; Interest (income) $(59K); and Other
  income (expense) $43K.
</FN>