help wanted: Unknown component in TO-3 part no. "P592"

Discussion in 'The Projects Forum' started by ziouranio, Apr 12, 2010.

  1. ziouranio

    Thread Starter Member

    Jul 23, 2009
    Dear all,
    I am trying to fix an older UPS equipment where the original manufacturer deleted the part numbers on some components.
    The one I am dealing with are TO-3 power transistors, probably MOSFET or BJT manufactured by SGS-Thompson (now ST-microelectronics). The only signs I can read are "P592" ... does anyone have any suggestion?
  2. hgmjr

    Retired Moderator

    Jan 28, 2005
    Take a close-up in-focus picture of the top of the device and post it here.

    Our members may be able to spot something subtle that will help identify the part for you.