2 Replies Latest reply on Mar 15, 2020 5:43 PM by three-phase

    Insulation Tester Component Identification

    three-phase

      Hello All,

       

      I have a component in the CA6526 insulation tester that I am trying to identify. It looks like it is switching the HV transformer, but it is a 4 legged device that I am not used to. Generally I see an IGBT or MOSFET performing this function. Three of the pins are shorted together, so it could be that it still is a type of switching transistor, but all the searches I have done, have drawn a blank at the moment.

       

      The text on the component is;

       

      39100

      PEm

      1722 D4

      4205

       

      This is the actual component

       

      Device close up

       

      This is where the component sits on the PCB;

       

      Component position

       

      A different angle with the focus on the other components;

       

      Component position

       

      Could anybody assist with identification of the component and then hopefully I can find a data sheet?

       

      Kind regards