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
This is where the component sits on the PCB;
A different angle with the focus on the other components;
Could anybody assist with identification of the component and then hopefully I can find a data sheet?
Kind regards
