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It is always difficult to lookup a part based on the markings on the package. First looking at the package and PCB traces, this looks like a MOSFET device. Using the markings, I found a close match that might make sense.(https://assets.nexperia.com/documents/data-sheet/PSMN039-100YS.pdf ). No guarantees, but this might be close.
Many thanks Gene,
Awesome piece of detective work. Googling the PSMN039-100 part number does bring up pictures of a device with very similar markings to the one on the board. The device ratings seem similar to other MOSFETs I have seen in these circuits and the pin configuration seems to match the circuit as well.
It is the best option I have at the moment.
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;
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?