enter image description hereThis is the image of the component and I couldn't find any info on the web with the

This is the image of the component and I couldn't find any info on the web with these numbers.

enter image description here

  • \$\begingroup\$ What does the circuit it's in do? Can you show us a picture of the components surrounding it (preferably the whole PCB) as well as the backside? \$\endgroup\$
    – vir
    Commented Sep 30, 2023 at 8:21
  • \$\begingroup\$ Zoomed in like that, it's rather impossible to determine even an enlightened guess what it might do in a circuit. It could be a 4-pin rectifier, 4-pin CM choke or transformer, or the 4 pins are really just two terminals of a 2 terminal component like an inductor. What is surrounding this component and is it near power entry or power supply sections or somewhere else? \$\endgroup\$
    – Justme
    Commented Sep 30, 2023 at 8:39
  • 1
    \$\begingroup\$ OK, given the second picture, they havea designator of T and are part of some power supply board, they might be transformers rather than inductors or CM chokes, if that helps. \$\endgroup\$
    – Justme
    Commented Sep 30, 2023 at 8:41
  • \$\begingroup\$ @vir I took another photo of surroundings I can't send the whole PCB and that black heatsink has 4 transistor behind and I took photo from that too \$\endgroup\$
    – Angelina
    Commented Sep 30, 2023 at 8:45
  • \$\begingroup\$ In that case they might be pulse transformers for isolating the drive circuit from the transistors. You need to provide the schematis or reverse engineer them to narrow down what these are. \$\endgroup\$
    – Justme
    Commented Sep 30, 2023 at 9:29

1 Answer 1


I would guess they are gate drive transformers. Vishay do a range of such magnetics, and whilst I can't find an exact match, it seems a plausible fit with the other surrounding components, and the T designator.


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