transistor help

[rayzcam1]

Need help to identify this transistor 176 051  TO-92 body  It's a npn

[Ugur]

Can you share a picture of this transistor?

[rayzcam1]

yes

[Ugur]

What device is this part used in? Are you sure it's an NPN transistor? My first thought is that it might be a J176 JFET.

[Emo]

Hi,

there does exist a 2sc176, a NPN Ge transistor with max 15V and Ft 10 Mhz.
Measuring the diode voltage over the B-E junction will show if it is indeed Ge(0,3V versus 0,6V Si)

[Grandchuck]

TO-92 germanium transistors are rare.

[rayzcam1]

It's in a BK 1640 power supply

[PGPG]

You have schematic without part list?
Having schematic you should be able to select transistor to be used there.

[mikerj]

This part drives the base of the main pass transistor which is a 2N6383 NPN darlington.  I have no idea what that exact part is, but there are numerous jellybean parts that would work fine in this position, e.g. 2N3904.

[rayzcam1]

Thank you!

[mikerj]

Check pin outs carefully, they may not match the original so you may need to bend the pins and/or rotate the new device to shift the pins into the correct places.