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General => General Technical Chat => Topic started by: charliedelta on June 14, 2021, 09:47:56 am

Title: Mystery Part TO92 marked 2T011
Post by: charliedelta on June 14, 2021, 09:47:56 am
Trying to find out what the specification are of this part marked 2T011 or maybe 2to11.
Its in a TO-92 package.

I did search everywhere, no hits?

Anyone have any clues. It's in a USA manufactured Ultrasonic leak detector.
Lots of 2n2926's on the board marked in Yellow and Green so its very early vintage.

Thanks
Title: Re: Mystery Part TO92 marked 2T011
Post by: exe on June 14, 2021, 10:04:59 am
Do you have a picture of the board and picture of the part?
Title: Re: Mystery Part TO92 marked 2T011
Post by: charliedelta on June 16, 2021, 08:35:36 am
Yes I do see attached. The device behind it is the same one with the same markings.
Title: Re: Mystery Part TO92 marked 2T011
Post by: exe on June 16, 2021, 12:54:57 pm
I'd desolder one of these and put into a transistor tester. This at least will give some info.

My best guess it's a pnp bjt, but not sure which one.
Title: Re: Mystery Part TO92 marked 2T011
Post by: charliedelta on July 03, 2021, 09:43:31 am
I pulled the part.

BJT PNP Hfe 215, Ube 693 and Ic 6.2MA on the chinese transistor analyzer.

A BC557 might be a close match, but I have not looked for match exhaustively.