[sdiy] Mystery transistor--help!

[Bob Weigel]

It definitely would be a morotorola number.  Actually I have stock of 
several from the MPS-Uxx series.  25 is not only one I don't have...it's 
not even listed in the master motorola guide from 5 years ago at least.  
Sure you are reading that right?  Also..the MPS-Uxx ones I have AND that 
are listed all come in a small power tab case; designed for power 
applications like driver transistors in low power amplifiers and that 
sort of thing..   -Bob

Harry Bissell Jr wrote:

>MPS prefix sounds like Motorola Products Semiconductor
>but a typical number might be like MPSA25...
>
>H^) harry
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>--- peff 2cv <peff2cv at hotmail.com> wrote:
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>>Hi
>>
>>Perhaps one of you could help me identify this
>>transistor. It is really hard 
>>to read so I tried my best to get the correct info
>>off of it. NTE and web 
>>searches have turned up nil (MPS made me think
>>Motorola)..
>>
>>Here's what is printed on the part:
>>
>>MPSU
>>25@       <- the @ is actually a circle with a
>>little triangle inside. 5 may 
>>be the letter "S"
>>M806
>>
>>It is TO-92 and in the circuit is mated to a NP3565
>>(2N2222/NTE 123A) NPN so 
>>it looks to be a compliment to this, perhaps similar
>>to a 2N2907???
>>
>>thanks
>>
>>Peff
>>
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