Help ID'ing transistor trash or treasure.

[skiraly017]

I bought out an electronics parts inventory that included some trannies I've never heard of. I checked Drangofly's substitution chart but didn't come up with anything. I have listed all identifying marks in hopes that someone could shed some light on these and whether or not they're useable for pedals. Thanks.

NTE 199
NTE 172A
GE 212
GE62
MPS 6560
59-1511 / RAY 6648
400909
F325099 105
FSE7056
2N4402
GE 2N5232
MPSA06 7409
A490 601
SD 16P1

[Ardric]

Here's some guesses based on a few minutes of googling.

NTE 199

http://www.nteinc.com/specs/100to199/pdf/nte199.pdf
A high gain silicon NPN, should work like a 2n5089.

NTE 172A

http://www.nteinc.com/specs/100to199/pdf/nte172a.pdf
Silicon NPN Darlington.  Maybe a sub for MPSA13 or MPSA14.

GE 212

Could that be a 2n212, a germanium NPN?  Could be a nice score for vintage pedal building if it is.

2N4402

http://www.fairchildsemi.com/ds/2N/2N4402.pdf
Silicon PNP.  Maybe a sub for 2n3906, but lower gain.

GE 2N5232

http://www.ortodoxism.ro/datasheets/MicroElectronics/mXtuvwx.pdf
Silicon NPN, general purpose, like a 2n3904.

MPSA06 7409

http://www.fairchildsemi.com/ds/MP/MPSA06.pdf
Silicon NPN, lower gain but beefy.  Probably made in March, 1974.

A490 601

http://www.datasheetarchive.com/datasheet.php?article=3691197
Could that be a 2SA490, a low gain high power silicon PNP in a TO-220 package?

Anyways, hope that helps.

[skiraly017]

It does help. Thanks.

[markm]

I wouldn't mind a couple finds like those! 

[Ge_Whiz]

Oh, I've got a coupla dozen MPSA06s and MPSA56s (complementary PNP). They are low gain and both make great distortion pedal transistors - I last used them in my Harmonic Jerkulator.