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old RCA transistors- what are they? - Click HERE for Original Thread
needtubes
I recently stumbled upon these transistors... and have no clue what they are. They are all round case styles (TO-3 I suppose they would be). I have the following:

2x 38737 (small, on 1.25"x0.875"x0.5" heatsink)
2x 38736 (small, on 1.25"x0.875"x0.5" heatsink)
1x 38735 (small, not on heatsink)
4x 36892 (large, TO-3)
2x 2N4249 (small, old transistor package, not new silicon)
1x 2N3638 (medium, old package)
1x F2N3567 (medium, old package)
1x 61088 (metal can, only two leads) (no idea what it is)

Does anyone know what any of them are? Are they at all useful? Worth trying in any kind of amp? Anyone want them?

Thanks
Sch3mat1c
Medium-sized TO-3 is a TO-66, don't remember the small one (basically a TO-5 ("large" (for small signals that is) metal can) on a heatsink mounting tab). Don't see many these days!

I don't have any info on your transistors but I'd like to add some of my own: TO-3, #36212 and a pair of TO-5's press-fitted into small heatsinks: 40409 and 40410.

For the 2N (and any A/B/C/D, aka 2Sxxxx types) I'd suggest the usual: Dial Electronics, EleNota and Japanese Transistor Data.

Tim
sayang001
40410

PNP
Vcb 80V
Vce 90V
Ptot 3W
Ic max. 0.5A
Hfe min. 50 max. 250
amb
The 40409 is the NPN complement of the 40410.

2N4249:
PNP Si Vcb 60V Vce 60V Veb 5V Ic ? Pd 0.2W Ft 40MHz hfe 280

2N3638:
PNP Si Vcb 25V Vce 25V Veb 4V Ic 0.5A Pd 0.3W Ft 100MHz hfe 67

I assume F2N3567 = 2N3567:
NPN Si Vcb 80V Vce 40V Veb 5V Ic 0.5A Pd 0.3W Ft 60MHz hfe 70

I don't have info about the 61088.

HTH.

-Ti
Sch3mat1c
Thanks!
funkengrooven
Hey!!

needtubes.

Do you still have those transistors from 3 years ago????
As luck would have it I am working on a guitar amp and you have EXACTLY :D The transistors that I need... SHAZAAM!!!
The list you have there is the complement that goes in a Kustom power amp circuit board 5065. Every one and the right quantities too...it is like a stock list for that power amp!
Are they all good???

Man, oh, Man, I'm excited!!!
:bigeyes:

BTW, I am new on this forum as a poster but you guys always seem to have just the right information when I need it...So I joined up!!
Thanks!!!

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