Any idea what these transistors are?

[chromesphere]

Hi guys,

I have an oportunity to pick up a bunch of these transistors.  Aparently they are old but dont know how old...I cant seem to find any datasheets on them, so i have no idea if they are suitable for stompboxes.

Heard of any of these part numbers before?

549265 9_2
GE408
GE413

The GE408/413's have the 'GE" (general electric) logo stamped on the top of them.

I dont know what they are, silicon, germanium, small signal, power, no idea...could be something totally obscure, just thought i would ask around and see if htey are any good.
Thanks for your help!
Paul

[Mike Burgundy]

Try replacing the GE with common transistor type designators like BC or 2N. the 413 might be PNP Ge.

[zombiwoof]

The first one possibly could be a BC549 with the rest of the numbers being a date code.
For the GE transistors, I believe they used their own numbering system, and you have to get hold of a copy of a GE Transistor Handbook to get the specs.

This is just my feeling about them.

Good Luck,
Al

[joegagan]

ditto what al said. lots of trans out there had unique part numbers.

if you ever see a ge made by RCA that says 'B22', that is probably a killer transistor. i only found one, but it was a beautiful sounding germ.

[Pyr0]

The GE one might be by General Electric using just the last few numbers - maybe GE408 is their version of 2n408.
Here's a copy of their 1964 transistor guide, but I don't see any mention of GE numbers.
btw, there's lots of great transistor theory in this doc - almost 400 pages.

http://www.introni.it/pdf/GE%20-%20Transistor%20Manual%201964.pdf

[wavley]

The first one possibly could be a BC549 with the rest of the numbers being a date code.
For the GE transistors, I believe they used their own numbering system, and you have to get hold of a copy of a GE Transistor Handbook to get the specs.

This is just my feeling about them.

Good Luck,
Al

I've found this to be true of old Tektronix equipment, I pulled a lot of great stuff out of a basket case 547 scope that came from Nasa (now it's a gutted coffee table in my studio missing it's transistors and Amperex Bugle Boy and Telefunken tubes) but it took forever to find the Tek replacement guide so could cross reference proprietary part numbers.

[chromesphere]

Hmmm, thats interesting.  Alright well i might see if he'll sell them cheap to me, incase their not suitable.  Thanks for the help, i'll have to remember that (ge can sometimes be 2n or bc).
Cheers!
Paul