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65blkbkgt 18th June 2007 01:05 AM

Looking For Output Transistors For Vintage Car Radio
2 Attachment(s)
Hi again,

I'm searching for some output transistors pictured below for a few old Philco car radios. Can anyone steer me in the right direction where I can purchase these or similar that would be compatible?
The numbers on the face are:

6522 1012

I told you I was new :)

Much thanks!

poynton 18th June 2007 03:08 AM


The number is almost certainly an in-house number. I have not seen it before.

Is this transistor the same size as the other one you were asking about?

Is the radio +ve ground?

If the answer is yes to both, then OC35 / OC28 or USA equivalents will work.


65blkbkgt 18th June 2007 03:18 AM

Hi Andy, Both are from different radio manufacturers but both were used in the same car and both are negative ground. Is this why I'm not able to find the correct ones? Hmmmm. Would the same outputs be the same for both?:confused:

poynton 18th June 2007 08:26 AM


I meant negative ground.

Most of the output transistors from '60s radios were more or less the same ie PNP Germanium.

I had a box of OC35 and OC28 which I had no problems with when I had to use them as replacements.


65blkbkgt 18th June 2007 12:01 PM

That's great info.. I'm going to check Ebay and the internet to search for those. Maybe I'll come across someone selling a "lot" of them. :)

dangus 18th June 2007 08:35 PM

There is (or was) a company that reproduced vintage Germanium power transistors. I used them to repair a 1960's vintage power inverter once. The name just crawled out of the recesses of my brain "Germanium Power Devices". It looks like they've been eaten by IR, and only do photodetectors now: But if you're desperate it couldn't hurt to ask them.

65blkbkgt 18th June 2007 10:01 PM

Thanks Dangus I'll try them. I found some compatibles on Ebay (GE-3) but the seller only has 2 of 'em. I'm sure I can find them around from time to time. I'll just have to keep checking and in the meantime try the link you sent me.

I appreciate it!

65blkbkgt 19th June 2007 05:49 PM

$25 for an output transistor? GULP! I was quoted that price for an OC28 compatible. :confused:

poynton 19th June 2007 08:34 PM


They are not that expensive from the UK.

If I was at home, I could send you some but unfortunately, I am going to be stuck here in NZ for some weeks.


65blkbkgt 19th June 2007 08:35 PM

Hey 'bout if we hook up when you get home and in the meantime I'll look for a few. I can always use some. :)

Are the ones like in the link you sent me compatible with the ones mentioned above?

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