I just finished lunch and my research has not yielded too much so far.
I've looked through several GE semiconductor catalogs,,,,,,nothing.
Loose leaf literature in file cabinets full of such stuff,,,,,nothing.
Finally I turned to Newark, Allied, Lafayette, Mouser parts catalogs,
and in the Newark catalog ""dated 1968"" on page 136 in the upper right
corner of the page I found what is evidently the beginning of these G.E.
"general replacement semiconductors". Here is what it says, "Universal
replacement transistors. Highly dependable, replacement low cost
transistors, which are designed as general replacements for most types
of transistors used in radio and hi-fi sets." They started with GE-1 and
end with GE-11 in the table right below that. That is exactly what I
stated earlier, about the GE-XXX numbered items being 'general
replacements for home electronics'. With this in mind I can tell you
that someone has been into this clock radio and done a repair 'before
you'. I worked as a kid in high school as a tech in a repair shop that
handled warranty repairs for Sony, and Sony did NOT originally use GE
general replacement semis, in any of their products, they were ALWAYS
Sony semi's. I also went out in our parts room and found several boxes
full of these GE replacement transistors. The one's I have start at GE-2
and go through GE-316. I also did find a reference to a GE-509 in a
later GE cross reference book. It is therefore entirely possible and
probable that they eventually hit GE-813 and even higher. I don't think
it will be to difficult for you to find something suitable that will
work o.k. If I find more I'll let you know. I just went and grabed my
1998 edition of my 'NTE general replacement catalog'. On page 2-55 it
lists the GE semi's, starting with GE-1 and ending with GE-74196,
HOWEVER, NO GE-813. Any chance you may have misread the part number?
Good luck, Ira.
On 4/28/2015 2:21 PM, David Forbes wrote:
I will see if it's in the old GE transistor book I have, when I get home.
On 4/28/2015 1:47 PM, John Rehwinkel wrote:
Working on an old Zenith battery operated clock radio (60's) The
radio I fixed..the clock..not so much. It's a simple thing, just a
transistor, center tapped coil and a cap. I need to try the
transistor It's marked GE-813 and I can't find it listed anywhere. I
THINK it's a germanium PNP but that's a guess...I was hoping maybe
someone had some better info on it.
What kind of package is it in? Also, is there any chance the "8" is
really a "B"? Some of the early GE transistors had strange part
numbers like 4JD1B3.
- John
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