I have two mosfet transistors out of an old stereo i bought in 1976, that i've been unable to find a replacement or equivalent. They are TI & the info on them is in 3 lines. The first transistor is 1012, A7611, A-00, The second transistor is 1013, A7617, A-00. Any help locating these or a cross reference equivalent would be appreciated very much.
The oldest data book I have is from 1990. There are no part numbers like this in it. I also checked all our systems, and I couldn't find anything.
I suspect from the vintage that these might be BJTs.
Sorry we couldn't be of more help.
Audio Applications Engineering Manager
Dallas, TX USA
I chatted with a few of my friends about this. We came up with:
Rochester Electronics - this is a distributor who specializes in stocking obsolete parts
I think those may be germanium BJTs from the 60s. Are they in TO-5 packages? 2N1012 and 2N1013 are complementary.
I wonder if this guy has tried calling an electronics repair shop - best bet is that they would have the book that lists parts and equivalent replacements.
Pretty sure A7611 and A7617 are date codes, 1012 and 1013 bring up nothing - except some 12 year old TI opamps. There are 2SK1012 and 2SK1013 power MOSFET, but they are both N channel, not compliments of each other.
I think the complement MOSFET would be a 2SJxxxx device. I recall 2SK and 2SJ devices being used quite a lot, starting with Hafler amps. I still use a DH200 at home.
You might also try DIYAudio and other such sites.
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