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-   -   Whatever became of HiRel transistors ? (http://www.diyaudio.com/forums/parts/76846-whatever-became-hirel-transistors.html)

mobyd 31st March 2006 06:59 AM

Whatever became of HiRel transistors ?
 
AFAIK these were "boutique" transistors produced somewhere in Tokyo. TO3 packs, types EB203,204 (PNP) and ED203,204 (NPN).
A friend used 100s of them around 20 years ago in a production run of amps - never any failures. Whatever became of them ?
M

georgehifi 2nd April 2006 08:35 PM

I remember them, the EB203 and ED204 they were a powerhouse output trany for memory continuous 20amp 200mhz 200watt,
A guy named Peter Stein used them in his ME (Modular Electronics) amplifiers in his biggest one (ME150) was 14 per channel. I used 20 per channel in my water cooled 100watt pure class A amps, I used to get them off Peter then he could'nt source them any more and I found Janzs amplifiers se them in Sydney they may have a few left as they were a huge band amplfier manufacturing company, you could try them as they had 1000's left when I used to get them from them.


Cheers George

hoangde2005 9th March 2013 09:07 AM

Please!
Do You can send me the datasheet Hirel ED203?

Thanks

hoangde2005 9th March 2013 09:10 AM

Please!
You can send me the datasheet Hirel ED203?
Thanks


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