D43C7 Transistor - Any Info? Substitutes?

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Whoops

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Hi,
I'm repairing and Altec 1592B mixer.

I need to replace 2 transistors in the main Board, they are D43C7 transistors.

I can't find them anywhere.

Does anyone know if there's any substitutes for this transistors?
Or if I can buy them somewhere?

thanks

 
look at the Altec history site, and find the Altec transistor cross reference document.  They had their own part #s for standard transistors requiring critical selection.  It could be on those lists.
 
emrr said:
look at the Altec history site, and find the Altec transistor cross reference document.  They had their own part #s for standard transistors requiring critical selection.  It could be on those lists.

Thanks a lot,
I searched over the website, but couldn't find anything related to this transistor

is this the Doc you were refering to ?
http://alteclansingunofficial.nlenet.net/publications/techletters/TL_175A.pdf


moamps said:

thanks a lot also,
I do a search about this transistor, hope I can buy it somewhere.

Have you tried to use it in place of an D43C7?



 
Whoops said:
I do a search about this transistor, hope I can buy it somewhere.
Hi,
www.mouser.com in USA and www.farnell.com in EU have MJE172 in stock.

Whoops said:
Have you tried to use it in place of an D43C7?

Nope, that's info from the SGS THOMSON transistors cross reference.

Regards,
Milan
 
moamps said:
Whoops said:
I do a search about this transistor, hope I can buy it somewhere.
Hi,
www.mouser.com in USA and www.farnell.com in EU have MJE172 in stock.

Whoops said:
Have you tried to use it in place of an D43C7?

Nope, that's info from the SGS THOMSON transistors cross reference.

Regards,
Milan

Cool, I already ordered them from Farnell.
Although the specs are a litle bit different from the D43C7 so I don't know if they are a straight substitute or not. Maybe I have to change some stuff in the circuit so that it works properly.

 
Cool, I already ordered them from Farnell.
Although the specs are a litle bit different from the D43C7 so I don't know if they are a straight substitute or not. Maybe I have to change some stuff in the circuit so that it works properly.
I know this was a long time ago, but I'm curious if the MJE-172 worked out as a direct substitute for the D43C7?
 
it was a long time ago, I don't remember what i used neither do I even remember that I had to replace the transistors in the unit.
I just remember it was a custom job for a client. I made the first 3 channels independent of the mixer, so I installed balanced direct outs for those and I had to modify the Bootle preamp modules for higher gain. Had also to add a negative rail to the PSU to power the balancing IC's.

I dont remember anything else sorry
 

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