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-   -   Searching pinout 2SC1663/2SA835 (http://www.diyaudio.com/forums/solid-state/149342-searching-pinout-2sc1663-2sa835.html)

tubee 24th August 2009 02:20 PM

Searching pinout 2SC1663/2SA835
 
I am searching for the pin order of these transistors. Searched some while on www no result.

Anyone?

richie00boy 24th August 2009 02:22 PM

It took me less than 1 second and Google. How were you searching???

http://www.datasheetarchive.com/2SC1663-datasheet.html

tubee 24th August 2009 02:34 PM

Yes had those site too. Its informs about all characteristics, but no pinout visible , for me at least.

StevenOH 24th August 2009 03:07 PM

Face up, that would be : E-B-C
If they are from/in the equipment, the marking can be on the board. In any event, do the junctions diode check - all these databooks can be misleading.

tubee 24th August 2009 04:57 PM

Thanx !!

Then is the layout printed allright in the service manual, but not correct on the pcb. I will take my precautions and checke everything.

richie00boy 24th August 2009 05:15 PM

Quote:

Originally Posted by tubee (Post 1906003)
Yes had those site too. Its informs about all characteristics, but no pinout visible , for me at least.

I saw on that site that it was package TO-202var, so then put that into Google and found another device with that pinout and a datasheet for it.

Steve Dunlap 24th August 2009 05:19 PM

http://pdf1.alldatasheet.com/datashe...C/2SC1667.html

StevenOH 24th August 2009 05:50 PM

<<Then is the layout printed allright in the service manual, but not correct on the pcb.>>

Too bad. I wouldn't be surprised, if you will end up with this pinout: B-C-E.
Collector voltage drop will be less then that of the Emitter junction. And you can follow the traces on the board.
For replacement look for the same grades: Sony grades their parts by digits.

tubee 24th August 2009 06:00 PM

I have discovered the confusing/mix up. The Sony amplifier i am working on is perfectly symmetric built, and so these transistors are mounted, one channel with back and other with frontside to heatsink mounted.

Lumba Ogir 25th August 2009 06:10 AM

tubee,
if sill in doubt, the pinout is E-B-C, C to cooling fin. I`m not aware of any deviations for this package.


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