Searching pinout 2SC1663/2SA835

tubee · 24th August 2009, 02:20 PM

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 · 05:18 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

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 · 06:19 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.

24th August 2009, 02:20 PM	#1
tubee diyAudio Member Join Date: Jul 2004 Location: Netherlands	Searching pinout 2SC1663/2SA835 I am searching for the pin order of these transistors. Searched some while on www no result. Anyone?

24th August 2009, 02:22 PM	#2
richie00boy Did it Himself diyAudio Member Join Date: Nov 2003 Location: Gloucestershire, England, UK	It took me less than 1 second and Google. How were you searching??? http://www.datasheetarchive.com/2SC1663-datasheet.html __________________ www.readresearch.co.uk my website for UK diy audio people - designs, PCBs, kits and more

24th August 2009, 03:07 PM	#4
StevenOH diyAudio Member Join Date: Jun 2004 Location: USA	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. Last edited by StevenOH; 24th August 2009 at 05:18 PM.

24th August 2009, 04:57 PM	#5
tubee diyAudio Member Join Date: Jul 2004 Location: Netherlands	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. __________________ Daisy Bell

24th August 2009, 06:00 PM	#9
tubee diyAudio Member Join Date: Jul 2004 Location: Netherlands	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. __________________ Daisy Bell Last edited by tubee; 24th August 2009 at 06:19 PM.


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24th August 2009, 02:34 PM	#3
tubee diyAudio Member Join Date: Jul 2004 Location: Netherlands	Yes had those site too. Its informs about all characteristics, but no pinout visible , for me at least.

24th August 2009, 05:19 PM	#7
Steve Dunlap diyAudio Member Join Date: Sep 2008 Location: Here	http://pdf1.alldatasheet.com/datashe...C/2SC1667.html

24th August 2009, 05:50 PM	#8
StevenOH diyAudio Member Join Date: Jun 2004 Location: USA	<<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.

25th August 2009, 06:10 AM	#10
Lumba Ogir Banned Join Date: Apr 2005 Location: Stockholm	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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