2sc2705 for differential??

vynuhl.addict · 29th November 2006, 07:09 AM

Has anyone tried these or its pnp counterpart for the input differential, They seem to be extremely linear up to about 30ma, Iknow they work very well in a vas stage, i am presently using 2n5551 and have itchy fingers to try these as the various 2n5551 are all over the place spec wise from manufacturer to manufacturer..

Thanks
Colin

moamps · 29th November 2006, 07:00 PM

Hi Colin:
I also tried 2sc2705/2sa1145 in Vas. In my opinion, 2sa970/2sc2240 are better suited for input differential pairs (higher hfe, lower noise).

Regards,
Milan

Leolabs · 30th November 2006, 12:13 AM

Quote:

2sa970/2sc2240 are better suited for input differential pairs (higher hfe, lower noise).

Yes.No problem at +/-50V.

29th November 2006, 07:09 AM	#1
vynuhl.addict diyAudio Member Join Date: Mar 2006 Location: Vancouver, BC,Canada	2sc2705 for differential?? Has anyone tried these or its pnp counterpart for the input differential, They seem to be extremely linear up to about 30ma, Iknow they work very well in a vas stage, i am presently using 2n5551 and have itchy fingers to try these as the various 2n5551 are all over the place spec wise from manufacturer to manufacturer.. Thanks Colin

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
SPICE models for 2SC2705 & 2SA1145	Gunders	Solid State	3	20th January 2010 04:02 PM
2SC2705, 2SA1145 alive again?	OliverD	Parts	2	10th March 2009 03:16 PM
Installed the 2sc2705 in differential..	vynuhl.addict	Solid State	0	10th December 2006 09:06 AM
2SC2705 / 2SA1145 obsolete?	OliverD	Parts	9	29th July 2004 04:56 PM

New To Site?	Need Help?
Register to Participate Search Privacy Statement Contact Us	Frequently Asked Questions Did you forget your password? Mark Forums Read


	Please consider donating to help us continue to serve you. Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving

29th November 2006, 07:00 PM	#2
moamps diyAudio Member Join Date: Oct 2002 Location: Croatia	Hi Colin: I also tried 2sc2705/2sa1145 in Vas. In my opinion, 2sa970/2sc2240 are better suited for input differential pairs (higher hfe, lower noise). Regards, Milan