2SC5200/2SA1943 Toshiba or Fairchild - Page 3 - diyAudio
Go Back   Home > Forums > Amplifiers > Solid State

Solid State Talk all about solid state amplification.

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
Reply
 
Thread Tools Search this Thread
Old 2nd June 2009, 04:53 AM   #21
diyAudio Member
 
Join Date: Jul 2005
Location: Podkarpacie, Poland
Default what about STMicroelectronics?

2sta1943

2stc5200
__________________
Wojtek
  Reply With Quote
Old 2nd June 2009, 12:55 PM   #22
wg_ski is offline wg_ski  United States
diyAudio Member
 
Join Date: Oct 2007
Default Re: what about STMicroelectronics?

Well, the circle is complete - even ST is making clones of that transistor now. Now there may be very slight sonic differnces between all of them - but in terms of basic characteristics and ruggedness, one is probably just as good as the other. If someoene wanted only a Toshiba, they could go out of their way to get it if they wanted to. The rest of us get what our distributor stocks. And with all the major players making them "My dist. doesn't stock Toshiba" won't force anyone anywhere to go get trannies from questionable sources.

I wonder if it was the industry's response to all that counterfieting going on. If there are a number of legitimate sorces instead of only one, who needs fakes form China?
  Reply With Quote
Old 3rd June 2009, 09:49 AM   #23
burbeck is offline burbeck  United Kingdom
diyAudio Member
 
Join Date: Aug 2004
Location: Ratae Coritanorum
Quote:
Originally posted by jaycee


Profusion don't claim to supply the Toshiba ones, although they do link to their data sheet. From what I've heard, Profusion supply clones made by Semelab, also sold as Magnatec by Farnell and others.
Hi
well its true that they do not say that these parts are Toshiba on their web site describing the manufaturer as 'other'. i have used lots of these parts from them always been the real thing, if anyone still not convinced give them a call to verify.
Profusion are a very good reliable company.
__________________
regards
bob
  Reply With Quote
Old 3rd June 2009, 02:45 PM   #24
rephil is offline rephil  Europe
diyAudio Member
 
Join Date: Nov 2004
Location: In Belgium at the French border.
Hi jaycee,

Originally posted by jaycee

Profusion don't claim to supply the Toshiba ones, although they do link to their data sheet. From what I've heard, Profusion supply clones made by Semelab, also sold as Magnatec by Farnell and others.

If you don't ask, you don't know. I did ask and they answered that they only sell original parts. Profusion is OK for me.

I have got without any doubt good original Toshibas transistors at low cost.

Best regards

rephil
  Reply With Quote
Old 3rd June 2009, 03:17 PM   #25
bbp is offline bbp  China
diyAudio Member
 
Join Date: Sep 2005
It seems that the ST's has a low Cob
226pF comparing to TOSHIBA's 360pF
__________________
calm down and enjoy your time in experiment
  Reply With Quote
Old 3rd June 2009, 05:01 PM   #26
tinitus is offline tinitus  Europe
diyAudio Moderator R.I.P.
 
Join Date: Nov 2005
Quote:
Originally posted by bbp
It seems that the ST's has a low Cob
226pF comparing to TOSHIBA's 360pF

Which means? explain please, which would then be best?
Another thing I like to know, are those specs always 100% reliable?
__________________
sometimes we know very little, and sometimes we know too much
  Reply With Quote
Old 3rd June 2009, 05:30 PM   #27
wg_ski is offline wg_ski  United States
diyAudio Member
 
Join Date: Oct 2007
Quote:
Originally posted by bbp
It seems that the ST's has a low Cob
226pF comparing to TOSHIBA's 360pF

Change the test conditions and you can get that much variance in the result.
  Reply With Quote
Old 4th June 2009, 01:30 AM   #28
bbp is offline bbp  China
diyAudio Member
 
Join Date: Sep 2005
Quote:
Originally posted by wg_ski



Change the test conditions and you can get that much variance in the result.

Yes,TOSHIBA shows the test condition but ST not
__________________
calm down and enjoy your time in experiment
  Reply With Quote
Old 4th June 2009, 06:17 PM   #29
diyAudio Member
 
Join Date: Nov 2005
Location: Southampton
Default OnSemi MJL3281/1302 in Crest

Hi there, thought this might be a sensible place for this question.

I've got a Crest CA12 for repair which uses the old Toshiba 3281/1302. It needs a whole channels worth of devices (22). Obviously I can't use the Toshibas but I'm wondering if the OnSemi's might be a good alternative. They do a few different versions so one of them must be suitable. Comparing specs, the Cobb of the Onsemi's is higher but other than that they're equivalent or better.

Any comments?
  Reply With Quote
Old 4th June 2009, 07:22 PM   #30
diyAudio Member
 
Join Date: Nov 2004
Location: Florida
The On-Semi version of the 3281/1302 will replace the Toshiba just fine. They are really rugged transistors. On Semi stuff is high quality, and I've not had any failures. They also make a higher-powered 4281/4302 series with more gain, and slightly more power rating.

Now about the Fairchild version of the 5200/1943............Apparently the same die is used in all of the different sizes, they are just different packages according to the datasheet.

It would be nice to get a bunch of the 50W and 80W TO-220 ones. True power transistors as drivers, without the huge size. Even as a big power amplifier, you can parallel more devices in a smaller space with TO-220.

The other advantage of powerful TO-220 would be making a small compact power amplifier, and having devices with a really High SOA.

Those are the biggest TO-220 I've ever seen. The Power devices are interesting as well, being the fact this transistor is in more packages than anyone else offers, that makes it very desirable IMO.

Imagine if On-Semi made a 3281/1302 in a TO-220 package, that would be killer.
__________________
You can call me Mad Professor, building crazy experiments in my Electronics Workshop
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Toshiba 2SC5200/2SA1943 Spice Models thmios98 Solid State 20 21st November 2011 02:27 PM
Toshiba 2SA1943 and 2SC5200 Transistors Archimedes Swap Meet 10 7th November 2008 02:56 PM
Toshiba 2sa1943 + 2sc5200 clear out ANTHONY2181 Swap Meet 0 21st June 2004 10:40 PM


New To Site? Need Help?

All times are GMT. The time now is 08:30 AM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2