Transistor replacements - 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 4th July 2011, 08:21 PM   #1
diyAudio Member
 
Join Date: Aug 2006
Default Transistor replacements

Hi could anyone let me know if there are sutible replacements for these transistors?

2sc1735d
2sa850d
2sb568c
2sd478c
2sc2089gr
2sa942gr

Any information would be gratefully recieved.

thanks
chris
  Reply With Quote
Old 4th July 2011, 08:41 PM   #2
diyAudio Member
 
east electronics's Avatar
 
Join Date: Jan 2006
Location: Athens GREECE
answer is very simple if the aplication is audio amplifier you can replace them with almost anything u like

pin compatible will be a comfort if available and better specs and quality will perform better any way

There is only one thing you need to take care off That will be that chages have to be symmetric ...

For example 2sc1735d looks like a bd 139 if you choose that this is the closest available you need to replace the oposite PNP transistor with a BD 140

re bias the all thing and you are done

for stages like LTP you need to make sure that the replacement parts meet the specs from any aspects current flow ft voltage cob ...im sure that you will find plenty ... also if your amp features current source on the LTP then its much easier .... rest of stages like VAS or vi limiters choosing parts should be a walk in the park

Just last night i fixed a luxman A321 that features a 2SA1239 (unobtainable ) dual DIL6 tranistor.... a couple of closely matched 2N5401 transitors worked like a charm !!!


Kind regards sakis
__________________
SERVICE ΕΝΙΣΧΥΤΩΝ ΚΑΙ ΙΑΠΩΝΙΚΩΝ ΜΗΧΑΝΗΜΑΤΩΝ ΗΧΟΥ www.eastelectronics.gr

Last edited by east electronics; 4th July 2011 at 08:44 PM.
  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
Transistor replacements carlmart Solid State 43 26th April 2012 05:09 PM
Transistor replacements needed gekkehenk Solid State 16 30th April 2010 06:11 AM
Transistor replacements glen65 Solid State 1 19th November 2007 07:48 PM
Prower transistor replacements cathode_ray Parts 7 26th October 2007 10:40 AM
Novice Question on Transistor Replacements TGRANT Solid State 6 4th November 2006 10:51 AM


New To Site? Need Help?

All times are GMT. The time now is 01:46 PM.


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