need to id these transistors

PreSapian · 18th April 2012, 10:34 AM

i went to a local parts shop and asked for bc640 639 but instead got k922 a1266y and k732 c3198y. theyre not equivalents are they?

Enzo · 18th April 2012, 10:57 AM

The 2SA1266 and 2SC3198 would drop into their place, sorta, but they have lower voltage and current ratings compared to the originals. SO depends on what the application is and how much overspec the original parts were.

Elvee · 18th April 2012, 11:01 AM

Quote:

Originally Posted by PreSapian

i went to a local parts shop and asked for bc640 639 but instead got k922 a1266y and k732 c3198y. theyre not equivalents are they?

Not really: they are low noise, low current, low voltage signal-type transistors, whereas the BC's are medium current, medium power, medium voltage types.

KatieandDad · 18th April 2012, 12:38 PM

You can buy BC639 and BC640 on-line.

Cricklewood Electronics - CCTV. CCTV Equipment. CCTV Systems. Digital CCTV Cameras

18th April 2012, 10:34 AM	#1
PreSapian diyAudio Member Join Date: Sep 2009 Location: seoul	need to id these transistors i went to a local parts shop and asked for bc640 639 but instead got k922 a1266y and k732 c3198y. theyre not equivalents are they?

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
ID this for me?	rntlee	Tubes / Valves	8	29th February 2012 06:22 AM
Can someone help Id my drivers please?	klampykixx	Car Audio	2	12th January 2012 11:20 AM
toroid ID help	BeerCan	Power Supplies	2	24th May 2011 11:38 PM
Help me ID this driver	Racket Scientist	Subwoofers	5	3rd October 2010 03:01 PM
Please help ID this:	martioz	Everything Else	0	27th June 2006 04:34 AM

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

18th April 2012, 10:57 AM	#2
Enzo diyAudio Member Join Date: Sep 2004 Location: Lansing, Michigan	The 2SA1266 and 2SC3198 would drop into their place, sorta, but they have lower voltage and current ratings compared to the originals. SO depends on what the application is and how much overspec the original parts were.

18th April 2012, 12:38 PM	#4
KatieandDad diyAudio Member Join Date: Nov 2011 Location: UK	You can buy BC639 and BC640 on-line. Cricklewood Electronics - CCTV. CCTV Equipment. CCTV Systems. Digital CCTV Cameras