matched transistors in chips

[danial stocks]

Dont know if anyone already knows about these, but I just identified more 
chips in my box of weird maybe they'd be useful oneday box and came out with 
matched transistor quads!

MPQ series or in surface mount MMPQ series some are straight equivalents to 
the number of the corresponding transistor ie MPQ3904 = 4x 2n3904 also  
2907, 3906 in this fashion, there are others that seem to just have 
arbitrary numbers, and the TPQ series seems the same too from tests I've 
tried but no data..
Anyway I thought I might mention this as they could be a good alternative to 
the CA3046 etc and probably loads of them lying around in old junk, hard 
drives etc if you neeed matched trans for 2am project..
some are available on partminer etc.. I got a .pdf cant remember where which 
is a general summary of these, I'll send it to anyone who's interested..
Cheers,
Dan
________________________________________________________________________
Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com