[sdiy] PNP and NPN matched pairs / arrays?

[David Ingebretsen]

In my Synthasystem project, Nyle specified an NPN pair and PNP to be in
thermal contact in his VCO core. I used a THAT340 to accomplish this and it
works great.

David

>> -----Original Message-----
>> From: synth-diy-bounces at dropmix.xs4all.nl [mailto:synth-diy-
>> bounces at dropmix.xs4all.nl] On Behalf Of Dave Kendall
>> Sent: Wednesday, January 04, 2012 1:03 PM
>> To: synthdiy diy
>> Subject: Re: [sdiy] PNP and NPN matched pairs / arrays?
>> 
>> 
>> On Jan 4, 2012, at 19:25, Justin Owen wrote:
>> 
>> > Hello,
>> >
>> > I'm about to start looking into the world of matched transistor pairs
>> > or arrays of 4.
>> > I'm working on a design that might benefit from matched versions of 2x
>> > NPN and 2x PNP pairs (4x NPN and 4x PNP total).
>> > Ideally I'd like something that was available in DIL and SOT-23 (or
>> > similar) - but if I had to choose one over the other - SMT parts are
>> > my preference.
>> > Does anyone have a favourite part or range they could suggest for me
>> > to have a look at?
>> > FYI - I'm currently using 2N3904s and 2N3906s matched with my DMM - so
>> > I'm up for hearing about any parts that might be an improvement on
>> > that (excluding hand-matching pairs).
>> > Thanks - and happy new year to everyone!
>> >
>> > Justin
>> >
>> 
>> I haven't used them myself, but I believe they have been used in sdiy
>> successfully before (can't remember where though - an Oakley module
>> maybe?)
>> 
>> Check out the THAT340 for a dual NPN + PNP pair in a DIL or SMT package.
>> http://www.alldatasheet.com/datasheet-
>> pdf/pdf/122003/ETC1/THAT300.html
>> 
>> Hope this helps :-)
>> Happy new year!
>> 
>> cheers,
>> Dave
>> 
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