[sdiy] Cannot find % of precision of 2N2223 matched pair ..

Ian Fritz ijfritz at comcast.net
Tue Jan 14 21:28:21 CET 2014


Easy enough to measure yourself:
http://home.comcast.net/~ijfritz/MiscProj/transmat001.pdf

Ian



At 06:40 AM 1/14/2014, Jean-Pierre Desrochers wrote:
>Can any body come with the percentage of precision
>of a 2N2223 NPN matched pair can ?
>I could find some specs on that part but nothing
>is said about the precision of the NPN transistors pair..
>For example SSM2210 trannys are 0.5%, LM394 are 2% matched.
>
>Any finds welcome.
>J-Pierre
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