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

Jean-Pierre Desrochers jpdesroc at oricom.ca
Tue Jan 14 14:58:50 CET 2014


Hhhmmmm.... Not a very good NPN match for DIY..

Thanks Tom.

Le 2014-01-14 08:47, Tom Bugs a écrit :
> First google search for "2N2223 Datasheet"
> http://www.alldatasheet.com/datasheet-pdf/pdf/99265/CENTRAL/2N2223.html
> Suggests 20%
> 
> On 14/01/2014 13:40, 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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