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transistor equivilent

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Dragon Tamer

Dragon Tamer

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I need to know what weather or not I can use a 3904 as a substitution for BC109 and BC549 (I think that these are the parts).
 
A BC109 and BC549 have very low noise. The 2N3904 has noise that is higher but all other spec's are the same.

Their pins are reversed.
 
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