Re: Question about transistor substitutions.


<ngdbud@xxxxxxxxxxx> wrote in message
news:1124644509.403689.258840@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
> In most circuits could a 2n3904 be used in place of a 2n4401, and a
> 2n3906 in place of 2n4403? 906 is the pnp and 904 is npn, right?
>
In most common circuits operating below a megacycle or so you can subistute
just about any transistor that is any where close to the origional
transisitor. The operating conditions are mostly set by the external
components. You only get into trouble if it is special such as low noise
or high gain. Just watch the voltage and power ratings of the transistor.



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