[sdiy] Buchla 281 part substitutions?

[Cornutt, David K]

> From: J Alexander [mailto:diyid at hotmail.com]
> -The schemo calls for a diode numbered uA741, where 'u' is 
> the micro symbol. 
>   What is this part?  What to substitute?

The mu-A was a manufacturer identification that
Fairchild used.  The part is just a garden-
variety 741 op amp.  In a lot of applications,
almost any other opamp will do, but you have
to watch out for circuits that use external
compensation to do tricky things.  You also
have to watch out for pin compatibility if the
packaging is unusual.