Practical Construction of Pre-Amps, Tone Controls, Filters and Attenuators.

[GREEN FUZ]

A bit of a mouthful, yes, but it`s the title of a book I found printed in 1979. A lot of the circuits call for an SN72741P chip. Unfortunately I can find little information on it. Does anyone know of a substitute?

[MikeH]

The Datasheet archive lists all of these as "Similar Parts"

L741B1     
ULN2151M     
N5741V     
741CE
741CN14     
ULN2151D

http://www.datasheetarchive.com/

[slacker]

I think it's another name for an LM741 opamp so you could use some of those, or any modern opamps will probably work.

[GREEN FUZ]

Thanks guys  . Don`t know why I couldn`t find that info myself.

[petemoore]

  Yup, gotta watch the pinouts of the Single Vs. Dual opamps, easily enough ferreted out what the board or schematic calls for, and a dual can be re-pin-outted to be used as a single, two singles can = dual...but of course the board/wiring will be different.
 

[Mark Hammer]

You'll be able to replace any two of those with a 4558 (any brand) or a TL062/72/82 or an NE5532.  If the circuit uses a 741, then its requirements are not very high, and the circuit can often be improved upon with respect to noise, distortion, current consumption, etc., by use of a different op-amp.  Just make sure you observe correct pinout.  Personally, I find it helpful to scan the schem, and digitally remove and replace the pin numbers.