Prehistoric Opamps

spotnie · 4th March 2006, 01:57 PM

Hi,

I am looking for similar replacements for the following parts:
* M5207L01 - Voltage Dependent Opamp
* M5281AL - Opamp
* M5216AL - Opamp

Parts belong to this guitar effect: Here

I've seached google, a few webshops (Farnell, Conrad, Digikey), this forum, some books, but none of them had those or links to any replacements.

Could someone help me, or atleast point me in the right direction?

Thanks in advance!

poobah · 4th March 2006, 04:24 PM

I have good luck with places like this

These are services that list excess inventory that is sitting on a manufacturers (not distributers) shelf. They act as an intermediary... broker of sorts.

I do not know how well it all works if you only need a few parts though... I have only used these services before when I needed large quantities of parts that were back ordered or otherwise unavailable.

Good luck,

Senso · 19th May 2007, 07:31 AM

You could check my site and be pleasantly surprised:

http://www.vintageplanet.nl

Senso

Chucko · 21st May 2007, 08:53 PM

The op amps look like standard 8-pin dual pinout (other than the + supply pin being mislabeled as "3" instead of 8). You could probably use any of a number of chips in there. Only IC2A is in the audio signal path, and IC2B to generate a virtual ground... the others are used to generate and/or manipulate the VCA control voltage, at frequencies well below the audio band, so almost any crummy low-voltage dual op amp will work fine for IC3 and IC4.

The M5207L01 VCA would be hard to substitute. Good luck in your search.

4th March 2006, 01:57 PM	#1
spotnie diyAudio Member Join Date: Nov 2005 Location: Lichtenvoorde	Prehistoric Opamps Hi, I am looking for similar replacements for the following parts: * M5207L01 - Voltage Dependent Opamp * M5281AL - Opamp * M5216AL - Opamp Parts belong to this guitar effect: Here I've seached google, a few webshops (Farnell, Conrad, Digikey), this forum, some books, but none of them had those or links to any replacements. Could someone help me, or atleast point me in the right direction? Thanks in advance!

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4th March 2006, 04:24 PM	#2
poobah diyAudio Member Join Date: Nov 2005	I have good luck with places like this These are services that list excess inventory that is sitting on a manufacturers (not distributers) shelf. They act as an intermediary... broker of sorts. I do not know how well it all works if you only need a few parts though... I have only used these services before when I needed large quantities of parts that were back ordered or otherwise unavailable. Good luck,

19th May 2007, 07:31 AM	#3
Senso diyAudio Member Join Date: Jun 2005 Location: Amsterdam	You could check my site and be pleasantly surprised: http://www.vintageplanet.nl Senso

21st May 2007, 08:53 PM	#4
Chucko diyAudio Member Join Date: Jan 2002 Location: Silicon Valley, CA, USA	The op amps look like standard 8-pin dual pinout (other than the + supply pin being mislabeled as "3" instead of 8). You could probably use any of a number of chips in there. Only IC2A is in the audio signal path, and IC2B to generate a virtual ground... the others are used to generate and/or manipulate the VCA control voltage, at frequencies well below the audio band, so almost any crummy low-voltage dual op amp will work fine for IC3 and IC4. The M5207L01 VCA would be hard to substitute. Good luck in your search.

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