madbeanpedals::forum

Projects => General Questions => Topic started by: ddj3891 on May 17, 2019, 07:38:14 PM

Title: Cap substitution
Post by: ddj3891 on May 17, 2019, 07:38:14 PM
The muddbunny civil war calls for 430p caps.  The suppliers I use don't carry that.  Can I substitute that with another value without compromising the circuit?
The only resource that I know has them is mouser, but they have so many options I always end up getting weird sized caps because I don't know all the details to match what I'd get from mammoth or small bear.
Any suggestions would be appreciated.
Thanks.
Title: Re: Cap substitution
Post by: somnif on May 17, 2019, 08:37:52 PM
390pF or 470pF would work fine. Orange drop ceramic caps (which is mostly what EHX used at the time) tend to have high tolerances (20%) so their "430pF" caps could have been anywhere between 344pF and 516pF, if not even more out of the box.

If you are feeling neurotic, buy a handfull and meter them to find the closest to 430. Or just use a close value and know its likely as close as anything used in the actual construction.
Title: Re: Cap substitution
Post by: alanp on May 18, 2019, 04:04:18 AM
EHX used whatever they could get their hands on that was cheap, back in the day.

You'll be fine.