madbeanpedals::forum

Projects => General Questions => Topic started by: elenore19 on February 16, 2022, 05:04:39 PM

Title: Replacement for 0.1uf tantalum cap?
Post by: elenore19 on February 16, 2022, 05:04:39 PM
Hey all-
I'm missing a 0.1uf tantalum cap for a phaser build.
The capacitor is Bias voltage filter capacitor.
The project is this:
https://aionfx.com/app/files/docs/emerald_documentation.pdf

I've never heard of a 0.1uf polarized cap, so I must've overlooked it thinking it wasn't polarized.

Is there any chance that the polarity isn't a must and I could just replace it with a 0.1uf MLCC?

If polarization is a must---I have a bunch of 1uF electro caps. any chance I could wire 10 of those in series to replace this part? Also how much of a difference is it going to make to have electrolytic as opposed to tantalum in this position?

Thanks for the help!

-Elliot

Title: Re: Replacement for 0.1uf tantalum cap?
Post by: EBK on February 16, 2022, 05:11:59 PM
Yeah, I don't get it either.
I hope it wasn't spec'd that way purely for the symmetry aesthetics.
Title: Re: Replacement for 0.1uf tantalum cap?
Post by: Betty Wont on February 16, 2022, 05:12:44 PM
https://www.taydaelectronics.com/capacitors/tantalum-capacitors/0-1uf-50v-radial-tantalum-capacitor.html
Title: Re: Replacement for 0.1uf tantalum cap?
Post by: madbean on February 16, 2022, 05:15:54 PM
You can nearly always sub a non-polarized cap (whether electrolytic, film, mlcc) for a polarized one. Since in this case it's being used as a decoupling cap on the bias voltage, I don't see why it would need to be a tantalum. The trimmer is set and forget.
Title: Re: Replacement for 0.1uf tantalum cap?
Post by: elenore19 on February 16, 2022, 05:17:20 PM
Quote from: madbean on February 16, 2022, 05:15:54 PM
You can nearly always sub a non-polarized cap (whether electrolytic, film, mlcc) for a polarized one. Since in this case it's being used as a decoupling cap on the bias voltage, I don't see why it would need to be a tantalum. The trimmer is set and forget.

Amazing. Thank you so much for the insight and expertise!