Skeptical buffer: C1 (Ceramic 3p)

[Arch1medes]

I’m shopping for components and 3pf Ceramic cap seems to be hard to find in the Amazon kits. Does anyone know why?

Or a better question: What’s a cost effective way to get one-off components, specifically this one?

I’m new to the DIY life, so any info is appreciated. Thanks!

https://docs.pedalpcb.com/project/SkepticalBuffer-PedalPCB.pdf

 

[Robert]

Tayda is your friend.

https://www.taydaelectronics.com/10-x-3pf-50v-ceramic-disc-capacitor-pkg-of-10.html

With that said, if the only thing holding you up is this capacitor you really can just omit it and no one will ever know the difference.

 

[Arch1medes]

Thanks Robert! Based on my reading and amatuer understanding of the circuit, it does seem like I can leave it out (C1 acting as some sort of filter?) but due to all the abstract claims of sonic magic I was concerned lol

 

[Robert]

Don't you dare.

I stand corrected.... there is one person out there who is absolutely seething at my suggestion of omitting such a carefully selected and sonically relevant component.

 

[Arch1medes]

now that i have your Tayda link i might as well add it

 

[Arch1medes]

View attachment 97879

Don't you dare.

I stand corrected.... there is one person out there who is absolutely seething at my suggestion of omitting such a carefully selected and sonically relevant component.

One more question: for this application does voltage rating on the capacitors matter? For any given search on Tayda i get 3+ options for voltage...

 

[jwin615]

Rate pedal caps at twice the voltage you plan to run them at or 1.5x the voltage you plan to accidently plug them into. whichever is greater.
25-35v is fine. Ceramics are usually even high rated. Use C0G/NP0 MLCC when able.
Dont be like Peavey and put 18V C1 in an 18V pedal.

 

[drew.spriggs]

One more question: for this application does voltage rating on the capacitors matter? For any given search on Tayda i get 3+ options for voltage...

As long as the voltage rating is a bit above the maximum voltage you're going to see, then whatever is going to fit will be fine.

You can leave that cap out - there is zero chance it is doing anything that is audible, and I doubt you're even going to be able to measure its inclusion.

 

[Feral Feline]

What if...

https://www.taydaelectronics.com/10-x-3pf-50v-ceramic-disc-capacitor-pkg-of-10.html

... you put all 10 caps from the Tayda order in?

C'mon folks — In PARALLEL, 30p!

Geeeze, NOT in series, 0p3, I'm not a complete madman.

 

[dot matrix madness]

Well, 3p that can also be realized by taking two 1 inch long pieces of (insulated) wire and twisting them.
I've spotted that on the PCB of the Simmon SDSV drum.

 

[JTEX]

I like to think of that cap as a placeholder, in case you want to replace it at some point with one that actually does something. Looks a bit prettier than an unpopulated footprint, I guess?? Depending who's looking.