Layouts for perf and PCB effects: Boss FZ-2 Hyper Fuzz

For most pedals that run on 9V … yes, that would be fine.
If you’ve built a pedal that can also draw 18V, you’ll need to use capacitors that are rated higher than the voltages running on the circuit. Make sense? That way, your caps won’t get damaged if you’re using more electricity than they can handle.
You really need to check out what type of circuit you are building and then choose the parts that are good for this pedal.

I highly recommend checking out some of the “beginner” resources available on other websites. They will likely help answer many of these questions from newbies. Here are a few good ones:

https://www.coda-effects.com/2018/06/how-to-build-your-first-diy-guitar.html

http://www.generalguitargadgets.com/how-to-build-it/technical-help/beginner-information/beginner-information-links/

http://www.generalguitargadgets.com/how-to-build-it/technical-help/

http://tagboardeffects.blogspot.com/p/components.html

Everything You Need to Build DIY Guitar Pedals

I could go on, but some google searches will give you more links and websites to get you going.

I hope it helps. Good luck!

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