Voltage for Aluminum Electronlic Resistors

Dallas · Post by **Dallas** » 13 Feb 2009, 01:47

The FAQ section has listed 50v electrolic resistors. Noticed at Mouser that the 50v are about $.21 and the 25v are about $.06 each. Do I need more than a 25v rating for a 9v stompbox?
Is there some other advantage to more volts? They are a little bigger it looks like.
Kind of clueless...

Dallas · Post by **Dallas** » 13 Feb 2009, 02:38

SORRY - the title of this thread was completely butchered.
Should read Elecrolytic Capacitors.

What an idiot.

Well, it can only go uphill from here ---

earthtonesaudio · Post by **earthtonesaudio** » 13 Feb 2009, 02:58

The voltage rating should be at least equal to the maximum voltage the cap will have on it. Adding 50% is a good idea for reliability. 50V will still work fine, but like you said they're larger/more expensive. You would be fine with all 16V caps.

Ronsonic · Post by **Ronsonic** » 13 Feb 2009, 17:13

There's no advantage in the 50V rated cap, unless you just like bigger. Stick with 25V if you ever anticipate running at 18V, or 16V caps if you'll keep it to 9 - 12V.