quick question about changing cap uf and v

[gmzombie]

i have been doing cap kits for a while now and while i understand moving up a little on the uf and v is ok i just wanted to get your answer on this particular cap. i have currently a 4.7uf@50v and its pretty tall and fat. but when i originally ordered a sim cap it was small and skinny. but i have a 10uf@100v cap that came with my kit. would that be ok to install i know its a 50% increase to what i have

[Agent24]

Re: quick question about changing cap uf and v

If there's a large size difference it may be due to differences in properties of ESR etc, probably pay to check it out in detail before you go changing things.

[budm]

Re: quick question about changing cap uf and v

It also depends what that cap is being used for: filtering, time delay, etc.

[999999999]

Re: quick question about changing cap uf and v

MUCH more detail is needed. Offhand, I'd guess your small skinny cap was electrolytic and the one you're comparing against is a film cap... but I could be wrong.

What's doing cap kits? What's a sim cap? Maybe I am just tired and will understand later...

As budm mentioned, if it's a frequency filter cap or for timing then use the same uF value but uF changes don't matter (I'm sure there are exceptions) while if it is power rail decoupling or ripple filtering, substituting the 10uF for a 4.7uF should work, except that if that 4.7uF is a film cap it can handle AC and would have lower ESR which can be important for high frequency circuits.