Can I swap an electrolytic capacitor with one with a higher voltage?

I wish I knew more about this stuff, but alas I do not. I have a radial lead aluminum electrolytic capacitor (rated 470mF and 25v) that died on me. Can I swap it out with one rated at 35V, or do I need to get one matching it completely? It is for a plasma, so if there is chance that 35V could cause more damage, then I would like to know!

Thanks

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Is that mF or $\mu F$? The ones with higher voltage will probably be larger, so space could be an issue, especially if the capacitor is in fact 470 mF. –  AndrejaKo May 13 '11 at 0:05
I agree, and to elaborate: 1 mF is 1000 μF, so a 470 mF capacitor is HUGE. mF is pronounced milifarad and μF is pronounced microfarad. –  dren.dk May 13 '11 at 7:55
very, very similar question to electronics.stackexchange.com/questions/13091/… –  JustJeff May 13 '11 at 9:43

Make sure that the replacement part is comparable in terms of ESR (equivalent series resistance), rated ripple current and rated hours. Don't use a general-purpose cap (usually rated for 1000 hrs or less, with ripple current specified at 120Hz) instead of a high-performance cap (ripple current specified at 100kHz, ESR in milliohms)

If the original capacitor was used in a high-frequency application (i.e. a capacitor on the output of a switching regulator) putting in a part that is not suited for the task will result in a severely shortened life for the cap and the need to replace it again once it blows up.

In general, going from 25V to 35V won't cause you a problem as long as the above parameters are comparable. Once you start getting above 35V, you'll find less and less high-performance capacitors available (the majority of low ESR parts tend to be 25V or lower).

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That is an excellent point to bring up, but his cap is rated in mF (!!), so I doubt this is a high-performance ceramic chip capacitor. –  ajs410 May 13 '11 at 17:16
I don't think he meant millifarads. I think he meant microfarads. Also, my discussion above is specific to aluminum electrolytic caps (I have different advice for ceramic caps.) –  Madmanguruman May 13 '11 at 19:35