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What's different from bi-polar and non-polar caps?
Old 7th September 2010
Gear interested

Thread Starter
What's different from bi-polar and non-polar caps?

I found out some electrolytic caps are bi-polar and some are non-polar. What's different between the two?

Some bi-polar caps still has their pins unequal just like electrolytics. Why does it have to be like that?
Old 7th September 2010
Lives for gear

Bipolar caps can cope with the rated DC either way around without degradation unlike 'ordinary' electros that will die if powered backwards.
Lead length is probably because the machine that makes them is the same line as the polarised one or it may possibly indicate which foil is on the outside.
Matt S
Old 7th September 2010
Lives for gear
ulysses's Avatar
As far as I know, bipolar and non-polar are the same thing. Inside, they are actually just two polarized capacitances in series, with opposing polarity.
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