Electrolytics vs polyester films. - diyAudio
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Old 2nd September 2010, 06:06 PM   #1
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Default Electrolytics vs polyester films.

I was peering around in a small stereo reciever I've been wanting to recap, taking notes of the values. I bagn to look around on Mouser, and I've noticed I could spend a little extra money and replace all the 1uf - 4.7uf caps electrolytic caps with polyesters of the same values.

Does anyone have a reason as to why I would not want to do this?
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Old 2nd September 2010, 06:24 PM   #2
Mooly is online now Mooly  United Kingdom
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Well... with the greatest respect... is it worth it ?

Also will the film caps physically fit, and if they don't then the end result will look a mess Not only that but any extra wires/lead length is an open invitation to pick up noise degrading the performance.

By all means have a go, but I would definitely get parts that fit the PCB.
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Old 2nd September 2010, 06:57 PM   #3
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If I'm reading the specs right, they will fit. Polyesters are often cheaper and smaller than say, polypropelynes. The thing I was looking at would be longevity, as films tend to last longer than electrolytics.

Last edited by Rod Beauvex; 2nd September 2010 at 07:02 PM.
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Old 3rd September 2010, 06:01 AM   #4
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If they fit OK and you feel the receiver is worth it then give it a go. Good electros last a long long time in normal use... 10, 15 even 20 years as long as they are not cooked. Film types won't deteriorate... up to you
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