The PHILCO Phorum

Full Version: Film caps in place of electrolytics.
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Been reading on some restore threads where the electrolytic can is being restuffed with a solen fast cap? Are they electrolytic or plain film?
They are film caps.
So what is the deal of using them over traditional electrolytics?
The electrolytic capacitor is officially a limited lifetime part.
The film capacitor is unlimited lifetime part. Also self-healing. Also has much better ripple/ESR characteristics.
So where it fits (they are large: the electrolytic claim to fame is large capacitance density) it is a good idea to put it in instead.
On my 16X, I had to put something where the Mershon electrolytics would have been. Two film type metal cased motor caps were fixed using a home made strap in a configuration close to the original, with paper insulation around the cans.

I have since obtained a set of original caps which could be restuffed and fitted to the chassis. I may get to this, but am happy with the look, performance and hopefully long life of the film caps