On Fri, 3 Feb 2017 21:12:30 -0000, "Benderthe.evilrobot"
wrote:


wrote in message



And what are these newer ones made from?

I know the mica and ceramic caps are reliable and last almost forever.

I've seen loads of ceramic caps fail - but mostly in TV horizontal scan
sections where the frequency is over 15kHz and high voltage pulse
conditions.

This got worse with ever increasing PC monitor resolutions.

AFAICR; mica caps were pretty reliable - in most of the places I found them,
they were used for precision and a specific tempco.

I could see them failing in the HV sections of ol CRT televisions and
monitors. Alot of stuff seemed to fail at those high voltages.

But in radios and audio amps, they seem darn near fail proof....