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In Reply to: RE: That's a polystyrene cap. (nt) posted by Tre' on August 12, 2015 at 20:08:01
I haven't used those in years, but I recall that they melt and deform rather easily if too much heat is applied to the leads while soldering.
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"they melt and deform rather easily if too much heat is applied to the leads"
The leads are very thin, probably for that reason (they don't conduct heat well). I've had zero problems using these.
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Buy Chinese. Bury freedom.
Polystyrene is a great dielectric, but the service temperature is maybe 85 deg C. (Polypropylene is rated to 105 deg C.) Therefore, one should be careful not to mount them very close to tubes or power resistors.
Be careful with silver mica caps of any construction. Thanks to a powerful force called "silver migration" they tend to get leaky with applied DC. Even silver foil caps have problems. They develop fingers that poke through paper or film dielectrics.
Early Jensen silver caps had this problem but they say they fixed it.
I agree the SMs do sound good but check them sometime later for leakage.
I'm a KBG man, myself.
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Free your mind and your ass will follow -- Parliament/Funkadelic
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