Thanassis G. Giokas
Knowing not how to listen, they do not (know) how to speak.
HERACLITUS
Ελληνικά English

ELECTRONIC COMPONENTS AND MATERIALS TEXTBOOK

CHAPTER 3 - CAPACITORS

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In Table below we give you the classes insulating materials, sorted by their operational temperature, according to IEC85.
CLASS LIST INSULATING MATERIALS MAXIMUM OPERATIONAL TEMPERATURE
Y
Main Cotton, natural silk, synthetic wool, Rayon, paper and its products, wood, polyamide thread, urea resin, compressed paper, etc.
90°C
Secondary Polyethylene, polystyrene, vulcanized rubber, etc.
A
Main The materials of the Y class ingrained in varnishes or oils, seluzolic film, polyester resin, etc.
105°C
Secondary Elastormers of butadiene-acryl-nitride, elastormers of polychloroprene.
E
Main Bakelite, polypropylene, acetic resin, polyester, polycarmonated film, polyurethane, polyamide resin.
120°C
B
Main Whitewash, mica and its products, glass fibers, glass fibers ingrained in varnishes and oils.
130°C
Secondary Polymonochlorofluoroethylene, crystallized polycarmonated film
F
Main Glass fibers, whitewash
155°C
Secondary Inorganic materials ingrained in resins for endurance against high temperatures
H
Main What is mentioned previously in the secondary list but in base of silicone resin
180°C
Secondary Smalted polyamide
C
Main All inorganic materials without additional soldering materials, glasses, mica, crystals, ceramics, porcelains.
>220°C
Secondary Polyamide, polytetrafluoroethylene (teflon), etc.

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