polystyrene (PS)
Polystyrene(PS) is a clear, transparent material characterized by high hardness. It has the DIN/VDE designation 3Y.
The material polystyrene, which can be injection molded or thermoplastic foam molded, is found, among other things, as a viewing window in measuring instruments and displays or colored as housings.
Polystyrene can only be used at temperatures up to 65 °C; the temperature coefficient is linear to slightly negative. Film capacitors with metal foil and dielectric film have the marking"KS".