To ensure low leakage current and low dielectric absorption, the feed back capacitor should be made of a suitable dielectric material such as poly styrene, polypropylene, or Teflon.
3
聚苯乙烯薄膜介质扩展箔电容器详细规范。单向端接矩形非金属壳。全面附加评定级。
Detail specification for polystyrene film dielectric capacitors, extended foil - Rectangular non-metallic case, unidirectional terminations - Full plus additional assessment level.