电子元器件质量评估协调体系。分规范。直流金属化聚碳酸酯薄膜固定电介质电容器。

Harmonized system of quality assessment for electronic components. sectional specification. fixed metallized polycarbonate film dielectric d. c. capacitors.

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PPS 为非感应式，用聚丙烯电介质和镀金属聚丙烯薄膜串联以铝箔为电极绕制而成，导线采用镀锡铜包线，采用环氧树脂包封。

PPS are non-inductively wound with polypropylene, dielectric and metallized polypropylene film in series with aluminum foil for electrodes using copper-clad steel leads anf epoxy resin coating.

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其他气体也可以穿过聚合物薄膜 ， 但是它们的电介质常数和水蒸汽 的电介质常数相比可以忽略不计 （80 >> 2….3） 。

Other gases can also penetrate the polymer film, but their dielectric constant is negligible compared to water vapour (80 >> 2…3).

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