![]() The maximum voltage rating of polypropylene capacitors is 400 Kv. Polypropylene capacitors are more resistant to moisture as compared to polyester film capacitors, so they don’t require any safety coating also these capacitors are less dependent on frequency and temperature but their operating frequency is 100 KHz & maximum operating temperature is around 105° C. These capacitors are very accurate and stable with less leakage. These capacitors are available in two configurations like film or foil and metalized which range from 100 pF to 50 uF. The capacitor which uses a non-polar organic polymer material like Polypropylene as a dielectric is known as polypropylene capacitors. These capacitors are used where temperature stability & low loss are required for timing & filtering circuits within a harsh environment. The Polycarbonate film in this capacitor simply provides high tolerance to increase its reliability. The operating temperature of this capacitor ranges from -55° to +125° C. These capacitors offer very less loss & very high stability. The dielectric material used in this resistor is polycarbonate and it is manufactured in both film and metalized structures. These capacitors work well in high temperatures & harsh and environments within the range of 100 pF to 20 uF range. Polycarbonate capacitors have very high quality, high accuracy, are expensive, and have very less leakage across a dielectric. These are used in general purpose applications which have less frequency and temperature. These capacitors offer nearly zero change within their capacitance once operating within their temperature range of about 85° C. The operating range of these capacitors ranges from 10 pF to 1 uF.
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