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January 2017

Metallized film capacitors with extended ranges

With metallized capacitors, thin layers of aluminium are vacuum-deposited on the insulating film as conducting electrodes. In the case of a breakdown, the short circuit current causes the thin metal layer to evaporate around the point of failure and an insulating area is formed. The capacitor remains intact (self-healing).
Metallized WIMA capacitors are available with Polyester or Polypropylene dielectric in PCM 2.5 mm to 52.5 mm. Capacitance values range from 100 pF to 680 µF and rated voltages from 50 VDC to 2000 VDC.
Metallized WIMA capacitors have been extended by several new voltage ranges e.g. 400 VDC for WIMA MKS 02, 800 VDC for WIMA MKP 2 or 850 VDC, 1600 VDC and 2000 VDC for WIMA MKP 4. In addition to that several new capacitance values have been introduced for WIMA MKS 4 and WIMA MKP 2.

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