Wima MKS4 Series Metallised Polyester Capacitors 10% – Wima MKS4O141007E00KS, A 1000V 1000nF industry standard metallised polyester (PET) capacitor. The capacitor has a high volume/capacitance ratio and is suitable for general purpose DC applications such as by-pass, blocking, coupling and decoupling, timing. Wima MKS4O141007E00KS MKS4 1uF ±10% 1000V Radial Polyester Film Capacitor