Wima MKS4 Series Metallised Polyester Capacitors 10% – Wima MKS4G031003F00KS, A 400V 100nF 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 MKS4G031003F00KS 100nF ±10% 400V 10mm Pitch Polyester Capacitor