Wima mks4 series metallised polyester capacitors 20 wima mks4o111002b00ms a 1000v 1nf industry standard metallised polyester pet capacitor the capacitor has a high volumecapacitance ratio and is suitable for general purpose dc applications such as by pass blocking coupling and decoupling timing wima mks4o111002b00ms mks4 1000pf 20 1000v radial polyester film capacitor