Wima mks4 series metallised polyester capacitors 20 wima mks4o121003f00ms a 1000v 10nf 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 mks4o121003f00ms mks4 001uf 20 1000v radial polyester film capacitor