This is a 0.056 microfarad, ceramic capacitor with an operating voltage of 1 kilovolt and a capacitance tolerance of ±10%. It has a metric case size of 2220 and belongs to the X7R temperature coefficient category. The part number is CAP CER 0.056UF 1KV X7R 2220 - 0.056 µF ±10 1000V (1kV) Ceramic Capacitor X7R 2220 (5750 Metric).