This is a small, high-voltage ceramic capacitor with the designation CAP CER 0.27UF 200V X7R 1210. It has a capacitance of 0.27 microfarads and operates at a voltage of up to 200 volts. The X7R classification indicates that it has a moderate temperature coefficient, making it suitable for use in a variety of applications. The capacitor is packaged in the 1210 (3225 metric) size.