The CAP CER 3300PF 1KV X7R 1812 is a type of ceramic capacitor with a capacitance value of 3300 picofarads. It has a ±5% tolerance and operates at a voltage rating of 1000 volts (1kV). This capacitor conforms to the X7R temperature coefficient specification, indicating that it can handle temperature fluctuations without compromising its performance. The 1812 case size corresponds to the metric designation of 4532.