The CAP CER 47PF 4KV C0G/NP0 1812 is a specific type of ceramic capacitor with the following characteristics: capacitance value of 47 pF, tolerance of ±10%, maximum voltage rating of 4000V or 4kV, and a case size of 1812 (also known as metric size 4532). It belongs to the C0G/NP0 class, which is often used for its stability over temperature.