The CAP CER 12PF 5KV C0G/NP0 1812 is a type of ceramic capacitor with specific characteristics. It has a capacitance value of 12 pF and an operating voltage of 5000V (5kV). This capacitor falls under the C0G/NP0 category, which is known for its stable temperature characteristics and low loss factor. The 1812 designation refers to its metric dimensions, equivalent to the 4532 size in imperial measurements.