The ceramic capacitor CAP CER 39PF 3KV C0G/NP0 1808 has a capacitance value of 39 pF with an accuracy of ±10. It is designed to operate at high voltages up to 3000V or 3kV and features a metric case size of 1808. This capacitor belongs to the C0G and NP0 specifications, indicating its temperature-stable and precise capacitance characteristics.