A ceramic capacitor with the part number CAP CER 18PF 1KV C0G/NP0 1808 has been identified. It features an 18 picofarad capacitance value with a tolerance of ±10% and operates within a voltage range of up to 1000V (1kV). The capacitor is classified as C0G, also known as NP0 (1B), and is packaged in the metric size 1808.