The specified capacitor is a CAP CER 390PF 500V C0G/NP0 type with the metric code 1808, boasting a capacitance of 390 pF ±2 and withstanding a maximum voltage of 500V. It features a ceramic material with a C0G or NP0 (1B) classification, further characterized by its 1808 (4520 Metric) designation.