Specifications: 1) Operating temperature range: -25°C to +85°C 2) Working voltage: DC 50V, 500V 3) With standing voltage: 3 times of working voltage. 4) Capacitance: be measured at 20±2C, with 1±0.1MHz and 5Vrms (max.) 5) Capacitance tolerance: ±0.25PF(C), ±0.5PF(D), ±0;5%(J), ±10%(K)