The ATC 500S Series from American Technical Ceramics is a RF Capacitor with Capacitance 0.1 to 10 pF, Q Factor 1000, Dielectric Strength 200% of Rated Voltage, Voltage (WVDC) 50 to 100 V. Tags: Ceramic Capacitors, MLCC. More details for ATC 500S Series can be seen below.