The ATC 100E Series from American Technical Ceramics is a RF Capacitor with Capacitance 1 to 5100 pF, Frequency 30 to 1000 MHz, Q Factor 10000, Dielectric Strength 250% of Min V, 120 % of High V, ESR 0.01 to 0.266 Ohms. Tags: Ceramic Capacitors, MLCC. More details for ATC 100E Series can be seen below.