The ATC 600L Series from American Technical Ceramics is a RF Capacitor with Capacitance 0.1 to 27 pF, Frequency 500 to 1000 MHz, Q Factor 2000, Dielectric Strength 2.5 x WVDC, ESR 0.054 to 0.086 Ohms. Tags: Ceramic Capacitors, MLCC. More details for ATC 600L Series can be seen below.