The PE8020 from Pasternack Enterprises Inc is a Limiter with Frequency 2 to 4 GHz, Flat Leakage 0.07 W, Flat Leakage 18.5 dBm, Peak Flat Leakage 23 dBm, Peak Flat Leakage 0.19 W. Tags: Module with Connectors, PIN-PIN Diode. More details for PE8020 can be seen below.