The PE8027 from Pasternack Enterprises Inc is a Limiter with Frequency 11 to 18 GHz, Flat Leakage 0.03 W, Flat Leakage 16 dBm, Peak Flat Leakage 23 dBm, Input Power 30 dBm. Tags: Module with Connectors, PIN-PIN Diode. More details for PE8027 can be seen below.