The ACLM4540 from Cobham Signal & Control Solutions is a Limiter with Frequency 2 to 8 GHz, CW Flat Leakage 17 dBm, CW Flat Leakage 0.05 W, Flat Leakage 0.05 W, Flat Leakage 17 dBm. Tags: Module with Connectors, PIN Diode. More details for ACLM4540 can be seen below.