The LS0540P40B from Herotek is a Limiter with Frequency 500 MHz to 4 GHz, Flat Leakage 0.025 to 0.12 W, Flat Leakage 14 to 21 dBm, CW Input Power 40 W, CW Input Power 46 dBm. Tags: Module with Connectors. More details for LS0540P40B can be seen below.