The STL412 from Crane Aerospace & Electronics is a Limiter with Frequency 4 to 8 GHz, CW Flat Leakage 20 dBm, CW Flat Leakage 0.1 W, Flat Leakage 0.1 W, Flat Leakage 20 dBm. Tags: Module with Connectors, Surface Mount. More details for STL412 can be seen below.