The HLM-40PSM from Marki Microwave is a Power Limiter with Frequency DC to 40 GHz, Input Power P1 dB 14 dBm, Peak Input Power 39.78 dBm, Peak Input Power 9.5 W, Limited Output Power 33.98 dBm. Tags: Surface Mount, Schottky Diode. More details for HLM-40PSM can be seen below.