The CMIIM3140 from Quantic Corry is a RF & Microwave Isolator with Frequency 3.1 to 4 GHz, Bandwidth 900 MHz, Average Power Forward 30 W, Average Power Reverse 3 W, Insertion Loss 0.6 dB. Tags: Surface Mount, Microstrip Isolator. More details for CMIIM3140 can be seen below.