The CMIIM4045 from Quantic Corry is a RF & Microwave Isolator with Frequency 4 to 4.5 GHz, Bandwidth 500 MHz, Average Power Forward 30 W, Average Power Reverse 3 W, Insertion Loss 0.4 dB. Tags: Surface Mount, Microstrip Isolator. More details for CMIIM4045 can be seen below.