The CMIIM5258 from Quantic Corry is a RF & Microwave Isolator with Frequency 5.2 to 5.8 GHz, Bandwidth 600 MHz, Average Power Forward 20 W, Average Power Reverse 3 W, Insertion Loss 0.5 dB. Tags: Surface Mount, Microstrip Isolator. More details for CMIIM5258 can be seen below.