The IMM503509AQS from 3Rwave is a RF & Microwave Isolator with Frequency 5.03 to 5.091 GHz, Average Power Forward 300 W, Average Power Reverse 100 W, Insertion Loss 0.4 to 0.5 dB, Isolation 17 to 22 dB. Tags: Drop-In Isolator. More details for IMM503509AQS can be seen below.