The T4YZ1 from Sonoma Scientific is a RF & Microwave Isolator with Frequency 4.5 to 6.5 GHz, Average Power 100 W, Average Power Forward 100 W, Insertion Loss 0.8 dB, Isolation 15 dB. Tags: Drop-In, Drop-In Isolator. More details for T4YZ1 can be seen below.