The T1AZ4 from Sonoma Scientific is a RF & Microwave Isolator with Frequency 1.61 to 4.627 GHz, Average Power 5 to 10 W, Average Power Forward 5 to 10 W, Insertion Loss 0.5 dB, Isolation 20 dB. Tags: Drop-In, Drop-In Isolator. More details for T1AZ4 can be seen below.