The EI1275F1475DA from ECHO Microwave is a RF & Microwave Isolator with Frequency 1.27 to 1.47 GHz, Average Power Forward 50 W, Insertion Loss 0.4 dB, Isolation 20 dB, Operating Temperature -20 to 85 Degree C. Tags: Drop-In, Drop-In Isolator. More details for EI1275F1475DA can be seen below.