The DIB1542L(R)1 from Partron is a RF & Microwave Isolator with Frequency 1.525 to 1.559 GHz, Average Power Forward 150 to 200 W, Insertion Loss 0.3 dB, Isolation 20 dB, Return Loss 20 dB. Tags: Drop-In, Drop-In Isolator. More details for DIB1542L(R)1 can be seen below.