The 2H4NBI from Renaissance Electronics Corporation is a RF & Microwave Isolator with Frequency 1.8 to 2 GHz, Average Power Forward 50 W, Average Power Reverse 10 W, Insertion Loss 0.5 dB, Isolation 20 dB. Tags: Drop-In, Drop-In Isolator. More details for 2H4NBI can be seen below.