The 2J9ND from Renaissance Electronics Corporation is a RF & Microwave Isolator with Frequency 17.5 to 20 GHz, Average Power Forward 10 W, Average Power Reverse 5 W, Insertion Loss 0.7 dB, Isolation 18 dB. Tags: Drop-In, Drop-In Isolator. More details for 2J9ND can be seen below.