The 2W9NCR-S from Renaissance Electronics Corporation is a RF & Microwave Isolator with Frequency 18.3 to 20.2 GHz, Average Power Forward 1 W, Average Power Reverse 0.5 W, Insertion Loss 0.8 dB, Isolation 17 dB. Tags: Microstrip Isolator. More details for 2W9NCR-S can be seen below.