The 891-210220-451 from M2 Global Technology is a RF & Microwave Isolator with Frequency 2.1 to 2.2 GHz, Average Power Forward 150 W, Average Power Reverse 150 W, Insertion Loss 0.28 dB, Isolation 21 dB. Tags: Drop-In, Drop-In Isolator. More details for 891-210220-451 can be seen below.