The ISA038040AA from 3Rwave is a RF & Microwave Isolator with Frequency 380 to 400 MHz, Average Power Forward 300 W, Average Power Reverse 80 W, Insertion Loss 0.3 to 0.4 dB, Isolation 18 to 22 dB. Tags: Drop-In Isolator. More details for ISA038040AA can be seen below.
