The ISA039043AA from 3Rwave is a RF & Microwave Isolator with Frequency 390 to 430 MHz, Average Power Forward 200 W, Average Power Reverse 10 W, Insertion Loss 0.3 to 0.4 dB, Isolation 18 to 21 dB. Tags: Drop-In Isolator. More details for ISA039043AA can be seen below.