The JI2D0380T0400UM8 from JQL Electronics is a RF & Microwave Isolator with Frequency 380 to 400 MHz, Average Power Forward 150 W, Average Power Reverse 80 W, Insertion Loss 0.5 dB, Isolation 50 dB. Tags: Drop-In, Drop-In Isolator. More details for JI2D0380T0400UM8 can be seen below.