The QCI4040A from Qualwave is a RF & Microwave Isolator with Frequency 1500 to 3600 MHz, Bandwidth 1800 MHz, Average Power Forward 100 W, Average Power Reverse 30 to 100 W, Insertion Loss 0.6 to 0.7 dB. Tags: Module with Connector, Coaxial Isolator. More details for QCI4040A can be seen below.