The INA3442 from Stellant Systems is a RF & Microwave Isolator with Frequency 3.4 to 4.2 GHz, Average Power Forward 25 W, Average Power Reverse 1 W, Insertion Loss 0.4 dB, Isolation 23 dB. Tags: Module with Connector, Coaxial Isolator. More details for INA3442 can be seen below.