The YXMI301C 3.5-4.5GHz from Talee Microwave Limited is a RF & Microwave Isolator with Frequency 3.5 to 4.5 GHz, Average Power Forward 50 W, Average Power Reverse 2 W, Peak Power Forward 50 W, Insertion Loss 0.4 dB. Tags: Surface Mount, Microstrip Isolator. More details for YXMI301C 3.5-4.5GHz can be seen below.