The QDI2528C from Qualwave is a RF & Microwave Isolator with Frequency 2700 to 6200 MHz, Bandwidth 3500 MHz, Average Power Forward 100 W, Average Power Reverse 20 W, Insertion Loss 0.4 to 0.8 dB. Tags: Drop-In, Drop-In Isolator. More details for QDI2528C can be seen below.