The QDI2525X from Qualwave is a RF & Microwave Isolator with Frequency 350 to 4000 MHz, Bandwidth 770 MHz, Average Power Forward 250 W, Average Power Reverse 10 to 100 W, Insertion Loss 0.25 to 0.65 dB. Tags: Drop-In, Drop-In Isolator. More details for QDI2525X can be seen below.