The VFDI-177197 from VidaRF is a RF & Microwave Isolator with Frequency 17.7 to 19.7 GHz, Average Power Forward 1 W, Insertion Loss 0.7 dB, Isolation 18 dB, Operating Temperature -40 to 85 Degree C. Tags: Drop-In, Drop-In Isolator. More details for VFDI-177197 can be seen below.