The ADB-40KMF-I from Atlantic Microwave is a DC Block with Frequency 10 MHz to 40 GHz, Insertion Loss 0.75 dB, Breakdown Voltage 200 V, VSWR 1.45:1, Operating Temperature -65 to 125 Degree C. Tags: Module with Connectors, Inner DC Block. More details for ADB-40KMF-I can be seen below.