The DC-BLK-1G-SMA from Amphenol Procom is a DC Block with Frequency 50 MHz to 1.3 GHz, Insertion Loss 0.5 dB, Breakdown Voltage 400 V, Input Power (Avg) 100 W, VSWR 1.50:1. Tags: Module with Connectors, Inner-Outer DC Block. More details for DC-BLK-1G-SMA can be seen below.