The DB-PCT1PCT25A-18G100V/9XX from Rosnol is a DC Block with Frequency 10 MHz to 18 GHz, Insertion Loss 0.75 dB, Breakdown Voltage 100 V, VSWR 1.35:1, Return Loss 16.54 dB. Tags: Connectorized, Inner DC Block. More details for DB-PCT1PCT25A-18G100V/9XX can be seen below.