The DB-PCN1PCN25A-18G50V/9XX from Rosnol is a DC Block with Frequency DC to 18 GHz, Insertion Loss 0.6 dB, Breakdown Voltage 50 V, Power Rating 20 W, VSWR 1.35:1. Tags: Connectorized, Inner DC Block. More details for DB-PCN1PCN25A-18G50V/9XX can be seen below.