The DB-PCN1PCN25A-18G100V/9XX from Rosnol is a DC Block with Frequency DC to 18 GHz, Insertion Loss 0.6 dB, Breakdown Voltage 100 V, VSWR 1.35:1, Return Loss 16.54 dB. Tags: Connectorized, Inner DC Block. More details for DB-PCN1PCN25A-18G100V/9XX can be seen below.