The DB-K1K25A-40G50V/9XX-9X from Rosnol is a DC Block with Frequency 10 MHz to 40 GHz, Insertion Loss 0.8 dB, Breakdown Voltage 50 V, VSWR 1.20:1, Return Loss 20.83 dB. Tags: Connectorized, Inner DC Block. More details for DB-K1K25A-40G50V/9XX-9X can be seen below.