The DB-PCA1PCA25A-27G50V/9XX from Rosnol is a DC Block with Frequency 100 MHz to 27 GHz, Insertion Loss 0.04 to 0.71 dB, Breakdown Voltage 50 V, VSWR 1.20:1, Return Loss 23.13 dB. Tags: Connectorized, Inner DC Block. More details for DB-PCA1PCA25A-27G50V/9XX can be seen below.