The QDB-10-40000-KKF from Qualwave is a DC Block with Frequency 0.01 to 40 GHz, Insertion Loss 0.5 dB, Breakdown Voltage 63 V, VSWR 1.30:1, Operating Temperature -55 to 125 Degree C. Tags: Connectorized. More details for QDB-10-40000-KKF can be seen below.