The QMC-CRYOTEE-0.240K from Quantum Microwave is a Bias Tee with Frequency 0.2 to 40 GHz, Max. Voltage 35 V, Max Current 0.25 A, Insertion Loss 0.75 to 1.5 dB, Return Loss -20 to -15 dB. Tags: Module with Connector, Cryogenic. More details for QMC-CRYOTEE-0.240K can be seen below.