The ZVBP-38500-K+ from Mini Circuits is a Band Pass Filter with Frequency 37 to 40 GHz, Insertion Loss 2.1 to 4 dB, Upper Rejection 80 to 116 dB, Lower Rejection 80 to 127 dB, Power 2.5 W. Tags: Module with Connectors, Cavity Filter. More details for ZVBP-38500-K+ can be seen below.