The SiMS36/3-5W2 from Sainty-Tech Communications Limited is a Band Pass Filter with Frequency 34.5 to 37.5 GHz, Center Frequency 36 GHz, Insertion Loss 1.5 dB, Rejection 30 dB @32.5GHz&40GHz, 40 dB @31GHz&42.5GHz, 50 dB @DC~18GHz, Upper Rejection 30 to 40 dB. Tags: Surface Mount, Cavity Filter. More details for SiMS36/3-5W2 can be seen below.