The SiMS35/1R2-5W3 from Sainty-Tech Communications Limited is a Band Pass Filter with Frequency 34.4 to 35.6 GHz, Center Frequency 35 GHz, Insertion Loss 2.3 dB, Rejection 30 dB @33.3GHz&37GHz, 35 dB @33GHz&37.4GHz, 40 dB @DC~25GHz, Upper Rejection 30 to 35 dB. Tags: Surface Mount, Cavity Filter. More details for SiMS35/1R2-5W3 can be seen below.