The QRB3550M3P7SSM from Q Microwave is a Band Pass Filter with Frequency 3500 to 3600 MHz, Center Frequency 3550 MHz, Insertion Loss 4.5 dB, Rejection 30 dBc @ 3475 MHz & 3625 MHz50 dBc @ 3400 MHz & 3700 MHz, Power 0.1 W. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for QRB3550M3P7SSM can be seen below.