The QLB1250M120P5SCS from Q Microwave is a Band Pass Filter with Frequency 500 to 2000 MHz, Center Frequency 1250 MHz, Insertion Loss 2 dB, Rejection 30 dBc @ 200 MHz & 3700MHz, Power 0.1 W. Tags: Module with Connectors, Lumped Component Filter. More details for QLB1250M120P5SCS can be seen below.