The DBBF1002100380A from Qotana is a Band Pass Filter with Frequency 2.1 to 3.8 GHz, Bandwidth 1700 MHz, Insertion Loss 1 dB, Rejection 45 dB, Power 15 W. Tags: Module with Connectors, Suspended Substrate Filter. More details for DBBF1002100380A can be seen below.