The EMA6F2442P85D50B from ECHO Microwave is a Band Pass Filter with Frequency 2.4 to 2.49 GHz, Insertion Loss 2 dB, Rejection 50 dB @ 2580~2625 MHz, Return Loss 14 dB. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for EMA6F2442P85D50B can be seen below.