The EMA4E4930P40C8DMMCXB from ECHO Microwave is a Band Pass Filter with Frequency 4.91 to 4.95 GHz, Insertion Loss 1.5 dB, Rejection 8 dB @ 4830 to 4870 MHz, Return Loss 15 dB. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for EMA4E4930P40C8DMMCXB can be seen below.