The EMA8J2510P20F70D from ECHO Microwave is a Band Pass Filter with Frequency 2.5 to 2.52 GHz, Insertion Loss 3 dB, Rejection 70 dB @ 2410 MHz, Return Loss 15 dB. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for EMA8J2510P20F70D can be seen below.