The EMA8F2535P70D45D from ECHO Microwave is a Band Pass Filter with Frequency 2.5 to 2.57 GHz, Insertion Loss 2 dB, Rejection 45 dB @ 2620 to 2690 MHz, Return Loss 15 dB. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for EMA8F2535P70D45D can be seen below.