The SRFBF-1BJ1J-GPBA from Suntsu Electronics Inc is a Band Pass Filter with Frequency 1550 to 1610 MHz, Bandwidth 60 MHz, Center Frequency 1580 MHz, Insertion Loss 1.9 dB, Rejection 8 to 35 dB. Tags: Ceramic, Surface Mount, Ceramic Filter. More details for SRFBF-1BJ1J-GPBA can be seen below.