The BP37R2313S100B from Sangshin is a Band Pass Filter with Frequency 2263.5 to 2363.5 MHz, Bandwidth 50 MHz, Center Frequency 2313.5 MHz, Insertion Loss 4.5 dB, Lower Rejection 60 dB. Tags: Surface Mount, Dielectric Filter. More details for BP37R2313S100B can be seen below.