The MFBP-00011PSM from Marki Microwave is a Band Pass Filter with Frequency 2.30 to 8.05 GHz, Center Frequency 4000 MHz, Insertion Loss 1.24 dB, Upper Rejection 35 to 52 dB, Lower Rejection 35 to 86 dB. Tags: Surface Mount, MMIC Filter. More details for MFBP-00011PSM can be seen below.