The MFB-5350CH from Marki Microwave is a Band Pass Filter with Frequency 40 to 67 GHz, Center Frequency 48600 MHz, Insertion Loss 0.78 to 3 dB, Upper Rejection 25 to 30 dB, Lower Rejection 40 to 50 dB. Tags: Die, MMIC Filter. More details for MFB-5350CH can be seen below.