The MFBP-00056CH from Marki Microwave is a Band Pass Filter with Frequency 21.85 to 33.37 GHz, Center Frequency 27000 MHz, Insertion Loss 1.33 dB, Return Loss 18.87 dB, Operating_Temperature -55 to 100 Degree C. Tags: Die, MMIC Filter. More details for MFBP-00056CH can be seen below.