This part is a kind of semiconductor called CFM455H.

Function of this product has FILTERS.

Manufacturers : Murata Electronics

Image and pinout :

Some of the text within the PDF file :

FILTERS FOR COMMUNICATIONS EQUIPMENT RESIN MOLDED, MULTI-ELEMENT CFM/CFR455 SERIES The following lines of filters are high performance devices that achieve ultimate stopband attenuation through the use of multiple piezoelectric elements connected in ladder form. A few of the recommended applications for these filters include high class receivers, SSB communications equipment, pocket pagers and mobile radios. CFM455 9 Ceramic Elements CFR455 11 Elements Filters DIMENSIONS: mm CFM455 20.0 1.2 4 – .8 Dia. 10.5 4.0 CFR455 23.5 1.2 4 – .8 Dia. 10.5 4.0 ቢቤ ባብ 16.8 4.0 7.5 ቢቤ ባብ 20.0 4.0 7.5 Note: For safety purposes, connect the output of filters to the IF amplifier through a DC blocking capacitor. Avoid applying a direct current to the output of ceramic filters [ ... ]

CFM455H PDF Datasheet Download