This part is a kind of semiconductor called BF49A1M.

Function of this product has SAW filter.

Manufacturers : SHOULDER ELECTRONICS

Image and pinout :

Some of the text within the PDF file :

1.SCOPE SHOULDER’ s SAW filter series have broad line up products meeting all broadcast standard including NTSC,PAL and SECAM systems. These filters are composed of two interdigital transducers on a single-crystal. piezoelectrical chip. they are used in electronic equipments such as TV and so on. 2.Construction 2.1 Dimension and materials Manufacturer’ s name : SHOULDER ELECTRONICS Co. LTD(CHINA) Type : BF49A1M 0: year(0,1,2,3,4,5,6,7,8,9) B:product in this quarter(A:1~3,B:4~6,C:7~9,D:10~12) 2.2. Circuit construction, measurement circuit 3.Characteristics Standard atmospheric conditions Unless otherwise specified , the standard rang of atmospheric conditions for making measurements and tests is as follows; Ambient temperature : 15¡æ to 35¡æ Relative humidity : 25% to 85% Air pr [ ... ]

BF49A1M PDF Datasheet Download