This part is a kind of semiconductor called SS495A.

Function of this product has Miniature Ratiometric Liner.

Manufacturers : Honeywell Sensing

Image and pinout :

Some of the text within the PDF file :

Solid State Sensors Miniature Ratiometric Linear SS490 Series MRL (Miniature Ratiometric Linear) sensors have a ratiometric output voltage, set by the supply voltage. It varies in proportion to the strength of the magnetic field. A new Hall effect integrated circuit chip provides increased temperature stability and sensitivity. Laser trimmed thin film resistors on the chip provide high accuracy (null to ±3%, sensitivity up to ±3%) and temperature compensation to reduce null and gain shift over temperature. The quad Hall sensing element minimizes the effects of mechanical or thermal stress on the output. The positive temperature coefficient of the sensitivity (+0.02%/°C typical) helps compensate for the negative temperature coefficients of low cost magnets, providing a robust design over [ ... ]

SS495A PDF Datasheet Download