This part is a kind of semiconductor called A1202.

Function of this product has (A1201 - A1204) Continuous-Time Bipolar Switch Family.

Manufacturers : Allegro MicroSystems

Image and pinout :

Some of the text within the PDF file :

A1201, A1202, A1203, and A1204 Continuous-Time Bipolar Switch Family Features and Benefits ▪ Continuous-time operation ▫ Fast power-on time ▫ Low noise ▪ Stable operation over full operating temperature range ▪ Reverse battery protection ▪ Solid-state reliability ▪ Factory-programmed at end-of-line for optimum performance ▪ Robust EMC performance ▪ High ESD rating ▪ Regulator stability without a bypass capacitor Description The Allegro® A1201, A1202, A1203, and A1204 Hall-effect bipolar switches are next-generation replacements and extension of the popular Allegro A3134, A3133, and A3132 bipolar switch product line. Overall, the A120x family, produced with BiCMOS technology, consists of continuous-time devices that feature fast power-on time and low-noise operation. [ ... ]

A1202 PDF Datasheet Download