This part is a kind of semiconductor called AN211A.
Function of this product has FIFELD EFFECT TRANSISTORS.
Manufacturers : Motorola
Image and pinout :
Some of the text within the PDF file :
MOTOROLA Freescale Semiconductor, Inc. SEMICONDUCTOR APPLICATION NOTE NOTE: The theory in this application note is still applicable, but some of the products referenced may be discontinued. Order this document by AN211A/D AN211A Field Effect Transistors in Theory and Practice INTRODUCTION There are two types of field-effect transistors, the Junction Field-Effect Transistor (JFET) and the “Metal-Oxide Semiconductor” Field-Effect Transistor (MOSFET), or Insulated-Gate Field-Effect Transistor (IGFET). The principles on which these devices operate (current controlled by an electric field) are very similar the primary difference being in the methods by which the control element is made. This difference, however, results in a considerable difference in device ch [ ... ]