This part is a kind of semiconductor called S7805PI.

Function of this product has Fixed Voltage Regulator.

Manufacturers : AUK corp

Image and pinout :

Some of the text within the PDF file :

Semiconductor S78xxPI Fixed Voltage Regulator Descriptions The S78xx series are three-terminal positive regulators providing over 1A output current with internal current limiting, thermal shutdown and safe area protection. These regulators are useful in a wide range of applications. Although they are just fixed voltage regulators, the S78xx series can be used with external components to obtain adjustable voltages and currents. Features • Internal Short Circuit Current Limiting • Maximum Output Current (1A Max.) • Thermal Overload Protection • Output Transistor Safe Area Protection Ordering Information Type NO. S78xxPI Marking S78□□PI Package Code TO-220F □□:Voltage Code (05:5V, 06:6V, 08:8V, 09:9V, 10:10V,12:12V,15:15V,24:24V) Outline Dimensions unit : mm PIN Conne [ ... ]

S7805PI PDF Datasheet Download