This part is a kind of semiconductor called CJ7805.

Function of this product has Three Terminal Positive Voltage Regulator.

Manufacturers : Inchange Semiconductor

Image and pinout :

Some of the text within the PDF file :

isc Product Specification isc Three Terminal Positive Voltage Regulator CJ7805 FEATURES ·Output current in excess of 1.5A ·Output voltage of 5V ·Internal thermal overload protection ·Output transition Safe-Area compensation ·100% avalanche tested ·Minimum Lot-to-Lot variations for robust device performance and reliable operation ABSOLUTE MAXIMUM RATINGS(Ta=25℃) SYMBOL PARAMETER RATING UNIT Vi DC input voltage 35 V Io Output current Ptot Power dissipation internally limited internally limited TOP Operating junction temperature 0~150 ℃ Tstg Storage temperature -55~150 ℃ THERMAL CHARACTERISTICS SYMBOL PARAMETER Rth j-c Rth j-a Thermal Resistance, Junction to Case Thermal Resistance,Junction to Ambient MAX 5 65 UNIT ℃/W ℃/W isc website：www.iscsemi.co [ ... ]

CJ7805 PDF Datasheet Download