This part is a kind of semiconductor called 78L24.

Function of this product has Positive Voltage Regulator.

Manufacturers : Wing Shing Computer Component

Image and pinout :

Some of the text within the PDF file :

D D D D 78L24D D 3-Terminal Regulators Output Current up to 100 mA No External Components Internal Thermal-Overload Protection Internal Short-Circuit Current Limiting Provided Pb-Free packages from the end of 2004 Positive-Voltage Regulators description This series of fixed-voltage integrated-circuit voltage regulators is designed for a wide range of applications. These applications include on-card regulation for elimination of noise and distribution problems associated with single-point regulation. In addition, they can be used with power-pass elements to make high-current voltage regulators. One of these regulators can deliver up to 100 mA of output current. The internal limiting and thermal-shutdown features of these regulators make them essentially immune to overload. When used as a [ ... ]

78L24 PDF Datasheet Download