This part is a kind of semiconductor called 78L08.

Function of this product has Positive-Voltage Regulators.

Manufacturers : Wing Shing Computer Components

Image and pinout :

Some of the text within the PDF file :

78L08 D D D D D D 3-Terminal Regulators Output Current up to 100 mA No External Components Internal Thermal-Overload Protection Internal Short-Circuit Current Limiting Direct Replacements for Fairchild µA78L0 8 Series Positive-Voltage Regulators O C I TO-92 78L08ACZ 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 [ ... ]

78L08 PDF Datasheet Download