This part is a kind of semiconductor called 78M24.

Function of this product has 3-TERMINAL POSITIVE VOLTAGE REGULATOR.

Manufacturers : New Japan Radio

Image and pinout :

Some of the text within the PDF file :

NJM78M00 3-TERMINAL POSITIVE VOLTAGE REGULATOR GENERAL DESCRIPTION The NJM78M00 series of 3-Terminal Positive Voltage Regulators is constructed using the New JRC Planar epitaxial process. These regulators employ internal current-limiting, thermal-shutdown and safe-area compensation making them essentially indestructible. If adequate heat sinking is provided, they can deliver in excess of 500mA output current. They are intended as fixed voltage regulation in a wide range of applications including local or on-card regulation for elimination of noise and distribution problems associated with single point regulation. In addition to use as fixed voltage regulators, these devices can be used with external components to obtain adjustable output voltages and currents. FEATURES • Internal Sho [ ... ]

78M24 PDF Datasheet Download