This part is a kind of semiconductor called 78M05.

Function of this product has 3-TERMINALS 0.5A POSITIVE VOLTAGE REGULATOR.

Manufacturers : Unisonic Technologies

Image and pinout :

78M05 image and datasheet pinout

Some of the text within the PDF file :

UNISONIC TECHNOLOGIES CO., LTD 78MXX LINEAR INTEGRATED CIRCUIT 3-TERMINAL 0.5A POSITIVE VOLTAGE REGULATOR 1 TO-126 1 TO-126C  DESCRIPTION The UTC 78MXX family is monolithic fixed voltage regulator integrated circuit. They are suitable for applications that required supply current up to 0.5A. 1 TO-220 1  FEATURES * Output Current up to 0.5A * Fixed Output Voltage of 5V, 6V, 8V, 9V, 12V, 15V and18V Available * Thermal Overload Shutdown Protection * Short Circuit Current Limiting * Output Transistor SOA Protection 1 TO-92  ORDERING INFORMATION Ordering Number Lead Free Halogen Free 78MXXL-T60-K 78MXXG-T60-K 78MXXL-T6C-K 78MXXG-T6C-K 78MXXL-T92-B 78MXXG-T92-B 78MXXL-T92-K 78MXXG-T92-K 78MXXL-TA3-T 78MXXG-TA3-T 78MXXL-TF3-T 78MXXG-TF3-T Package TO-126 TO-12 [ ... ]

78M05 PDF Datasheet Download

2017/10/08 18:10 2017/10/08 18:10