This part is a kind of semiconductor called 78M05.
Function of this product has 3-Terminal 0.5A Positive Voltage Regulator.
Manufacturers : Fairchild Semiconductor
Image and pinout :
Some of the text within the PDF file :
KA78M05 / LM78M05 / MC78M05 — 3-Terminal 0.5 A Positive Voltage Regulator January 2015 KA78M05 / LM78M05 / MC78M05 3-Terminal 0.5 A Positive Voltage Regulator Features Description • Output Current up to 0.5 A • Output Voltages of 5 V • Thermal Overload Protection • Short-Circuit Protection • Output Transistor Safe Operating Area (SOA) Protection The KA78M05 / LM78M05 / MC78M05 series of threeterminal positive regulators is available in the TO-220 / DPAK packages, making it useful in a wide range of applications. TO-220 GND 1 D-PAK GND 1 1. Input 2. GND 3. Output Ordering Information(1) Product Number KA78M05TU KA78M05RTM MC78M05CDTX LM78M05CT Package TO-220 (Dual Gauge) D-PAK TO-220 (Single Gauge) Packing Method Rail Tape and Reel Rail Note: 1. Refer to below figur [ ... ]