The MC78M12CDTG is a Linear Voltage Regulator manufactured by ON Semiconductor. This device is a positive 12V, 500mA regulator. It provides a very low dropout voltage, which means it can maintain good regulation even with heavy loading. Its maximum operating temperature range is –55 to +150 °C, making it suitable for a wide variety of applications. It also features ultra-low quiescent current and fast transient response, making it ideal for battery-powered applications demanding longer operational life. Its voltage and current accuracy is also excellent, providing consistent output performance regardless of line, load and environmental conditions. Additionally, it provides overcurrent, overtemperature and short-circuit protection, ensuring reliable operation even during transient events. This makes it a great choice for advanced system designs with high reliability requirements.