View mc7812 datasheet:

www.fairchildsemi.com MC78XX/LM78XX/MC78XXA 3-Terminal 1A Positive Voltage Regulator Features Description • Output Current up to 1A The MC78XX/LM78XX/MC78XXA series of three • Output Voltages of 5, 6, 8, 9, 10, 12, 15, 18, 24V terminal positive regulators are available in the • Thermal Overload Protection TO-220/D-PAK package and with several fixed output • Short Circuit Protection voltages, making them useful in a wide range of • Output Transistor Safe Operating Area Protection applications. Each type employs internal current limiting, thermal shut down and safe operating area protection, making it essentially indestructible. If adequate heat sinking is provided, they can deliver over 1A output current. Although designed primarily as fixed voltage regulators, these devic