MC78M12ABT 12V 500mA Voltage Regulator

Description

Marked "MC78M12ABT" on the package with ON Semiconductor's logo, this is ON Semiconductor's MC78M12ABT (from the MC78M00A series), a 3-terminal positive linear voltage regulator. It is engineered to provide a fixed $12\text{ V}$ output with tight voltage tolerance ( $\pm 2\%$ ) and deliver up to $500\text{ mA}$ of continuous output current when paired with an adequate heat sink.

The MC78M12 series incorporates internal thermal overload protection, short-circuit current limiting, and output transistor safe-area compensation, making it highly reliable and resistant to electrical overstress.

Key Specifications

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Output Voltage ( $V_{OUT}$ ): $12\text{ V}$ (Fixed, $\pm 2\%$ tolerance)

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Input Voltage Max ( $V_{IN}$ ): $35\text{ V}$

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Output Current ( $I_{OUT}$ ): $500\text{ mA}$ ( $0.5\text{ A}$ ) max