A42 7912 Negative Voltage Regulator, -12V 1.5A Fixed Output, TO-220 Package (L7912 / MC7912)

The 7912 is a robust monolithic integrated circuit designed to provide a stable -12V fixed output. Housed in a TO-220 package, it is an essential component for creating dual-rail (split) power supplies, which are commonly required for high-quality audio equipment and operational amplifier (Op-Amp) circuits.

Key Technical Specifications

• Function: Fixed Negative Voltage Regulator

• Output Voltage: -12V (Fixed)

• Output Current: Up to 1.5A (with adequate heat sinking)

• Input Voltage: -14.5V to -35V (Maximum)

• Package Type: TO-220 (Through-hole)

• Protection Features: Internal thermal overload protection and short-circuit current limiting.

Applications

• Dual Power Supplies: Combined with a 7812 regulator to provide $+12\text{V}$, $0\text{V}$, and $-12\text{V}$ rails.

• Operational Amplifiers: Providing the negative rail for Op-Amps like the TL072 or LM358.

• Analog Audio Gear: Powering mixers, synthesizers, and signal processors that require symmetrical voltage.

• Industrial Controls: Negative bias voltage for specialized sensor systems.

Why Choose the 7912?

• Simplicity: No external resistors are needed to set the voltage; it works "out of the box" with just a few decoupling capacitors.

• High Reliability: Built-in protection ensures the chip survives accidental shorts or overheating.

• Standard Footprint: The TO-220 package is easy to mount to heat sinks for high-current applications.

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