LM7812 12V 1.5A Voltage Regulator IC (TO-220 Package) for Arduino, Audio Amplifiers, Relays & Robotics Circuits

Deliver a clean, ripple-free +12V DC output to your electronic builds with the classic LM7812 Positive Linear Voltage Regulator IC in a heavy-duty TO-220 package. Capable of providing up to 1.5 A of steady output current, this industry-standard fixed regulator is the dependable backbone for DIY bench power supplies, automotive electronics, cooling fan controllers, and audio equipment.

Designed for drop-in simplicity, the LM7812 requires only two external decoupling capacitors to eliminate voltage ripple and unwanted noise. With integrated thermal shutdown, internal short-circuit current limiting, and safe-area protection, this IC safeguards your sensitive electronics from sudden power fluctuations and test-bench shorts.

Key Features

• Stable +12V DC Output: Delivers a tight ±4% regulated 12V rail from any 14.5V to 35V DC unregulated input source.

• High Output Current: Supplies up to 1.5 A continuous current (when fitted with a standard TO-220 heatsink).

• Comprehensive Fault Protection: Built-in thermal overload protection and short-circuit current limiting prevent chip burnout during overloads.

• Low Noise & High Ripple Rejection: Provides over 55 dB of power supply rejection, ensuring noise-free operation in audio circuits, op-amps, and sensitive analog modules.

• Breadboard & Heatsink Ready: Standard 3-pin through-hole footprint fits standard 2.54 mm breadboards, perfboards, and PCB heatsinks via its mounting screw tab.

Technical Specifications

Common Applications

• Powering 12V DC cooling fans, 12V relays, and solenoid coils

• Stepping down 24V or unregulated multi-cell battery packs to a stable 12V rail

• Audio preamps, mixers, and tone-control boards requiring low electrical noise

• Operational amplifier (Op-Amp) dual-rail power setups (paired with LM7912)

Package Includes

• 1 × LM7812 Fixed 12V Voltage Regulator IC (TO-220 Package)