SparkFun
Voltage Regulator - 12V
The L7812 is a three-terminal positive voltage regulator with a fixed 12V output. It provides stable local regulation with built-in protection against overcu...
The L7812 is a three-terminal positive voltage regulator with a fixed 12V output. It provides stable local regulation with built-in protection against overcurrent, thermal overload, and short circuits, making it a reliable choice for powering 12V components in your projects.
With a maximum output current of 1.5A, this regulator is well-suited for powering sensors, relay modules, LED strips, and other 12V peripherals from a higher-voltage supply.
Key Features
- Fixed 12V Output – Stable regulated voltage for consistent performance
- 1.5A Maximum Current – Sufficient for most common 12V loads
- Thermal Overload Protection – Automatically shuts down if the junction temperature is exceeded
- Short Circuit Protection – Built-in current limiting prevents damage from output faults
- Output Transition SOA Protection – Safe operating area protection during load changes
Specifications
- IC: L7812
- Output Voltage: 12V (fixed)
- Output Current: 1.5A max
- Package: TO-220
Ideal For
- Powering 12V sensors and relay modules
- Regulated supply for LED strips and motor drivers
- Bench power supplies and prototyping
- Any project requiring a stable 12V rail from a higher-voltage source
Package Contents
- 1× L7812 Voltage Regulator (TO-220)
Resources
Jargon buster
Plain-language definitions for the technical terms used above.
- LED
- A light-emitting diode is a small electronic component that lights up when current flows through it in the correct direction. In this kit, LEDs create the flashing effect, so polarity and correct soldering matter for the project to work.
- Short circuit protection
- A safety feature that helps protect the device if its output or wiring is accidentally connected in a way that causes excessive current flow. This matters in automation wiring because mistakes or damaged cables can otherwise destroy the sensor or power supply.
Find this product in
Brands
TO-220 Voltage Regulator Datasheet
Datasheet · 1.8 MB · Click any page to view full size
Supplier page — sparkfun.com
Supplier Description · 486.2 KB · Click any page to view full size
Related Tutorials
Free guides on learn.littlebird.com.au
