STMICROELECTRONICS 7812 12V 100mA Linear Voltage Regulator, SOT-89-3

The STMICROELECTRONICS 7812 is a fixed-output, surface-mount linear voltage regulator designed to deliver a stable 12V DC output from a higher input voltage. This compact and reliable component is part of the popular 78xx series, offering a straightforward solution for stepping down voltage in a wide array of low-power electronic circuits.

With a maximum output current of 100mA, it is perfectly suited for powering microcontrollers, sensors, op-amps, and other integrated circuits that require a clean, regulated 12V supply. Its primary input rating of 19V is typical, but the regulator can accept an input voltage up to a maximum of 35V, providing good headroom for varying power source conditions. The fixed 12V output ensures a consistent voltage level, critical for the stable operation of sensitive electronic components.

Housed in a space-saving SOT-89-3 surface-mount package, this regulator is ideal for modern, compact PCB designs where board real estate is at a premium. It features three pins for easy integration into your circuit layout. The device is rated for operation across an extensive temperature range from -40°C to 125°C, making it suitable for applications in challenging environments, from industrial controls to automotive electronics.

As a linear regulator, it provides a simple, low-noise output without the switching artefacts associated with other regulator types, which is advantageous for analogue and RF circuits. The product is confirmed to contain no Substances of Very High Concern (SVHC) as of the latest assessment, aligning with modern environmental and safety standards.

Key Specifications:

• Output Voltage: Fixed at 12V
• Maximum Output Current: 100mA
• Maximum Input Voltage: 35V
• Package Type: SOT-89-3 (Surface Mount)
• Pin Count: 3
• Operating Temperature Range: -40°C to +125°C
• Mounting Style: Surface Mount