CJ7812

CJ7812 is a 12V fixed positive voltage regulator in the 78xx series, commonly used to provide stable DC power in electronic circuits. It accepts an input voltage up to 35V and delivers a constant 12V output with a maximum current of 1A (with proper heat dissipation). Key features include built-in thermal overload protection, short-circuit protection, and internal current limiting.
Applications: Power supplies, battery chargers, and voltage regulation in automotive, industrial, or consumer electronics.
Usage Notes:
- Ensure input voltage is at least 2V higher than the output (e.g., ≥14V for 12V output).
- Use capacitors (e.g., 0.33μF at input, 0.1μF at output) to reduce noise.
- A heatsink may be required for high current loads.
Compact and reliable, the CJ7812 simplifies voltage regulation in low-to-medium-power designs.

The CJ7812 is a 12V linear voltage regulator. Equivalent products include:
- LM7812 (Texas Instruments)
- UA7812 (Fairchild/ON Semiconductor)
- MC7812 (ON Semiconductor)
- L7812CV (STMicroelectronics)
- KA7812 (Samsung)
These are all 12V, 1A fixed-output regulators with similar pinouts and specifications. Ensure compatibility with your circuit's input voltage and thermal requirements.

The CJ7812 is a 12V linear voltage regulator with 3 pins:
1. Input (Pin 1) – Connects to the unregulated DC voltage source (typically up to 35V).
2. Ground (Pin 2) – Common reference for input and output.
3. Output (Pin 3) – Provides a stable +12V DC output (up to 1A current).
It is a fixed positive regulator designed to maintain a constant 12V output with minimal external components. Commonly used in power supply circuits for stable voltage regulation.
Key Features:
- TO-220 package (common for heat dissipation).
- Built-in overcurrent and thermal protection.

The CJ7812 is a linear voltage regulator in a TO-220 package. It provides a fixed +12V output with a maximum current of 1A. The TO-220 package is a common through-hole type with a metal tab for heat dissipation, suitable for various electronic applications. Its pins are typically arranged as input, ground, and output.