Red LED 3mm (Pack of 1000 Pcs)

Red LED 3mm

Introduction

The Red LED 3mm is a small, versatile light-emitting diode used in various electronic projects and applications. Known for its compact size and bright illumination, this 3mm LED is ideal for use in indicators, displays, and decorative lighting. Its red light output provides clear visibility and adds a distinct visual element to electronic designs.

Features and Specifications

• Type: LED (Light Emitting Diode)
• Color: Red
• Diameter: 3mm
• Forward Voltage: Typically 1.8V to 2.2V (varies slightly by manufacturer)
• Forward Current: Generally 20mA
• Luminous Intensity: Approximately 5000 to 8000 mcd (millicandela)
• Viewing Angle: Around 15° to 30° (varies by design)
• Power Dissipation: Low, typically around 60mW
• Package Type: Through-hole mount with two leads

Applications

The Red LED 3mm is used in a variety of applications due to its compact size and bright red light output:

1. Indicators: Commonly used as status indicators in electronic devices to show power, status, or error conditions.
2. Displays: Useful in digital displays and counters where bright, clear visibility is required.
3. Decorative Lighting: Ideal for adding red lighting effects in decorative and hobbyist projects.
4. Signal Lights: Can be used in signal and alert systems where visual cues are needed.
5. Toys and Gadgets: Often incorporated into toys and small gadgets for visual effects.

Working Principle

The Red LED 3mm operates based on the principle of electroluminescence. When an electric current flows through the LED, it emits light due to the recombination of electrons and holes within the semiconductor material. The red light is produced by the specific materials used in the LED’s construction.

• Forward Voltage: The LED requires a certain minimum voltage to operate, typically between 1.8V and 2.2V.
• Forward Current: The LED operates best at a forward current of around 20mA. Exceeding this current can damage the LED or reduce its lifespan.
• Light Emission: The LED emits red light when the forward current passes through it, visible due to the specific wavelength of light generated by the semiconductor material.

Integration and Usage

Integrating the Red LED 3mm into a circuit involves connecting it to a power source through a current-limiting resistor to prevent damage. Key steps include:

1. Wiring: Connect the LED’s anode (positive lead) to the positive terminal of the power supply and the cathode (negative lead) to the ground through a current-limiting resistor.
2. Resistor Calculation: Choose an appropriate resistor value to limit the current to around 20mA. For example, with a 5V power supply and a forward voltage of 2V, a resistor value of approximately 150Ω is commonly used (calculated using Ohm’s Law).
3. Testing: Ensure the LED lights up when power is applied and that it operates within the specified current and voltage limits.

Advantages

The Red LED 3mm offers several advantages for electronic projects:

• Compact Size: Small diameter makes it suitable for tight spaces and compact designs.
• Brightness: Provides bright and clear red light output.
• Low Power Consumption: Consumes minimal power, making it energy-efficient.
• Durability: Long lifespan and robust construction ensure reliability in various applications.

Conclusion

The Red LED 3mm is a small but powerful component widely used in electronic projects and devices. Its bright red light, compact size, and efficiency make it a versatile choice for indicators, displays, and decorative purposes. With proper integration and usage, this LED provides reliable performance and visual clarity in a range of applications.