3mm Red LED 2Pin Transparent Through Hole

An Overview: 3mm Red LED 2Pin Transparent Through Hole

3mm Round Red LED is a small, versatile light-emitting diode used in various applications. Characterized by its compact 3mm diameter and round shape, this LED is easily identifiable by its clear or red-tinted lens. The transparent lens allows for maximum light output, making it suitable for a variety of signaling and indicator applications. The LED emits a bright red light, which is highly visible even in well-lit conditions.

Specifications

Features

1. Compact Size: The 3mm diameter makes it ideal for applications where space is limited.
2. High Brightness: Emitting a bright red light, it ensures visibility even in brightly lit environments.
3. Durable Construction: Encapsulated in a clear or red-tinted epoxy resin for protection and longevity.
4. Energy Efficient: Low power consumption due to the inherent efficiency of LEDs.
5. Wide Operating Temperature Range: Can function in extreme temperature conditions from -40°C to +85°C.
6. Long Lifespan: Typical lifespan of over 50,000 hours.
7. Easy to Use: Through-hole design with standard pin spacing for straightforward PCB mounting.

Applications

1. Indicators: Commonly used in electronic devices as power, status, or activity indicators.
2. Displays: Used in alphanumeric and graphical displays for various types of information display.
3. Signage: Ideal for creating illuminated signs and signals.
4. Toys: Incorporated in toys for visual effects and indications.
5. Automotive: Used in dashboard lights, indicator lights, and other vehicle lighting applications.
6. Consumer Electronics: Found in remote controls, calculators, and other small electronic devices.
7. DIY Projects: Popular among hobbyists and makers for creating custom electronic projects.
8. Industrial Equipment: Used in control panels and machinery for status indication.

Development

The development of the 3mm Round Red LED has been driven by advancements in semiconductor technology. The key material used in red LEDs is Gallium Arsenide Phosphide (GaAsP) or Aluminum Gallium Arsenide (AlGaAs), which emits light efficiently when a forward voltage is applied.

The manufacturing process involves creating the semiconductor wafer, doping it with impurities to create p-type and n-type regions, and then assembling it into the LED package. This includes attaching the semiconductor die to a lead frame, connecting it with fine gold wires, encapsulating it in epoxy resin, and finally trimming and forming the leads.

Research and development in LED technology have focused on increasing brightness, efficiency, and color purity, as well as reducing production costs. Innovations in packaging and materials have led to LEDs with better heat dissipation, longer lifespans, and more consistent performance.

Instructions for Use

1. Identification: Determine the anode (positive, longer lead) and cathode (negative, shorter lead). The flat side of the LED base usually indicates the cathode.
2. Circuit Design: Calculate the appropriate current-limiting resistor value using Ohm’s Law: 𝑅=𝑉𝑠𝑢𝑝𝑝𝑙𝑦−𝑉𝑓𝐼𝑓R=If​Vsupply​−Vf​​, where 𝑉𝑠𝑢𝑝𝑝𝑙𝑦Vsupply​ is the supply voltage, 𝑉𝑓Vf​ is the forward voltage of the LED (typically 2V), and 𝐼𝑓If​ is the desired forward current (typically 20mA).
3. Resistor Selection: Choose a resistor that closely matches the calculated value to ensure the LED operates safely and within its specifications.
4. Mounting: Insert the LED through the holes in the PCB, ensuring the correct orientation of the anode and cathode. Bend the leads slightly to hold the LED in place.
5. Soldering: Solder the leads to the PCB pads, ensuring a secure connection without excessive solder. Clip any excess lead length.
6. Testing: Power the circuit and verify that the LED illuminates correctly. If it does not light up, check the polarity and connections.
7. Integration: Integrate the LED into your final application, whether it’s part of an indicator panel, a display, or another device. Ensure proper heat management if used in high-current or high-temperature environments.

Safety Considerations

• Current Limiting: Always use a current-limiting resistor to prevent excessive current that can damage the LED.
• Polarity: Ensure correct polarity during installation; reversing the polarity can damage the LED.
• Heat Management: While LEDs are efficient, they can still produce heat. Ensure adequate ventilation or heat sinking in high-power applications.
• Handling: Handle LEDs with care to avoid damage to the leads or the epoxy encapsulation. Use appropriate ESD (Electrostatic Discharge) protection when handling and soldering.

The 3mm Round Red LED is a fundamental component in electronic design, offering high brightness, durability, and energy efficiency in a compact form. Its versatility and ease of use make it a staple in various industries, from consumer electronics to industrial applications. Proper understanding of its specifications, correct usage, and adherence to safety guidelines will ensure optimal performance and longevity in any application.

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