Generic LED Light Emitting Diode – 3mm White
₹2.00₹5.00 (price_including_tax) (-60%)
Achieve clear visual indication and illumination in your circuits. Integrate this standard 3mm white LED into educational kits, prototyping boards, or small lighting projects. Engineered for dependable performance across various low-power applications.
Reliable 3mm white LED delivers consistent illumination, perfect for prototyping, indicator lights, and educational electronics projects.
Ideal for diverse projects from basic indicators to complex lighting designs effortlessly.
Consumes minimal power, extending battery life and reducing overall circuit load significantly.
Robust epoxy resin housing ensures longevity and consistent performance in various environments.
The Engineering Behind 3mm White LED
The 3mm White LED (Light Emitting Diode) is a fundamental semiconductor device designed for efficient light generation. Operating on the principle of electroluminescence, it emits white light when a forward bias voltage is applied across its p-n junction. The ‘3mm’ refers to its standard physical diameter, making it a widely adopted component in various low-power visual indication and illumination applications.
These LEDs are constructed with robust epoxy resin packaging, providing mechanical protection and lens shaping for light emission. Their inherent solid-state design ensures high durability, extended operational lifespan, and resistance to minor vibrations, making them ideal for both educational STEM projects and industrial prototyping where reliability is paramount.
Precise Luminous Output
The core feature of this white LED is its ability to produce a crisp, clear white light spectrum. This precise luminous output makes it exceptionally versatile for applications requiring neutral visual indicators, background illumination, or integrating into custom lighting solutions where color accuracy is important. Its controlled light dispersion is optimized for clear visibility.
Low Power Consumption & Longevity
Designed for energy efficiency, this 3mm white LED operates effectively at low current and voltage levels, minimizing power draw from circuits. This characteristic significantly extends battery life in portable applications and reduces operational costs in permanent installations. Its solid-state nature also guarantees a considerably longer lifespan compared to traditional incandescent bulbs.
Optimized for Performance & Integration
- Diode Type: Light Emitting Diode (LED)
- Color: White
- Size: 3mm Diameter
- Typical Forward Voltage: 2.8V – 3.4V DC
- Typical Forward Current: 20mA
- Luminous Intensity: 6000-8000 mcd
- Pin Configuration: Anode (Longer Lead), Cathode (Shorter Lead / Flat Edge)
- Lens Type: Diffused Clear
Features & Benefits
- Standard 3mm Size: Ensures compatibility with common breadboards, PCBs, and existing enclosures.
- Clear White Light: Provides neutral and high-contrast illumination for indicators and displays.
- Low Power Operation: Maximizes battery life and minimizes energy consumption in electronic projects.
- High Luminous Efficiency: Delivers bright light output with minimal current, improving visibility.
- Long Lifespan: Offers thousands of hours of reliable operation, reducing maintenance needs.
- Robust Epoxy Package: Protects the internal semiconductor from physical damage and environmental factors.
Pro-Grade Advantages
- Exceptional lifespan far exceeding incandescent alternatives for sustained operation.
- Extremely low power draw suitable for battery-operated and energy-sensitive designs.
- Standardized 3mm form factor ensures broad compatibility and ease of integration.
- Reliable, consistent white light output for clear visual feedback.
Technical Considerations
- Requires current-limiting resistor to prevent damage from overcurrent.
- Narrow viewing angle compared to some diffused panel indicators.
What is the typical forward voltage for a 3mm white LED?
A standard 3mm white LED typically has a forward voltage (Vf) ranging from 2.8V to 3.4V DC, which must be considered when designing your circuit and selecting a current-limiting resistor.
How do I connect this LED without damaging it?
You must connect a current-limiting resistor in series with the LED. Calculate the resistor value using Ohm’s Law (R = (Vs – Vf) / I), where Vs is source voltage, Vf is forward voltage, and I is desired forward current (typically 20mA).
What is the luminous intensity of this 3mm white LED?
The luminous intensity for a standard 3mm white LED commonly ranges between 6000 and 8000 millicandela (mcd), providing bright and visible light output for most applications.
Can this LED be used with a 5V microcontroller?
Yes, but it absolutely requires a current-limiting resistor. Without one, the LED will draw too much current and likely burn out almost instantly when connected to a 5V source.
What is the difference between the anode and cathode?
The anode is the positive (+) terminal, typically identified by the longer lead. The cathode is the negative (-) terminal, usually indicated by the shorter lead or a flat edge on the LED’s plastic casing. Current flows from anode to cathode.
| Specification | Value |
|---|---|
| Diode Type | LED (Light Emitting Diode) |
| Color | White |
| Lens Type | Diffused Clear |
| Package Size | 3mm Diameter |
| Forward Voltage (Vf) | 2.8V – 3.4V DC |
| Forward Current (If) | 20mA (max) |
| Luminous Intensity | 6000 – 8000 mcd |
| Wavelength | 450-470 nm |
| Operating Temperature | -20°C to +80°C |
| Pin Pitch | 2.54mm (standard) |
| Lead Length (Anode/Cathode) | 25mm / 23mm (typical) |
Additional information
| Brand | Generic |
|---|---|
| Technology | Optoelectronics |
| Operating Voltage | 2.8-3.4V DC |
| Max Current | 20mA |
| Package | Through-Hole |
| Value | White |
| Difficulty Level | Easy |
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