Product Description
The 3mm Green LED is a compact, ultra-bright semiconductor lighting component engineered for status panels, microcontroller breadboard prototyping, custom audio gear, and educational electronics projects. Emitting a clean, vibrant green illumination through a diffused or clear 3mm round lens, this diode delivers high visibility while maintaining exceptionally low power consumption.
Essential for building custom control panels, power indicators, error flags, and DIY indicator lights, this standard diode combines reliable forward-voltage performance with seamless compatibility for Arduino, ESP32, and Raspberry Pi circuits.
🔌 Wiring Tip: LEDs are polarized components. The longer leg is the positive anode (connects to your power source through a resistor), and the shorter leg is the negative cathode (connects to ground). Always use a suitable current-limiting resistor (typically 220Ω to 470Ω for 5V/3.3V circuits) to prevent permanent burnout from excessive forward current.
Technical & Architectural Highlights
Compact 3mm Footprint: Standard miniature round package fits neatly into tight control panels, instrument clusters, and compact PCBs.
Vibrant Green Optic: High-purity wavelength output ensures clear visual status notification even in ambient light.
Breadboard & PCB Friendly: Standard lead spacing allows fast insertion into solderless prototyping boards and permanent perfboards.
Low Power & High Efficiency: Delivers brilliant brightness at standard low-current microcontroller drive levels.
Technical Specifications
| Parameter | Value / Specification |
| Product Type | Through-Hole Round LED Diode |
| Diameter Size | 3 mm |
| Emitted Color | Green |
| Model Code | LED-3mm-G |
| Lens Type | Diffused / Color-Tinted (or Water-Clear variant) |
| Forward Voltage (Vf) | Approx. 2.0V – 2.2V |
| Forward Current (If) | Recommended 15mA – 20mA max |
| Mounting Style | Through-Hole (THT) |
Applications
Status & Power Indicators: Signaling active states, power status, or mode selection on custom electronic enclosures.
Prototyping & Education: Teaching basic circuit theory, diode polarization, and microcontroller output states on breadboards.
Instrument Panels & Audio Gear: Adding front-panel status lights to DIY guitar pedals, amplifiers, and bench power supplies.
What’s in the Box
10 x 3mm Green LEDs (or bulk pack quantity as ordered).
All your LEDs, resistors, and electronic components are available with fast shipping across Egypt from Pro Tronix!



