3mm Yellow LEDs
= Standard T1 ThroughHole Light Emitting Diodes =
3mm yellow LEDs are compact, throughhole components that serve as reliable visual indicators for Arduino, Raspberry Pi, and electronics projects . With a standard round T1 package and 2.54mm pin spacing, they integrate easily into breadboards and PCBs.
Versatile Indicator - Ideal for power, status, and signal lights
Standard T1 Package Fits 3mm LED holders and breadboards
The longer lead is the anode (+), and the shorter lead is the cathode (-).
A currentlimiting resistor (typically 220Ω1kΩ) is required to protect the LED.
The typical forward current is 20mA30mA and forward voltage is 1.85V2.1V; exceeding these can damage the component .
= Typical Technical Specifications (Varies by Model) =
| Parameter | Value |
|---|
| Package Type | 3mm Round (T-1) |
| Forward Voltage (Typ.) | 1.8V - 2.1V |
| Forward Current (Max) | 20mA - 30mA |
| Dominant Wavelength | 588nm - 594nm |
| Viewing Angle | 20° - 60° |
| Luminous Intensity | 1.5mcd to 2500mcd+ |
= Key Features =
+High Brightness Options Available in standard, bright, and ultrabright variants for various applications
+Variety of Lens Types Choose between clear, diffused, yellowtinted, or milky-white lenses for different light dispersion
+Long Life Solidstate reliability with low power consumption and high resistance to shock and vibration
== Applications ==
- Power and status indicators
- Arduino and microcontroller projects
- Breadboard prototyping
- Decorative lighting arrays
- PCB logic status indicators
Reliable and Widely Used - Standard LED format with consistent performance
Easy Integration - Compatible with all microcontrollers and development boards
√ Available in packs of 10, 100, and 500+
√ Compatible with standard 3mm LED holders and bezels
√ Low power consumption for battery-powered projects
= Troubleshooting =
LED not lighting:
- Check polarity: anode (long lead) to positive, cathode (short lead) to ground
- Verify a current-limiting resistor is installed
- Ensure the supply voltage meets the forward voltage requirement
Dim or uneven brightness:
- Confirm the correct resistor value is being used
- Check for loose or cold solder joints
- Ensure the LED is not being driven above its maximum current
