3mm Blue LEDs
= Standard T1 ThroughHole Emitting Diodes for Electronics Projects =
3mm blue LEDs are compact, throughhole components used as visual indicators in Arduino, Raspberry Pi, and other DIY electronics projects. Packaged in a standard 3mm (T1) round form, they fit easily into breadboards and PCBs.
Compact 3mm Size - Ideal for fitting into tight spaces and small designs
Clear Visual Indicator - Bright blue light for status indication and display projects
Blue LEDs have a higher forward voltage than red/green (typically 3.03.6V). Always use a currentlimiting resistor (220Ω470Ω) to avoid exceeding the 20mA30mA max current.
The longer lead is the Anode (+), the shorter lead is the Cathode (-).
Do not exceed the maximum forward current of 20mA-30mA to prevent damage.
= Technical Specifications (Typical Values) =
| Parameter | Value |
|---|
| Package Type | 3mm (T-1) Round |
| Mounting Type | Through Hole |
| Pin Spacing | 2.54mm |
| Forward Voltage (Typical) | 3.0V - 4.5V |
| Forward Current (Max) | 20mA - 30mA |
| Dominant Wavelength | 450nm - 470nm |
| Lens Types | Clear / Diffused / Blue Tinted |
Note: Specifications vary by manufacturer - always check the datasheet for your specific model.
= Key Features =
+High Brightness Options - Available from 40mcd to 5000mcd, including super bright variants
+Durable & Long Life Solidstate reliability with low power consumption
+Multiple Lens Options Clear for focused light, diffused for wideangle illumination
== Applications ==
- Status indicators for electronics and microcontrollers
- Backlighting for small displays
- Decorative and accent lighting
- General prototyping and DIY projects
Reliable and Widely Used - A standard LED format with consistent performance
Easy Integration - Works 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 current-limiting resistor is installed
- Ensure voltage supply meets forward voltage requirement
Dim or uneven brightness:
- Confirm correct current limiting resistor value
- Check for loose connections
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