5mm through-hole LED diodes with clear lenses, available in red or green. They fit standard breadboards and 2.54mm-pitch PCB layouts for indicator lights, prototypes and panel projects. Select the colour and quantity you need, and always use a current-limiting resistor.
Specifications
By colour
What's in the box
Your selected red or green variant and order quantity. Resistors are not included.
Great for
Wiring & getting started
- Identify polarity
The longer lead is normally the anode (+). The shorter lead and the flat side of the body identify the cathode (-).
- Add a resistor
Use a current-limiting resistor in series. A conservative starting point is 100 ohm at 3.3V or 220 ohm at 5V.
- Connect with power off
Wire supply positive to the resistor, then the LED anode. Connect the cathode to ground.
- Power and check
If it does not light, switch off and check polarity before trying again.
