This small blue LED is not too bright, and ideal for prototyping and experimenting on a breadboard. The LED is a 3mm / T1 and has a semi-transparent finish. To use this LED you will need a current limiting resistor; this will vary depending on your input voltage. Typically with a 5V supply we recommend a 100 ohm resistor for a single LED. Alternatively you can also use a 20mA current limiter (linked below).