5mm High Emission LED, 20mA Max
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Prices updated: 13 Oct 2026
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About this product
A basic 5mm high-emission LED for power indication, pin status and simple displays. Its typical forward voltage is 2.0 V, with a rated maximum current of 20 mA and a suggested operating current of 16 mA to 18 mA, giving a luminous intensity of about 150 to 200 mcd.
Specifications
- Package size
- 5 mm
- Forward voltage
- 2.0 V typical (1.8 V - 2.2 V)
- Max forward current
- 20 mA
- Suggested operating current
- 16 mA - 18 mA
- Luminous intensity
- 150 - 200 mcd
Frequently asked questions
How do I limit the current through the LED?
Use a series resistor calculated as R = (Vs - 2.0) / I. For example, with a 5 V supply and a target of 17 mA, the resistance is about 176 ohms, so a 180 ohm resistor gives roughly 16.7 mA.
Which leg is positive?
The longer lead is the anode (+) and the shorter lead is the cathode (-). The LED only lights when connected in the forward direction.
