Sunday, December 6, 2015

Basics - LED Characteristics


Light Colour
Forward voltage at If= 20mA
Min V
Typical V
Red
 
1.7
2.0
Yellow
 
1.8
2.1
Orange/ Amber
 
1.8
2.1
Green (low)
 
2.0
2.2
Green (high)
 
3.0
3.1 to 4.0
Pink
 
3.0
3.2
Purple
 
3.0
3.2
White
 
3.0
3.3
Blue
 
3.2
3.4

 

Notes:

1 LEDs can have low brightness (< 1000 mCd) and angle of light directionality of 85 degrees;

2 LEDs can have high brightness (> 5000 mCd) and angle of light directionality of 40 degrees;

3 Green LEDs can be either low or high brightness and have a range of forward voltages as shown.  

4 Reverse breakdown voltage is about 5V. Exceeding this usually damages the LED;

5 LEDs with internal flashing capability may have higher forward voltages than above;

6 Always use manufacturer's data if available.

7 below is for 2 Pin/Leg LED connections

 
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