LED center » Why do I need a resistor with an LED? Why do you need a resistor with an LED?
The short answer: to limit the current in the LED to a safe value. The long answer: LEDs are semiconductors, diodes in particular. Super Bright LEDs - LED Information. LEDS are static sensitive devices.
Observe static sensitivity handling precautions, such as wearing a grounded wrist strap when handling. When forming leads, the leads should be bent at a point at least 3 mm from the base of the led Avoid damage to LEDS by soldering for no longer than 3 seconds with 700° iron The following information applies only to single LED components, not LED Bulbs and Products. All of our LED bulbs and products have resistors built-in for operation at their rated voltages. LED components are not considered bulbs, an LED bulb is a complete system consisting of LEDs, LED drivers or resistors, and a housing. ALWAYS USE A RESISTOR IN SERIES WITH THE LED OR LEDS. 5 Pcs 1W White LED High Power Wide Angle 200,000MCD - eBay (item. 5 Pcs 1W White LED High Power Wide Angle 200,000MCD - eBay (item.