The Difference Between LED & Diode

The Difference Between LED & Diode
••• DKsamco/iStock/GettyImages

LED stands for light-emitting diode, so on the surface, it may appear there is any different between the LED and a common diode. Normal diodes, however, are used as resisting semiconductors in electric circuits, while LEDs are designed specifically to produce light as a result of the extra energy caused by their resistance. This leads to several key differences.

Purpose

Normal diodes are designed to affect electrical current, while LEDs are created to make light. This makes a lot of difference when it comes to placement and production. Normal diodes are hidden away in circuits where they can do their job, while LEDs are displayed so their light can be easily seen. Manufacturers must produce LEDs so that the diode materials are placed in the forefront of the device and not hidden by wires or connections.

Materials

Normal diodes are made of simple silicon materials that have natural semiconductor properties. LEDs are much more complicated. Instead of using simple silicon, LEDs are created with a variety of metallic elements, which are carefully mixed with the silicon as it is being crystallized. These different metallic elements help the LED to produce light and change its color.

Coating and Shell

The coating and shell of most diodes is designed primarily for protection, not for visibility. For LEDs, however, the coating and shell that protects the diode must be clear to allow light to pass through. Some LEDs have extra cases or lenses that focus their light so it can be used for spotlighting.

Current

For normal diodes, manufacturers design the materials depending on the current voltage and cycles that flow through the diode. For LEDs, current is not so important—the current flow itself is the deciding factor, and the different between low and high level LEDs. The type of current is also a difference between LEDs and laser diodes.

Related Articles

What Are the Colors of Neon?
The Advantages & Disadvantages of Series and Parallel...
LED Vs. CF Light Bulbs
How Do LED Lights Work?
The Use of Phosphorous in Light Bulbs
Regular Lights Vs. Laser Lights
How Did Thomas Edison's Light Bulb Work?
How Does a High Pressure Sodium Ballast Work?
How Does a Rectifier Work?
Types of Light Sensors
LED Street Lights vs. Metal Halide Lamps
What Are the Different Types of Ballast?
What Are the Functions of a Zener Diode?
What Are the Advantages & Disadvantages of Diode Lasers?
How to Convert Incandescent Watts to LED Watts
Difference Between 6011 and 7018 Welding Rods
Characteristics of a Diode Detector
Raw Materials Used in the Manufacture of Electronic...
How Are Diodes Used in Our Everyday Lives?
How to Identify Glass Diodes

Dont Go!

We Have More Great Sciencing Articles!