How to determine how many watts of LED lamp beads are？And the difference between LED lamp beads and SMD part one.

1. Voltage: LED lamp beads use a low-voltage power supply, the power supply voltage is between 2-4V, depending on the product, so it is driven by a higher-voltage power supply; a safer power supply, especially suitable for public places;

2. Current: working current is 0-15mA, brightness becomes brighter with the increase of current

3. Efficiency: Energy consumption is reduced by 80% compared with incandescent lamps with the same luminous efficiency.

4. Applicability: small, each unit LED chip is 3-5mm square, so it can be prepared into various shapes of devices, and is suitable for variable environments.

5. Response time: The response time of the incandescent lamp is milliseconds, and the response time of LED lights is nanoseconds.

6. Environmental pollution: no harmful metal mercury.

7. Color: changing the current can change the color. The light-emitting diode can easily adjust the energy band structure and band gap of the material through chemical modification methods to achieve red, yellow, green, blue, and orange multicolor light. For example, when the current is low, the LED is red, as the current increases, it can turn into orange, yellow, and finally green.

Classification of led lamp beads

1. In-line low power specifications include: straw hat/steel helmet, round head, concave, oval, square (2*3*4) bullet head, flat head, (3/5/flat head/bread type) piranha, etc.

2. SMD patches are generally divided into (3020/3528/5050 these are front light)/1016/1024, etc. These are side light sources.

3. High-power LEDs cannot be classified into SMD series. Their power and current usage are different, and their photoelectric parameters are quite different. If a single high-power LED light source does not have a heat sink base (usually a hexagonal aluminum base), its appearance is not much different from ordinary patches. The high-power LED light source is round and the packaging method is basically the same as that of SMD patches. However, it is essentially different from SMD patches in terms of use conditions/environment/effects.