LED high-power lamp bead is a kind of LED lamp bead. Compared with LED high-power lamp bead, LED high-power lamp bead has higher power, brighter brightness and higher price. The rated current of low power LED lamp beads is 20mA, and the rated current higher than 20mA can be regarded as high power basically. General power: 0.25w, 0.5w, 1w, 3w, 5w, 8w, 10w, etc.

LED high-power lamp beads

LED is a semiconductor device, which is sensitive to static electricity. Especially for white, green, blue and purple LEDs, it is necessary to prevent static electricity and eliminate static electricity.

1. Generation of static electricity:

① Friction: In daily life, any two objects made of different materials can generate static electricity after contact and separation. The most common way to generate static electricity is to generate electricity by friction. The better the insulation of materials, the easier it is to generate electricity by friction. In addition, static electricity can also be generated when objects of any two different substances are separated after contact.

② Induction: For conductive materials, because electrons can flow freely on their surfaces, if they are placed in an electric field, positive and negative ions will transfer and charge will be generated on their surfaces due to the repulsion of the same and the attraction of the different.

③ Conduction: For conductive materials, because electrons can flow freely on its surface, such as contact with charged objects, charge transfer will occur.

2. The harm of static electricity to LED:

① The LED is locally injured due to the heat generated by the instantaneous electric field or current, which shows that the leakage current increases rapidly and it can still work, but the brightness decreases and the life is damaged.

② The insulation layer of LED is damaged due to electric field or current, making the device unable to work (completely damaged), which is shown as dead light.

3. Electrostatic protection and elimination measures:

For the entire process (production, testing, packaging, etc.), all employees who directly contact with LED shall take measures to prevent and eliminate static electricity, mainly including

1. The workshop shall be paved with anti-static floor and well grounded.

2. The worktable is anti-static, and the production machine is well grounded.

3. Operators shall wear anti-static clothing, anti-static bracelets, gloves or foot rings.

4. Apply ion blower.

5. Grounding measures shall be taken for welding electric soldering iron.

6. The package is made of anti-static materials.