How to do anti-static work for SMD LED chip
In the process of production of
SMD LED chip, pay special attention to a parameter that is often overlooked: ESD (Electro-Static discharge), electrostatic discharge is a major culprit in damage to LED. It should be said that electrostatic damage is a natural enemy of electronic components, especially Electrostatic sensitive components such as blue LEDs and white LEDs, if damaged, will cause LED lamp beads to fail or even be scrapped, so electrostatic protection must be done.
LED lamp beads anti-static ideas:
Static electricity is generated whenever different materials are rubbed or even separated, so static electricity cannot be avoided and can only be limited. Electrostatic discharge generates current. As long as the discharge is controlled, the electrostatic damage can be reduced. The common method is to conduct static electricity through grounding. Therefore, the workbench needs to establish a complete grounding system, and the static electricity on the non-conductor can be ionized. with.
LED anti-static
What should you pay attention to in the LED industry?
1. The smd led of Yuanke Optoelectronics are generally vacuum-packed with anti-static bags, and do not open the package before use.
2. When using the source photoelectric LED lamp bead, it is necessary to do static electricity protection, such as wearing electrostatic protective clothing, wearing an electrostatic wristband, workbench and soldering iron grounding, etc. The qualified factory recommends using an ion fan.
3. Regularly check whether all ESD protection systems are operating normally, such as: surface impedance tester, electrostatic tester, hand and foot ring tester, ion fan tester, etc.
4. Confirm the antistatic ability of each LED lamp bead, and audit the electrostatic protection system of the processing plant.
Four common ways to prevent static electricity:
First, the divergence method:
1. Eliminate static electricity on the conductor by grounding (ground)
2. Limit the current rate by the path resistance
3. Control the length of static dissipation time by the path resistance
Second, the neutralization method:
Neutralize the static charge on the surface of the non-conductor (insulator) by blowing a large amount of positive and negative ions, such as an ion fan or an ion gun.
Third, the way of shielding:
When the electrostatic sensitive component is transferred from one electrostatic safety zone to another, it is necessary to provide shielding protection in order to avoid electrostatic damage that may occur during transportation. For example: masking bag / conductive box.
Fourth, prevention methods:
Use antistatic/conductive or low impedance materials wherever possible in the ESD work area. For example: anti-static table, floor mat.
Thesmd led produced by Yuanke Optoelectronics have first-class electrostatic protection capability, but it is still recommended that customers do anti-static work, because electrostatic damage will reduce the life of LED lamp beads, especially small and medium power
SMD LEDs! Standardizing the production process is an important means to improve the yield and product quality. Yuanke Optoelectronics advises everyone to do 5S production and improve production efficiency! (Yuanke LED http://www.ykgdled.com)
