3 reasons and countermeasures for LED light strip false death

Publisher:脑洞狂想Latest update time:2011-04-29 Source: 慧聪网Keywords:LED Reading articles on mobile phones Scan QR code
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During the production process of LED light strips, there will be a phenomenon of LED false death (i.e. LED does not light up), which is most likely to occur in 5050 LED light strips. The reasons for this phenomenon are as follows:

1. Static electricity burns out. Because LED is an electrostatic sensitive component, if the electrostatic protection work is not done well during the production process, the LED chip will be burned out due to static electricity, resulting in the false death phenomenon of the LED light strip.

The measure to prevent this phenomenon from happening is to strengthen electrostatic protection. All employees who come into contact with LEDs must wear anti-static gloves and electrostatic rings as required, and tools and instruments must be grounded.

2. High temperature damage. The high temperature resistance of LED is not good. Therefore, if the welding temperature and welding time of LED are not well controlled during the production and maintenance process, the LED chip will be damaged due to excessive or continuous high temperature, resulting in the false death of LED light strips.

Measures to prevent this phenomenon are: to do a good job of temperature control of reflow soldering and soldering iron, to assign specific personnel to be responsible and to manage special files; to use temperature-controlled soldering iron to effectively prevent high temperature from burning the LED chip.

3. Moisture bursts at high temperatures. If the LED package is exposed to the air for a long time, it will absorb moisture. If it is not dehumidified before use, the moisture in the LED package will expand due to the high temperature and long time period during reflow soldering, causing the LED package to burst, which will indirectly cause the LED chip to overheat and be damaged.

Solution: The storage environment of LEDs should maintain a constant temperature and humidity. Unused LEDs must be placed in an oven at about 80° for 6 to 8 hours for dehumidification before the next use to ensure that the LEDs used will not absorb moisture.

Keywords:LED Reference address:3 reasons and countermeasures for LED light strip false death

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