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Summary of LED lamp bead failure or necrosis

Update:13 Jul 2019
Summary:

White LED is a voltage-sensitive device. Wall washer fa […]

White LED is a voltage-sensitive device. Wall washer factory direct sales, wall washer manufacturers, wall washer manufacturers in the actual work with a current of 20mA as the upper limit, but often due to various reasons in use The current increases, and if no protective measures are taken, the LED will be damaged after the increased current exceeds a certain time and amplitude.

The main causes of LED damage are:

1 Sudden rise in the supply voltage.

A short circuit of a component or printed wiring or other conductor in the line forms a partial short circuit of the LED power supply path, causing the voltage in this place to increase.

3 A certain LED is damaged due to its own quality, thus forming a short circuit, and its original voltage drop is transferred to other LEDs.

4 The temperature inside the lamp is too high, which deteriorates the characteristics of the LED.

5 The inside of the lamp is filled with water, and the water is electrically conductive.

6 At the time of assembly, there is no anti-static work, so that the inside of the LED has been damaged by static electricity. Despite the application of normal voltage and current values, it is extremely easy to cause damage to the LED.