Professional Knowledge About LED Electrostatic 4

Question: How to effectively improve LED a static ability? What are the protective measures?

There are no direct measures to improve LED antistatic ability, or once LED is produced out, its antistatic index is confirmed. There is no effective method to improve its antistatic index. If LED antistatic ability is not high enough, we can consider some electronic products antistatic precautions, such as anti-static bench hook, ion fan, electrostatic clothing and so on.

In general, changing the LED chip of high antistatic ability is the only way to improve LED antistatic ability.

Question: How is the situation of the LED antistatic ability in the current market? What are the LED characteristics about antistatic ability of good quality?

Five-years continue test and ceaseless accumulation combined with the current situation let us know that the current LED market is very confused. There are various antistatic indexes from 250V to 8000V, among them, many are not genuine. See from the whole, some company has improved the current antistatic level of LED, as well as the quality.

The current LED of good quality, the antistatic level can reach 2000V、3000V, even more than 4000V. Except the high test result of LED antistatic electricity, the antistatic uniformity is also very good.

Question: Does it work for adding Zener diode on LED to improve the antistatic level? What is the principle?

The answer is that it can effectively improve the antistatic index of LED.

LED electrostatic damage is the result of the instant impact of the reverse static charge accumulation, once zener is added on this charge, the charge will be released by zener, because zener is reversely guided. However, this approach is often used when LED antistatic level is low, so there is the risk of damaging LED chips when zener is added. So this method is now used by less and less people. On the one hand, the cost is high, on the other hand, LED antistatic index has been improved recent years.

Question: Which one is easier to be damaged by the static electricity, LED chip or LED lamp?

LED lamp is easier to be damaged by the static electricity; this has the relations with the span of the two pins span. The electrode gap of LED chip crystal is very small. It is generally within one hundred microns. However, LED pin is about two millimeters. When static charge is transferred, the space is large. It is easy to form big potential difference, namely high voltage.

Therefore, when LED lamp appears the electrostatic accident, the sealed LED lamp is more prone to have electrostatic injury

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Tags：LED Antistatic , LED Electrostatic