1, the production must wear anti-static gloves, anti-static wrist, soldering iron must be grounded, it is strictly prohibited to touch the white LED two lead pins. Because the anti-static of the white LED is 100V, and the static electricity of the human body will damage the crystalline layer of the light-emitting diode when the working humidity is 60%-90% on the workbench, the diode will fail (not bright) after working for a period of time (such as 10 hours), and it will fail immediately in serious cases.

2, welding temperature is 260℃, 3 seconds. Too high temperature and too long time will burn the chip. In order to better protect the LED, the LED colloid and the PC board should be maintained at a distance of more than 2mm, so that the welding heat is dispersed in the pin.

3, the normal working current of the LED is 20mA, and small fluctuations in voltage (such as 0.1V) will cause large fluctuations in current (10%-15%). Therefore, in the circuit design, different current limiting resistors should be paired according to the voltage drop of the LED to ensure that the LED is in the best working condition. If the current is too large, the LED will shorten the life, and the current is too small to reach the required light intensity.

In general, when the bulk supply will be LED spectroscopic color separation, that is, the LED light intensity, voltage, light color in the same package of products are consistent, and indicated on the spectroscopic color table.