How to prevent static electricity with in-line LED lamp beads
If the plug-in lamp beads do not take anti-static measures, it will lead to a series of phenomena such as dead lights, broken lights, abnormal light emission, and insufficient brightness. In severe cases, the lamp beads will be scrapped. Therefore, it is very important to take anti-static measures for plug-in lamp beads. Hailongxing will tell you several ways to prevent it today.
In-line LED lamp beads to prevent static electricity
All operators must wear anti-static gloves and anti-static wrist straps. Anti-static wrist straps must be tested every day, and must be replaced if they fail. It is strictly forbidden to touch the two pins of the LED with bare hands. Because the static electricity of the human body will damage the crystalline layer of the in-line LED when the working humidity of the workbench is 60%-90%. It will lead to abnormal lighting, or the low power test does not light up, etc.
The contact iron and dip soldering equipment, operating table, and storage shelf must be grounded, and ion fans should be used to eliminate static electricity.
Must be packed in an anti-electric bag
In-line LED storage:
1. LEDs must be stored in an environment where the temperature is lower than 30 and the relative humidity is lower than 60%, otherwise it is very likely to cause moisture absorption and increase the chance of dead lights
2. Pay attention to the cleanliness of the storage environment, because the surface of the LED lamp bead pins is plated with a layer of silver or tin, and the bracket will change color when exposed to chemicals or chemical gases.
3. If the anti-static is turned on, it needs to be sealed again for storage.
The above said that Hailongxing Optoelectronics will answer the questions about preventing static electricity and storing lamp beads. I hope it will be helpful to you.
There are many welding methods for LED lamp beads on the chip, and the following is one of the commonly used methods for reference. First, use an electric soldering iron to heat some soldering tin on the positive and negative electrode pads of the lamp bead (the soldering tin must not be too much, otherwise, the positive and negative electrode pads will be connected once heated with a hot-air gun), then use a hot-air gun to heat the positive and negative electrode pads at the same time, after the tin melts, use tweezers to place the positive and negative electrodes of the lamp bead on the corresponding pad.
LED is the light emitting diode, which is a semiconductor solid light emitting device that converts electric energy into light energy. Its core is the PN junction. In addition to the forward conduction, reverse cut-off and breakdown characteristics of the general PN junction, it also has the light emitting characteristics under certain conditions. Its structure mainly includes the following parts: lead, bracket, encapsulation glue, bonding wire, LED chip, solid crystal glue and phosphor. The discoloration failure of LED lamp bead is closely related to its material, structure, packaging process and service conditions. The following will analyze the causes of its discoloration through specific cases.
LED lamp beads are also called light emitting diodes. It has a wide range of applications. Its luminous colors include red light, emerald green light, yellow green light, yellow light, purple light, blue light, white light and orange light. The above is monochromatic light. It can also be made into two or three colors.
The gold wire used to package LED lamp beads contains more than 99.99% gold. It is produced by drawing gold from this material. In addition to 99.99% gold, this gold also contains less than 1% other trace elements. One of the core components of LED lamp bead packaging is gold wire, which is the bridge connecting the luminous chip and the welding point, and plays a decisive role in the service life of LED lamp bead. So how to identify the purity of gold thread?