Instructions for use of deep ultraviolet LED:
1) UVC LED storage: Recommended storage temperature is 10℃～40℃, humidity is <65%, and the packaging bag is sealed and stored. In order to ensure product quality, outer packaging
Before opening the bag, it is recommended to use it within one year after leaving the factory, and it is recommended to use it within 28 days after the outer packaging bag is opened. After opening the outer packaging bag, build
It is recommended to be used up within 24 hours, and it must be resealed for storage after 24 hours. It is recommended to take dehumidification measures before using it next time: temperature 75℃,
Time 6 hours.
2) How to pick up: Wear gloves or finger cots when contacting the UVC LED for inspection. The work surface should also be grounded, and the packaging bag should be sealed in time after opening to prevent
Stop pin oxidation. After opening the package, the operator should use tweezers to hold both sides of the UVC LED to avoid direct contact with the front of the UVC LED.
3) Installation: This process is mainly electrostatic protection:
a. Check whether the grounding wire of the machine and equipment is normal before production.
b. Check whether the static ring of the personnel is normal, and check whether the metal of the static ring is in close contact with the skin of the person.
c. It is best to require the operator to wear electrostatic gloves or electrostatic finger cots during installation.
d. The work surface is required to be covered with electrostatic tape, and the tapes should be connected to each other and grounded.
e. After opening, it is best to use it up within 24 hours, otherwise it may cause the lamp pin to oxidize and rust.
4) It is recommended to use low-temperature solder paste for reflow soldering. The temperature curve is shown on the right:
A. Preheating zone
The heating rate is 1.0-3.0℃/s, the heating in the preheating zone
If the speed is too fast, it is easy to deteriorate the flowability and composition of the solder paste.
Prone to tin explosion and tin bead phenomenon.
B. Infiltration area
The temperature is 110-130℃, and the time is 90-100s.
If the temperature is too low, the solder will not melt after reflow (recommended temperature rise rate <2°C/s).
C. Reflow area
The peak temperature should be set at 170-180°C. It is recommended to adjust the melting time above 138℃ to 50-80s.
D. Cooling zone Cooling rate <4℃/s
Note: The reflow temperature curve varies depending on the shape of chip components and substrates and the type of reflow furnace. It is recommended to do more tests before batch soldering to ensure the most appropriate
Curve.
5) With the increase of current and temperature of UV LED, its service life will decrease in a certain curve, which will cause the UV LED to decay faster.
6) It is recommended to have a grounding circuit when designing the PCB.
7) The photoelectric performance level of the product is determined by our company. The photoelectric performance of each level of the product is different. Please customer according to your own use.
Use the conditions to decide the method of use.
8) We have been working hard to improve the performance of UVC LED products. Specifications are subject to change without notice.
**Important safety reminder: This product is a deep ultraviolet LED, which will produce deep ultraviolet after correct operation and power on. This kind of ultraviolet
The thread is harmful to human skin and eyes. Avoid direct exposure to deep ultraviolet without protective measures.
