⑴LED storage: suggest to sealed stock in under the temperature of 10℃-55℃,
humidity of 30%-65%.In order tokeep a good quality, pls use it within 1 year after the prodcution date;
and use it out within 28days after open the package.
⑵ When taking or touch the LED, pls make sure to wear the gloves.
Seal the package in time in orde to avoid the pin oxidation. When openning the package,
need to use the weezers clamped on both sides of LED in order not to touch the face of the LED.
⑶ Installation: This process is mainly to protect the static electricity:
① Check if the grounding wire of the machine equipment is normal before production;
② Check if the static ring is normal, check static metal and human skin contact closely;
③ Check if the workerswear anti-static gloves;
④ Check if the working table is paved with electrostatic rubber cloth,
and the rubber cloth is connected to each other.
⑤ After opening the seal, it is better to use it out in 24hors,
otherwise it may cause the oxidation of the foot.
5.It is recommended to use low temperature solder paste for reflow,
and the temperature curve is shown in the following diagram.
① Preheating area
The temperature speed is 1.0-3.0℃/S. If the temperature rises too fast, it is easy to cause
paste mobility and component deterioration, then cause the tin explosive and phenomenon.
② Infiltrating area
The temperature is 110-130℃, 90-100s is the most suitable. If the temperature is too low,
then the solder will not melt if it is rewelded. It is recommended that the temperature rise speed is <2℃/ s.
③ Reflow Area
The peak temperature should be set at 170-180℃. The melting time suggests to adjust to 50-80 seconds
when above 138℃
④ Cooling Area
Temperature cooling spead is better <4℃/ s.
⑸ With the increase of current and temperature, the life of LED will decrease, which leads to the acceleration of the attenuation of LED.
⑹ It is suggested that a grounding circuit should be used in the design of PCB. Pay special attention to the usage environment of LED: the temperature is between -30℃ to 55℃, and the humidity is between 65%. Otherwise, the LED will be broken by electrostatic and high current breakdown.
6.Major security tips
This product is a deep ultraviolet LED, which will produce ultraviolet light after the correct
operation of electricity. Thus it is harmful to the skin and eyes of the human body. No
protective measures should be avoided directly in deep ultraviolet light.
It is recommended to wear protective clothing,gloves and glass
Deli electronics tehcnology co ltd