Guangmai Technology is professional in making the SMD LED Chip Soldering Welding Assembly SMT onto PCB Service.
LED reflow soldering temperature and time setting
After reflow soldering of the LED lamp beads, the reflow soldering temperature must be set, otherwise it is easy to cause the dead light phenomenon of the batch of lamp beads and cause irreparable losses. So how can LED reflow soldering work badly and cause such unnecessary losses? GMKJ LED is here for everyone to explain.
1. After the LED reflow soldering temperature curve is adjusted, the mass production must be done after the first board is confirmed and the quality is OK. This is the first confirmation in the factory quality management.
2. LED reflow soldering. Before doing soldering work, you must read the factory specifications of the LED lamp beads and see its various technical parameters.
1. It depends on the temperature resistance of the LED lamp bead packaging material;
2. It depends on what material the LED welding base material is, such as general PCB (fiber board, etc.), aluminum substrate, ceramic board, etc.;
3. It depends on the solder, whether it is high temperature or low temperature solder paste, or resin, etc.;
4. It should be determined according to the actual quality of the LED reflow soldering equipment, depending on the number of temperature zones of the LED reflow soldering, the control of the pole flow rate, the fan, and the temperature setting of each zone.
3. Reference of general adjustment parameters of LED lamp beads after LED reflow soldering
The lowest temperature is 150-170 degrees, the highest temperature is best 240-245 degrees (the highest temperature can be adjusted to 260, if 245 degrees can melt tin, do not adjust to 260), the time above 220 degrees can not exceed 60 seconds, If the temperature is increased, the time of 260 degrees cannot exceed 10 seconds. If it is 7 temperature zones, you can refer to the following settings: 160, 170, 175, 180, 190, 210, 245, 220. If the LED lamp bead is a silicone lens, BI58SN42 solder paste can be used, and the maximum temperature is 225 degrees Celsius. If it is a PC lens, reflow soldering cannot be used at all.
Product Picture: LED pcb boards are passing the reflow oven after SMT
What GMKJ LED can do now:
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| Wire soldering and LED & resistors soldering onto the pcb boards | wago wire connectors soldering and assembly | Aluminum pcb boards gerber file and Altium design drawing design |
GMKJ LED is proffesional in making the LED chips:
LED lighting on effect after soldering, we will check 100% before shipment.
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| Plant LED growth pcb boards 100% lighting on check before shipment | UV LED Lighting on effect checking before shipment |
About Guangmai
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For more details of the SMD LED Chip Soldering Welding Assembly SMT onto PCB Service, please feel free to contact with Guangmai Tech directly.
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