How to solder the SMD lamp beads？
How to solder the SMD LED chips_Welding method of the SMD LED
Use tweezers to clamp the patch, clamp the metal part of the 1 end or the side clamp, but be careful not to force the plastic part of the LED lamp holder, or it will become soft and squeeze when the soldering iron is heated. Will always remember). The green end is the negative pole.
2. Put a small amount of tin paste on the wire. You can see the picture for more details. If you have more experience, you will know how much is appropriate.
3. The left-hand wire and the right-hand soldering iron, first wipe the tip of the soldering iron clean, and then touch the part of the wire with solder paste to the metal part of the LED section, lightly tap it with the soldering iron. Don’t take too long to see that the solder paste becomes shiny Metal shape is fine (be careful not to solder on the metal object, because the heat dissipation effect is better, the welding temperature will not go up), if it is not successful, wipe it clean and repeat to step 2. (More practice here) After soldering, use metal tweezers to help dissipate the heat, and be careful to burn it.
4. After soldering as shown above, wipe off the excess tin paste, and turn it on the other side as 234.
5. Finished, connect the power supply to try! It is recommended to buy a few circuit boards to make a test circuit by yourself.
Soldering method of SMD LED lamp beads
One, manual welding
1. It is recommended to use reflow soldering under normal conditions, and manual soldering only when repairing is needed.
2. The maximum power of the electric soldering iron used for manual soldering should not exceed 30W, the soldering temperature should be controlled within 300℃, and the soldering time should be less than 3 seconds.
3. Do not touch the soldering iron soldering tip to the SMD LED lamp bead gel to avoid high temperature damage to the LED lamp bead.
4. When the pin is heated to 85℃ or higher than this temperature, the SMD LED lamp bead cannot be pressed, otherwise the gold wire will be easily disconnected.
2. Reflow soldering
1. The peak temperature of reflow soldering: 260℃ or lower than this value (the surface temperature of the lamp bead).
2. The time required for the temperature to rise above 210°C: 30 seconds or less.
3. Reflow soldering is generally performed once, and no more than twice at most.
4. After reflow soldering, the LED lamp beads need to be cooled to room temperature before they can touch the surface of the LED gel.
