SMD led lamp beads manufacturers have summarized the following 5 elements to pay attention to when using commonly used lamp beads, I hope it will be helpful when you use SMD led lamp beads!

1. SMD LED lamp bead pin forming method

1. It needs to be 2 mm away from the colloid to bend the bracket.

2. The bracket forming needs to be completed before welding.

3. The forming of the bracket needs to ensure that the pins and spacing are consistent with the circuit board.

2. Pay attention to the bending and cutting of the SMD LED lamp beads

Because the design needs to bend and cut the feet, when bending and cutting the SMD LED lamp bead, the position of the bending and cutting feet is greater than 3mm from the bottom surface of the colloid. Bending should be done before welding. When using SMD LED lamp beads to insert lamps, the spacing between the holes of the PCB board should correspond to the spacing between the SMD LED lamp beads. When cutting feet, high voltage static electricity is generated due to the vibration and friction of the cutting machine, so the machine should be grounded reliably and anti-static work should be done well.

3. SMD LED lamp bead cleaning

Special care should be taken when cleaning the gel with chemicals, as some chemicals can damage the surface of the gel and cause discoloration such as trichloroethylene, acetone, etc. It can be wiped and impregnated with ethanol, and the time should not exceed 3 minutes at room temperature.

Fourth, SMD LED lamp beads lamp beads over-current protection

The overcurrent protection function is to connect a protection resistor in series with the SMD LED lamp bead to make it work stably

The formula for calculating resistance value is: R=(VCC-VF)/IF

VCC is the power supply | voltage regulator, VF is the driving voltage of the SMD LED lamp bead, IF is the forward current

5. SMD LED lamp bead welding conditions

Soldering iron welding: The temperature of the tip of the soldering iron (higher 30W) should not exceed 300 °C, the welding time should not exceed 3 seconds, and the welding position should be at least 2 mm away from the colloid.