source:other news release time:2023-09-09 Hits: Popular:led screen wholesaler
1、 Forming Method for Directly Inserting LED Bead Pins
1. It is necessary to be 2mm away from the gel before bending the bracket.
2. The forming of the bracket must be completed before welding.
3. The forming of the bracket needs to ensure that the pins and spacing are consistent with those on the circuit board.
2、 Pay attention when bending and cutting the legs of LED lamp beads inserted directly
Due to design requirements for bending and cutting feet, when bending and cutting feet on LED, the position of the bending and cutting feet should be greater than 3mm from the bottom of the gel. Bending should be done before welding. When using LED plug-in lights, the spacing between PCB board holes should correspond to the spacing between LED pins. During foot cutting, high voltage static electricity occurs due to vibration and friction of the foot cutting machine. Therefore, the machine should be firmly grounded and anti-static operations should be carried out.
3、 Direct insertion LED lamp bead cleaning
When cleaning colloids with chemicals, special care must be taken, as some chemicals can damage the surface of the colloids and cause discoloration, such as trichloroethylene, acetone, etc. Wipe and soak with ethanol at room temperature for no more than 3 minutes.
4、 Direct insertion LED bead overcurrent protection
The overcurrent protection function is to connect a series protection resistor to the LED to ensure its stable operation
The formula for calculating the resistance value is: R=(VCC-VF)/IFVCC is the power supply | voltage regulator voltage, VF is the LED driving voltage, and IF is the forward current
5、 Welding conditions for inline LED lamp beads
Soldering iron welding: The tip temperature of the soldering iron (up to 30W) should not exceed 300 ℃, the welding time should not exceed 3 seconds, and the welding position should be at least 2 millimeters away from the colloid.
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