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Solutions and precautions for PCBA manual soldering problems

Solutions and precautions for PCBA manual soldering problems
At present, the country has higher and higher requirements for environmental protection and greater efforts in link governance. This is a challenge but also an opportunity for PCB factories. If the PCB factory is determined to solve the problem of environmental pollution, then FPC flexible circuit board products can be at the forefront of the market, and the PCB factory can get the opportunity to develop again.
1. It must be operated with an electrostatic ring. The human body can generate static electricity above 10,000 volts, and ICs above 300V will be damaged. Therefore, the human body static electricity needs to be discharged through the ground wire.

2. When operating with gloves or finger sleeves, do not directly touch the machine board and golden finger parts with bare hands.

3. When welding, there must be correct welding temperature, welding angle, welding sequence, and keep proper welding time.

pcb board

4. Take PCB correctly: When taking PCB, hold the edge of PCB correctly. Both SMT and DIP processing by pcba are ways to integrate parts on the PCB. The main difference is that SMT does not need to drill holes on the PCB. In DIP, the PIN pins of the parts need to be inserted into the holes that have been drilled. Do not touch the components on the circuit board.

5. Use low-temperature welding as much as possible: high-temperature welding will accelerate the oxidation of the iron tip and reduce the service life of the iron tip. If the iron tip temperature exceeds 470℃. The oxidation rate is twice that of 380°C.

6. Do not apply too much pressure to welding: When welding, do not apply too much pressure, otherwise the iron head will be damaged and deformed. As long as the iron tip can fully contact the solder joints, heat can be transferred. Choose different iron heads according to the size of the solder joints, which can also make the iron heads better heat transfer.

7. Do not knock or shake the iron nozzle during soldering: tapping or swinging the iron nozzle will damage the heating iron core and splashed tin beads, shortening the service life of the heating iron core. If the tin beads splash on the PCBA, a short circuit may be formed, which may lead to The electrical performance is poor.
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