What should I pay attention to when manually welding SMT SMT components with Borey Advanced?

2023-11-14


 

 

When repairing electronic products or producing small batches of samples during SMT chip processing, chip components often require manual welding. What are some things to pay attention to when manually welding SMT components? What are the differences between the soldering of SMD components and the soldering of plug-in components?

1. Differences in soldering with plug-in components

(1) Welding material: The solder wire is finer, usually using active solder wire with a diameter of 0.5-0.8mm, or solder paste can be used; Use non cleaning flux with low corrosion and no residue.

(2) Tools and equipment: Use smaller specialized tweezers and electric soldering irons, with a power of no more than 20W and a sharp cone-shaped head; If the requirements are raised, it is best to have a hot air workbench, SMT maintenance workstation, and specialized tooling available.

(3) Operators are required to proficiently master the testing and welding skills of SMT and accumulate certain work experience.

2. Welding precautions for SMD components:

(1) Before manual placement, it is necessary to apply soldering flux and solder paste to the welding area of the printed circuit board

(2) Use manual SMT mounting tools to attach SMT components, including stainless steel tweezers, suction pens, 3-5 times desktop magnifying glass or 5-20 times three-dimensional anti-static workbench, and anti-static wrist

(3) Ensure that the solder pad is clean, and there will generally be residual solder on the repaired PCB. Generally, electric soldering irons, solder wires, and solder absorbers are used. If conditions permit, a hot air workbench can also be used to blow and melt residual solder, and then a vacuum soldering pump can be used to suck the solder away.

Manual welding of SMD components, also known as manual SMD, is a method of assisting machine SMD. Ensure that when the machine is not suitable for mounting, it can smoothly carry out the mounting work. The requirement for manual placement is higher than that for plug-in welding, and it requires skilled operation skills from workers.