Heating uses a laser as the heat source to melt Solder paste during laser soldering. Its main feature is that the laser energy can be fully converted to complete the entire process of rapid heating and soldering in a local or fine area. Solder paste manufacturer Compared with traditional laser soldering, SMT Soldering methods have irreplaceable advantages.

When using a traditional Reflow Soldering oven, the soldering temperature required for the electronic components rises rapidly, thereby causing the components to overheat. Some thin and heat-sensitive electronic components may be damaged.

In addition, the excessively long heating time of the overall heating method can easily lead to coarsening of the grain structure of the soldered metal materials and diffusion of chemical substances between the metal materials, reducing the fatigue life of the solder joints. Laser soldering is a reflow soldering method with local heating, which can effectively avoid the above problems.

The laser beam can be focused onto a tiny spot. The laser energy is confined within a small spot range, which can complete the heating of the soldering area, and thermal shock damage to heat-sensitive electronic components can be avoided.

The energy input to the soldering area can be precisely controlled, which is crucial for the quality and reliability of the surface-mount solder joint connection.

Laser soldering can heat only the soldering area, while the substrate between the leads is not heated or its temperature rise is much lower than that of the soldering area, which prevents the Solder Paste from bridging between the leads. Therefore, the occurrence of bridging defects can be effectively avoided.

Laser Solder paste soldering is divided into two steps: after solder paste is applied in the standard way, soldering is carried out by laser. The laser heats the solder paste, and the solder joint is also heated. Eventually, the laser solder paste commonly used for soldering is completely melted, and the solder paste fully wets the pad, forming a good solder joint.

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