Lead-free reflow soldering is because the solder paste used is lead-free environmentally friendly solder paste, and the products are lead-free environmentally friendly products. There are some differences between lead-free reflow and general lead reflow, and JEENOCE shares the main differences below.
1, the welding temperature is different: lead-free reflow welding temperature is high, and lead reflow welding temperature is low.

2, environmental protection is different: lead-free reflow environmental protection does not prohibit lead products, must be lead-free environmental protection products.

3. Different high temperature resistance: the high temperature resistance of lead-free reflow welding is better than that of lead reflow welding.

4, the lead solder alloy has low melting point, low welding temperature, less thermal damage to electronic products; The wetting Angle of lead solder alloy is small, the weldability is good, and the possibility of "false welding" of product solder joint is small; The toughness of the solder alloy is good, and the vibration resistance of the solder joint formed is better than that of the lead-free solder joint.

Lead-free reflow welding machine belongs to one kind of reflow welding. Early reflow solders were made of lead-based materials. With the deepening of environmental protection, people pay more and more attention to lead-free technology (that is, today's lead-free reflow welding). The biggest change is in the material, especially the solder. In terms of process, the biggest impact is the welding process. This is mainly caused by the characteristics of the solder alloy and the corresponding flux.