SZFitech

 Laser solder paste, as an advanced soldering material, has demonstrated significant advantages and promising development potential in the field of electronic interconnection. The following provides a brief analysis of its application from the perspectives of working principles, advantages, application areas, and future development trends. 1. Principle of Laser Solder Paste The soldering process of laser solder paste is based on the use of a laser as a highly efficient heat source. First, a specially formulated solder paste is precisely applied to the target solder joint area. Then, a laser beam is used to rapidly and accurately heat the paste, causing the solder particles to melt within a very short time. The molten solder flows under the action of the laser, filling the joint area, and subsequently cools and solidifies quickly to form a stable and reliable connection. During this process, the laser beam generates localized high temperatures on the solder past...

  Epoxy solder paste (solder adhesive) and conventional solder paste differ significantly in composition, performance, and application scenarios. The following is a detailed comparative analysis: 1. Composition Differences: Formulation Logic Determines Functional Positioning Solder Paste Core components: Metal alloy powder (83%–90%) + flux (10%–17%). Metal powder: Mainly lead-free alloys (e.g., SAC305, Sn99.3Cu0.7). Particle size is selected based on precision requirements (Type 3: 25–45 μm for mass production; Type 6: 5–15 μm for fine-pitch packaging). Flux: Composed of rosin resin (provides tackiness), organic amine activators (remove oxides), and alcohol/ether solvents (adjust viscosity). Post-soldering residue must be controlled below 5%, and some no-clean types can directly meet RoHS requirements. Functional positioning: Focused on “efficient formation of metallurgical joints.” The resin mainly provides temporary fixation during solder paste transfer, while the fi...