The quality control principle of the mixed assembly process of leaded solder and leaded and lead-free components

The quality control principle of the mixed assembly process of leaded solder and leaded and lead-free components

(1) Selection of welding materials. ① Solder alloy: Select Sn-37Pb eutectic alloy. Alloy composition is a key parameter that determines the melting point of solder and the quality of solder joints. Eutectic or near-eutectic alloy should be selected as far as possible. Choosing a eutectic alloy has the following benefits: ●  The eutectic alloy has …

Anti-static bag function of PCB board Principle of anti-static shielding bag

Anti-static bags for PCB boards can protect electrically sensitive components from potential electrostatic hazards to a large extent. The unique four-layer structure of the PCB anti-static bag can form an induction effect to protect the contents of the bag from the electrostatic field. In addition, the inner layer is made of vinyl that can eliminate …

How do I choose a PCB material?

How to choose PCB material (1)

Most electronic products use FR4 epoxy glass fiber substrates. For high ambient temperature or flexible circuit boards, polyimide glass fiber substrates are used. For high-frequency circuits, PTFE glass fiber substrates are required; for heat dissipation High-demand electronic products should use metal substrates. Factors to consider when choosing PCB materials: (1) A substrate with a higher …

What is the best material planning for a pcb manufacturer?

What is the best material planning for a pcb manufacturer?

The importance of an efficient pcb production plan cannot be underestimated because it has a long way to go in optimizing production and balancing production lines. Therefore, the demand for PCB manufacturing is a powerful design data, including PCB layout data, component bills of materials, usually referred to as BoM and other auxiliary materials. In …