product application
Almost all electronic devices we can see with a single sided PCB cannot do without it, from small electronic watches, calculators, general-purpose computers, to large computers, communication electronic devices, military weapon systems, as long as there are electronic components such as integrated circuits, PCB is used for electrical interconnection between them. It provides mechanical support for the fixed assembly of various electronic components such as integrated circuits, realizes wiring and electrical connections or insulation between various electronic components such as integrated circuits, and provides the required electrical characteristics, such as characteristic impedance. Simultaneously providing solder mask graphics for automatic soldering; Provide identification characters and graphics for component insertion, inspection, and maintenance.
Single sided PCB production process
Single sided PCB: → Single sided copper clad board → Blanking → (Brushing, drying) → Drilling or punching → Screen printing of anti etching patterns or using dry film → Curing inspection and repair → Etching of copper → Removing anti etching materials, drying → Brushing, drying → Screen printing of solder mask patterns (commonly used green oil), UV curing → Screen printing of character marking patterns, UV curing → Preheating, punching, and appearance → Electrical opening and short circuit testing → Brushing Drying → pre coating with welding aids and oxidation inhibitors (drying) or tin spraying with hot air for leveling → inspection of packaging → delivery of finished products.
Characteristics of single sided PCB board
Due to the excellent adhesion between epoxy resin and copper foil, the adhesion strength and working temperature of copper foil are high, and it can be immersed in soldering at 260 ℃ without foaming. Epoxy resin impregnated glass cloth laminates are less affected by moisture. The most excellent material for ultra-high frequency printed circuits is copper foil polytetrafluoroethylene glass cloth laminate. On electronic devices with flame retardant requirements, flame-retardant copper-clad laminates are also used. The principle is to impregnate insulating paper or glass cloth with non combustible or non combustible resin, so that the produced copper-clad phenolic paper laminates, copper-clad epoxy paper laminates, copper-clad epoxy glass cloth laminates, and copper-clad epoxy phenolic glass cloth laminates not only have similar performance to similar copper-clad laminates, but also have flame retardancy.
