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Single Sided Printed Circuit Boards

PCB is the abbreviation for printed circuit board in English. Printed circuits are commonly referred to as conductive patterns made of printed circuits, printed components, or a combination of the two, based on predetermined designs on insulating materials. The conductive pattern that provides electrical connections between components on an insulating substrate is called a printed circuit. In this way, printed circuits or finished boards of printed circuits are called printed circuit boards, also known as printed boards or printed circuit boards. On the most basic PCB, the parts are concentrated on one side and the wires are concentrated on the other side. Because wires only appear on one side, we call this type of PCB a single sided PCB. Because single sided PCBs have many strict limitations in circuit design, as they only have one side, the wiring cannot intersect and must be routed independently.

    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.