PCB is the abbreviation of Printed Circuit Board in English. Conductive patterns made of printed circuits, printed components, or a combination of the two on insulating materials according to a predetermined design are usually called printed circuits. The conductive pattern that provides electrical connection between components on an insulating substrate is called a printed circuit. In this way, the finished board of the printed circuit or printed circuit is called a printed circuit board, and is also called a printed circuit board or a printed circuit board. On the most basic PCB, parts are concentrated on one side, and wires are concentrated on the other side. Because the wires only appear on one side, we call this PCB a single-sided PCB. Because the single-sided PCB has many strict restrictions on the design of the circuit, because there is only one side, the wiring cannot be crossed and must be routed by its own path.
The single-sided PCB is almost inseparable from the electronic equipment we can see, ranging from electronic watches, calculators, general-purpose computers, to computers, communications electronic equipment, military weapon systems, as long as there are electronic devices such as integrated circuits, PCBs are used for electrical interconnection between them. It provides mechanical support for the fixed gathering of various electronic components such as integrated circuits, realizes wiring and electrical connection or electrical insulation between various electronic components such as integrated circuits, and provides required electrical characteristics, such as characteristic impedance. At the same time, it provides soldering resistance graphics for automatic soldering; and provides identification characters and graphics for component insertion, inspection and maintenance.
Printed single-sided PCB is generally made of foil-clad laminates, commonly used is copper-clad laminates. The selection of plates should be considered from the aspects of electrical performance, feasibility, processing requirements, and economic indicators. Commonly used copper-clad laminates include copper-clad phenolic paper laminate, copper-clad epoxy paper laminate, and copper-clad Foil epoxy glass cloth laminate, copper-clad epoxy phenolic glass cloth laminate, copper-clad polytetrafluoroethylene glass cloth laminate, and epoxy glass cloth for multilayer printed wiring boards.
Single-sided PCB sheet characteristics
Because epoxy resin has excellent adhesion to copper foil, the adhesion strength and working temperature of copper foil are high, and it can be immersed in 260 ° C molten tin without blistering. Epoxy resin impregnated glass cloth laminates are less affected by moisture. The best material for UHF printed circuit is copper-clad PTFE glass cloth laminate. In electronic equipment with flame retardant requirements, flame-retardant copper-clad laminates are also used. The principle is that the insulating paper or glass cloth is impregnated with non-flammable or flame-retardant resin to make the copper-clad phenolic paper Quality laminates, copper-clad epoxy paper laminates, copper-clad epoxy glass cloth laminates, copper-clad epoxy phenolic glass cloth laminates, in addition to the similar performance of similar copper-clad laminates, Flame retardant.
started by kbojezhang44 on 09 May 20
PCB is the abbreviation of Printed Circuit Board in English. Conductive patterns made of printed circuits, printed components, or a combination of the two on insulating materials according to a predetermined design are usually called printed circuits. The conductive pattern that provides electrical connection between components on an insulating substrate is called a printed circuit. In this way, the finished board of the printed circuit or printed circuit is called a printed circuit board, and is also called a printed circuit board or a printed circuit board. On the most basic PCB, parts are concentrated on one side, and wires are concentrated on the other side. Because the wires only appear on one side, we call this PCB a single-sided PCB. Because the single-sided PCB has many strict restrictions on the design of the circuit, because there is only one side, the wiring cannot be crossed and must be routed by its own path.
The single-sided PCB is almost inseparable from the electronic equipment we can see, ranging from electronic watches, calculators, general-purpose computers, to computers, communications electronic equipment, military weapon systems, as long as there are electronic devices such as integrated circuits, PCBs are used for electrical interconnection between them. It provides mechanical support for the fixed gathering of various electronic components such as integrated circuits, realizes wiring and electrical connection or electrical insulation between various electronic components such as integrated circuits, and provides required electrical characteristics, such as characteristic impedance. At the same time, it provides soldering resistance graphics for automatic soldering; and provides identification characters and graphics for component insertion, inspection and maintenance.
Single-sided PCB sheet introduction
Printed single-sided PCB is generally made of foil-clad laminates, commonly used is copper-clad laminates. The selection of plates should be considered from the aspects of electrical performance, feasibility, processing requirements, and economic indicators. Commonly used copper-clad laminates include copper-clad phenolic paper laminate, copper-clad epoxy paper laminate, and copper-clad Foil epoxy glass cloth laminate, copper-clad epoxy phenolic glass cloth laminate, copper-clad polytetrafluoroethylene glass cloth laminate, and epoxy glass cloth for multilayer printed wiring boards.
Single-sided PCB sheet characteristics
Because epoxy resin has excellent adhesion to copper foil, the adhesion strength and working temperature of copper foil are high, and it can be immersed in 260 ° C molten tin without blistering. Epoxy resin impregnated glass cloth laminates are less affected by moisture. The best material for UHF printed circuit is copper-clad PTFE glass cloth laminate. In electronic equipment with flame retardant requirements, flame-retardant copper-clad laminates are also used. The principle is that the insulating paper or glass cloth is impregnated with non-flammable or flame-retardant resin to make the copper-clad phenolic paper Quality laminates, copper-clad epoxy paper laminates, copper-clad epoxy glass cloth laminates, copper-clad epoxy phenolic glass cloth laminates, in addition to the similar performance of similar copper-clad laminates, Flame retardant.