A circuit board generally refers to a circuit board.
The names of the circuit boards are: circuit boards, PCB boards, aluminum substrates, high frequency boards, thick copper boards, impedance boards, PCBs, ultra-thin circuit boards, ultra-thin circuit boards, and printed (copper etching) circuit boards. The circuit board makes the circuit miniaturized and intuitive, and plays an important role in mass production of fixed circuits and optimization of electrical layout. The board can be called a printed circuit board or a printed circuit board, and the English name is (Printed Circuit Board) PCB.
First, the circuit board material
Generally, the substrate materials for printed boards can be divided into two categories: rigid substrate materials and flexible substrate materials. An important variety of general rigid substrate materials is copper clad laminates. It is made of Reinforeing Material, impregnated with resin adhesive, dried, cut, laminated, and then coated with copper foil, using steel plate as a mold, and processed by high temperature and high pressure forming in a hot press. Into. The prepreg for general multi-layer board is a semi-finished product of the copper-clad board in the production process (mostly glass cloth is impregnated with resin and dried).
Second, the circuit board classification
According to the number of layers, the circuit board is divided into three major categories: single panel, double panel, and multilayer circuit board.
1. Single panel, on the most basic PCB, the parts are concentrated on one side, and the wires are concentrated on the other side. Because the wire only appears on one side, it is called a single-sided circuit board. Single panels are usually simple to make and low in cost, but the disadvantage is that they cannot be applied to products that are too complicated.
2. The double panel is an extension of the single panel. When the single layer wiring cannot meet the needs of the electronic product, the double panel is used. Both sides have copper-clad traces, and the vias can be used to conduct the lines between the two layers to form the desired network connection.
3. A multi-layer board refers to a printed board having three or more layers of conductive pattern layers laminated therebetween with insulating materials interposed therebetween, and conductive patterns interposed therebetween as required. Multi-layer circuit boards are the product of the development of electronic information technology in the direction of high speed, multi-function, large capacity, small volume, thinness and light weight.