PCB is short for Printed Circuit Board. Because it is made using electronic printing, it is called a "printed" circuit board. A printed circuit board is a substrate for assembling electronic parts, and is a printed board that forms point-to-point connections and printed components on a common base material according to a predetermined design.
The main function of this product is to make various electronic components form the connection of the predetermined circuit, which plays the role of relay transmission. It is the key electronic interconnection of electronic products and is known as the "mother of electronic products". PCB is used as the substrate and key interconnection for electronic parts loading, which is required for any electronic device or product.
The selection of printed circuit board substrates should be considered in terms of electrical performance, reliability, processing requirements, and economic indicators. There are many substrates used for PCB, and there are two main categories: organic and inorganic. Organic substrates are made of reinforcing materials such as glass fiber cloth, impregnated with resin binders, dried and covered with copper foil, and made of high temperature and high pressure. Such substrates are also called copper clad laminates, inorganic substrates, mainly ceramic plates and enamel-clad steel substrates. PCBA company of HX Technology supplies both two kinds of substrates used for PCB.
1. PCBs are classified according to the rigidity and flexibility of the medium material used to make the substrate: they are divided into rigid PCBs, flexible PCBs and rigid-flex PCBs
Rigid printed circuit board refers to a printed circuit board laminated with copper foil on the surface of a substrate that is not easy to bend. It requires flatness, has a certain mechanical strength, and can play a supporting role; flexible printed circuit board refers to a printed circuit board laminated with copper foil on the surface of a flexible substrate has good heat dissipation and is ultra-thin. It can be bent, folded, rolled, and can be moved and stretched arbitrarily in three-dimensional space, so it can form a three-dimensional circuit board in three-dimensional space.
Rigid printed circuit boards and flexible printed circuit boards are combined to form rigid-flexible printed circuit boards, which are mainly used for electrical connections between rigid printed circuit boards and flexible printed circuit boards. Full form of PCBA boards are available in HX Technology.
2. PCBs are classified according to the number of layers of copper clad foils: divided into single-sided, double-sided and multi-layered boards
Single-sided refers to a printed circuit board with conductive patterns attached to only one side of the surface of the insulating substrate. Double-sided refers to a printed circuit board with conductive patterns attached to both sides of the insulating substrate. The conductors on both sides of the printed circuit base are connected by pads and vias.
Multilayer board refers to a printed circuit board in which a layer of copper foil and a layer of insulating substrate are alternately bonded after PCBA technology. If there are four layers of copper foil, it is called a four-layer board. If there are copper foils on six sides, it is called a six-layer board. The electrical interconnection between the board layers is through pads, through holes, blind holes and buried holes and so on.