The Printed circuit board (PCB) is divided into Single-Sided Boards,Double-Sided Boards and Multi-Layer Boards.
The first is Single-Sided Boards,on the most basic PCB, where the parts are concentrated on one side and the wires on the other.Because the wire is only on one side, it is called Single-Sided Boards,the Single-Sided Boards is usually simple to make and low in cost, but the disadvantage is that it cannot be applied to too complex products.
The Double-Sided Boards is an extension of the Single-Sided Boards,and when the single-layer wiring cannot meet the needs of the electronic product, Double-Sided Boards are used.Both sides are covered with copper wire, and can pass through the hole to guide the line between the two layers so as to form the required network connection.
Multi-Layer Boards is a printing plate that has three layers of conductive graphic layer and the insulating material in between, and the conductive graph is interlinked according to the requirement.The multilayer circuit board is the product of the development of electronic information technology to high speed, multi-function, large capacity, small volume, thin type and light weight.
According to the characteristics, the printed circuit board is divided into flexible board (FPC), rigid board (PCB), flexi and rigid board (FPCB).
The printed circuit boards are mainly composed of welding pads, holes, mounting holes, wires, components, connectors, fillers, electrical boundaries, etc.
The main functions of each component are as follows:
Welding pad: a PTH hole used for welding the pin of a component.
Through hole: PTH through hole and NPTH through hole, the PTH through hole is used to connect the components between the components.
Mounting holes: used for fixed printed circuit boards.
Wires: electrical network copper film used to connect the pins of components.
Connector: a component used for connecting a printed circuit board.
Fillers: copper applied to the ground wire network can effectively reduce impedance.
Electrical boundary: used to determine the size of the printed circuit board, and no components on the printed circuit board can exceed the boundary.
In brief, the printed circuit board base material mainly includes three major raw materials such as copper foil, resin, and reinforcing material.
FR-4 is a common material for printed circuit board (PCBs),and has many grades and types such as TG130, TG150，High TG 170 and 180 etc,most printed circuit boards are manufactured using glass-reinforced epoxy laminate as the substrate,while there are a wide variety of laminates available on the market,FR-4 is both versatile and well-accepted as a standard material for PCB manufacture. FR-4 functions well as an electrical insulator, and has a good strength-to-weight ratio, and is flame resistant.
With the increasingly fierce competition in the market,in line with the principle of “high management, strict requirements, high quality, and excellent service“, and exerting its advantages in market, technology, and talents, KingSong provides our customers with the best quality and fast products and services.