What is a PCB in Electronics?

The circuit board is a component required by all electronic devices. It plays a decisive role in the normal use of the device. What is the wiring board and wiring board? When understanding the role of the circuit board, we need to understand some basic concepts, main structures and other related knowledge of the lower line board.

Circuit board definition:

In the designed material, it is designed to be designed as a printed circuit, a combination of printed elements, or a combination of two combinations. Conductive patterns of electrical connections between components are provided on the insulating substrate, which are called printing lines. In this way, the finished printed circuit board or printed circuit board is called the printed circuit board, also known as the printed circuit board or printed circuit board.
The names of the circuit board include: circuit board, PCB board, aluminum substrate, high frequency board, thick copper plate, impedance board, PCB, ultra-thin circuit board, ultra-thin circuit board, printing (copper carving technology) circuit board, etc. The circuit board makes the circuit refined and intuitive, and the clear layout makes product production optimization more reasonable. The circuit board may be referred to as a printed circuit board or a printed circuit board.

Circuit board structure:

Printing circuit board is mainly composed of pads, perforations, mounting holes, wires, components, fillers, etc. The main functions are as follows:
Pad: Metal holes used for welding component pins.
Horcho: Metal holes used to connect component pins between layers.
Installation holes: used for fixed printed circuit boards.
Route: Electric network copper film for connecting component pins.
Fill: Copper applied to the ground network can effectively reduce impedance.

 

Raw material of the circuit board

 

The raw materials of the circuit board are divided into: glass fiber, CEM-1, CEM3, FR4, etc. The source of this material is visible in everyday life. For example, the core of fireproof cloth and fire felt is glass fiber. We immersed the tight and strong glass fiber cloth in the resin, and the hardening obtained the PCB substrate that is insulated and not easy to bend – if the PCB board is broken, the edges are white layers, which proves that the material is the resin as the resin.

Classification

 

If the circuit board is divided into three main categories: single panel, double panel, and multi-layer circuit board,

1. Single panels, on the most basic PCB, parts are concentrated on one side, and the wires are concentrated on the other side. Because the wire only appears on one side, this PCB is called a single-sided line board. Single panels are usually simple and low in cost, but the disadvantage is that they cannot be applied to overly complex products.

2. The double panel is an extension of a single-eye panel. When the single-layer wiring cannot meet the needs of electronic products, the double panel must be used. Both sides have copper covering and wiring, and can be used to drive the line between the two layers through holes to form the required network connection.

3. Multilayer board means a printed board having an insulating material having a conductive pattern layer of more than three layers and the insulating material therebetween, and the conductive pattern is interconnected as required. Multi-layer wiring board is the product of the development of electronic information technology towards high speed, multifunctional, large capacity, large volume, small volume, thin, lightweight direction.

Route board function:

In the circuit, the circuit mainly plays the role of wires and a fixed role in the era of the electronic tube. There is no circuit board. The components are relatively large. At that time, many welded racks were used to fasten components. Connect with a wire. There are many wires that have been tied together for a long time. The circuit board allows the circuit to be mini and intuitive. It plays an important role in batch production and optimization of fixed circuit electrical appliances. It has an insulating board with a connecting conductor and fastens the electronic component to it and connects to the circuit. Simple, for example, can be understood as this. The circuit board is the carrier of electronic components.