pcb multilayer circuit board is used in which｜PCB Circuit Board Classification

Classification of pcb circuit board

Pcb boards are categorized into three main groups according to the number of stacked layers: single-sided boards, double-sided boards, and multilayer boards.

The first is the single-sided circuit, in the most basic PCB, the parts are centralized in this one side, the transmission line is centralized in the other side. Since the transmission lines appear only on one side, this type of PCB is called a single-sided circuit board. Single-sided PCBs are generally easy to produce and have a low construction cost, but the drawback is that they cannot be used for complicated products.

Double-sided PCB is the broadening of the single-sided PCB, when the single-sided alignment can not take into account the necessity of electronic equipment, it is necessary to apply the double-sided PCB. Both sides are copper-clad with wiring, and can be based on the pads to pass through the middle of the double layer of routes, so that it produces the necessary data connections.

Multilayer circuit board is to have three layers above the conductive pattern layer and during the insulating layer material to spacing pressure layer and become, and during the conductive pattern according to the requirements of the interconnection of the pcb board. Multilayer pcb circuit board is the electronic device information technology to high-speed operation, intelligent, large space, small volume, thin, lightweight orientation development trend of the material.

The pcb circuit board is divided into soft board (FPC), hard board (PCB), soft and hard combination board (FPCB) according to the characteristics.

Double pcb circuit board and single-sided pcb circuit board how to judge

1, take up to the light, the inner layer of the core is impermeable, that is, all black piece, is a multilayer board, on the contrary, is a single double-sided circuit board, and single-sided circuit board, only a layer of routes, holes in the edge of no copper. Double-sided circuit board is the front and back are both routes, according to the guide hole in the copper.

2, the most fundamental difference is the route stacked layers are not the same:

Single-sided pcb circuit board only one layer of route (copper layer), all holes are non-metallic material hole, no plating process steps

Two-layer pcb circuit board has a double route (copper layer), metallized holes and non-metallic materialized holes, plating process steps

3, pcb circuit board is divided into single-sided pcb circuit board, two-sided pcb circuit board and multilayer pcb circuit board, multilayer pcb circuit board is refers to the three layers and above the number of stacked layers of pcb circuit board. Multilayer pcb circuit board processing technology above the single and double-sided circuit board basically plus the internal pressure lamination process. The use of cut into pieces to walk God can also be analyzed out.

Which goods must be used in the PCB board

The electronic equipment that must be integrated to save room space, to make the goods lighter/more durable/and to achieve the very good characteristics, it is necessary to replace the previous transmission line connection and then to change to the pcb circuit board. pcb is very good to achieve the room space/characteristics and credibility of the regulations.

Not every home appliances must be circuit boards, simple home appliances can not use the power circuit such as motor. But there are special household appliances generally must be circuit boards to complete such as television, tape recorders, computers and so on many, many. The bottom of the rice cooker is also a PCB board, cooling fan in the speed motor.

What types of goods in the use of PCBs

PCB generally refers to the hard circuit board, used in like desktop computer motherboards, computer mouse boards, independent graphics cards, office supplies, copiers, printers, remote control, a variety of charging head, computing, digital cameras, tape recorders, TV motherboards, more limited TV amplifier, cell phones, automatic washing machines, electronic scales, telephone, LED lamps and lanterns, household appliances: central air-conditioning, home refrigerator, speaker, MP3; machinery and equipment, GNSS, GSM, and so on. MP3; mechanical equipment, GPS, cars, instrumentation equipment, medical equipment, airports, military equipment, cruise missiles, communication satellites and so on. (There is also a kind is APCB also do. Is also a circuit board, only soft, like flip phone connecting cover and key in the middle of the power circuit is a soft circuit board).

Cell phone motherboards, functional keyboards, is a plastic bed board; slider phone or flip phone connectivity line row is a flexible circuit board. Controller is generally carbon film board. Cell phone on the board from top to bottom are RF circuits, circuits, audio power circuits, timing logic circuits.

Generally just heating the electric kettle does not have a circuit board, the transmission line support frame immediately coupled. Vertical water dispensers also have circuit boards. Rice cookers generally have pcb circuit boards, induction cookers have pcb circuit boards, there are pcb circuit boards in electric fans, but generally play a role in variable speed, timing execution, displaying information about these roles, with the fan running no specific effect.

What goods in the use of two-layer board, what goods in the use of multilayer board?

The key to look at the characteristics of the provisions of the two-layer board is not able to consider, such as anti-interference, alignment, EMC level of the provisions of the characteristics of the two-layer board can be accomplished, do not need multilayer board.

Double layer pcb circuit board and single-sided pcb circuit board which is good

In life, multilayer board is the largest number of pcb circuit board types used at this stage, so what are the advantages of using multilayer pcb circuit board:

Multilayer pcb circuit board utilization advantages:

1, the installation of high relative density, small size, light quality, considering the light miniaturization requirements of electronic products;.

2, because the installation of high relative density, the components (including electronic devices) between the line to reduce the installation operation, high reliability;.

3, because the pattern has repeatability and consistency, reducing the alignment and installation errors and omissions, saving the maintenance of machinery and equipment, adjustment and inspection time.

4, can enhance the alignment of the stacked layers, thereby increasing the ability to coordinate the design program.

5, can form a certain characteristic impedance power supply circuit, can produce point-to-point transmission power supply circuit.

6, can set the power supply circuit, the equivalent circuit shielding off layer, can also set the metal material core heat exclusion layer to consider shielding off, heat exclusion and other special effects must be.

Accompanied by the continuous development trend of electronic information technology and electronic computers, diagnosis and treatment, airlines and other manufacturing industries to electronic products continue to enhance the provisions of the circuit board along the direction of the volume becomes smaller, the quality of relief, relative density to enhance the orientation of the development trend.

Single, two-sided pcb board because of the limitations of the indoor space can be used, has been unlikely to complete the installation of the relative density of the further enhancement, and therefore must take into account the application of the stacked layers of more degrees, assembled with a high relative density of the multilayer pcb circuit board.

Multilayer pcb circuit board with its design program flexible, smooth and reliable electrical equipment characteristics and excellent economic development characteristics, at this stage has been widely used in the production and processing of electronic equipment.