What are the layout skills of pcb layout? What is the pcb placement order?

Someone asked about the PCB layout. Today, I would like to introduce to you that PCB Layout is the PCB layout. To achieve the best performance of electronic circuits, the layout of electronic components and the wiring of wires are very critical. To make PCB have good quality, low cost and high performance, the design should focus on the layout link. Next, let me introduce the layout skills of pcb layout? What is the pcb placement order?

1、 What are the layout skills of pcb layout?

1. Arrange the position of each functional circuit unit according to the circuit flow, so that the layout is convenient for signal flow and the signal is kept in the same direction as far as possible.

2. The layout is centered on the core components of each functional unit. The components shall be uniformly, integrally and compactly arranged on the PCB board to minimize and shorten the leads and connections between components.

3. For the circuit working at high frequency, the distribution parameters between components shall be considered. In general, components shall be arranged in parallel as far as possible, which is not only beautiful, but also easy to install and mass produce.

PCB board

(1) Special components and layout design

① In PCB board, special components refer to key components in high-frequency part, core components in circuit, easily interfered components, components with high voltage, components with high heat, and some heterosexual components. The location of these special components needs to be carefully analyzed to make the belt layout meet the requirements of circuit functions and production requirements. Improper placement of them may cause circuit compatibility problems and signal integrity problems, which may lead to PCB design failure.

② In the design of how to place special components, first consider the size of PCB board. When the PCB size is too large, the printing line is long, the impedance increases, the dry resistance decreases, and the cost increases; If it is too small, the heat dissipation is poor, and adjacent lines are easily disturbed. After determining the size of PCB, determine the swing position of special components. Finally, all components of the circuit are arranged according to the functional unit. The location of special components shall generally comply with the following principles:

1. Shorten the connection between high-frequency components as much as possible, and try to reduce their distribution parameters and mutual electromagnetic interference. Components susceptible to interference shall not be too close to each other, and the input and output shall be as far away as possible. What are the layout skills of PCB assembly and PCB processing manufacturers to explain the PCB layout? What is the pcb placement order?

2. Some components or wires may have high potential difference, so their distance shall be increased to avoid accidental short circuit caused by discharge. High voltage components should be kept out of reach.

3. Components weighing more than 15G can be fixed with brackets and then welded. Those heavy and hot components should not be placed on the circuit board, but on the bottom plate of the main box, and heat dissipation should be considered. Thermal components shall be far away from heating components.

4. For the layout of adjustable components such as potentiometers, adjustable inductance coils, variable capacitors, microswitches, etc., the structural requirements of the whole wrench should be considered. Some switches that are often used should be placed where they are easily accessible when the structure allows. The layout of components should be balanced, and the density should be appropriate.

For the success of a product, the first is to pay attention to the internal quality. It is necessary to give consideration to the overall beauty. Only the perfect wrench of both can become a successful product.

2、 What is the pcb placement order?

1. Place components that closely match the structure, such as power sockets, indicator lights, switches, connectors, etc.

2. Place special components, such as large components, heavy components, heating components, transformers, ICs, etc.

3. Place small components.

The above is my opinion on "What are the layout skills of pcb layout? What is the order of pcb placement?" The introduction of, provide for everyone to refer to, wish everyone a happy life!