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PCB Circuit Board Salesman Essential Knowledge(四)

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I. The principle of printed circuit boards: 

Understand how the PCB circuit board is the use of electrical wires to link the various components to achieve the purpose of controlling the current, so as to achieve the normal operation of electronic devices.

PCB circuit board is the use of electrical wires to connect the components of the key components, it plays a vital role in electronic devices. The following is a detailed explanation of how PCB circuit boards use electrical wires to link components, control current, and realize the normal operation of electronic devices:

Component layout and connection:

At the beginning of the PCB design, engineers carefully consider where and how each component is connected to ensure that current can flow efficiently and steadily.

Components are precisely placed on the PCB and connected to other components or circuits via electrical leads.

Role of Electrical Conductors:

Electrical conductors are the main connection medium on the PCB and they are responsible for transferring current from one component to another.

The width, length and choice of material of the conductors affect the efficiency and stability of current transfer.

Current Control:

By accurately designing the path and layout of the wires, PCBs can control the direction and magnitude of current flow.

Electronic components such as resistors, capacitors and inductors are used to regulate the magnitude of the current, stabilize the voltage or filter out noise to ensure the proper functioning of electronic devices.

Signal Transmission:

In addition to providing power to components, electrical conductors are also responsible for transmitting signals.

In complex electronic systems, signals need to be transmitted quickly and accurately between different components, which relies on high-quality conductor design on the PCB.

Layered design:

PCBs are often constructed in multiple layers, which allows for more complex connections and layouts by dividing the circuitry into different layers.

This layered design helps minimize electromagnetic interference (EMI) and cross-talk, and improves the reliability of electronic devices.

Assembly and Testing:

Once the PCB design is finalized and fabricated, components are soldered or inserted onto the PCB.

Subsequent rigorous testing and verification to ensure that the current control and signaling meets expectations, thus ensuring the normal operation of the electronic device.


J. Industry norms and regulations: 

Understand the PCB industry standards and regulations to ensure that production and sales activities in line with the provisions of the regulations to avoid the risks caused by violations.

PCB (printed circuit board) industry standards and regulations related to ensure product quality, consumer safety and promote the healthy development of the industry is of great significance. Below are some of the standards and regulations related to the PCB industry and the importance of complying with them.

International Standards

IPC Standards: IPC (International Printed Circuit Association) is the most authoritative PCB industry association worldwide and has developed a series of international standards for PCB design, manufacturing and testing. Compliance with IPC standards ensures the consistency and reliability of PCB products.

IEC Standards: The International Electrotechnical Commission (IEC) has also developed a number of international standards in the electrical and electronic fields related to PCBs. These standards address aspects of PCB safety, performance and environmental requirements.

National/Regional Regulations

Environmental regulations: There are national and regional environmental regulations on electronic products and components, such as the EU's RoHS Directive and China's Measures for the Administration of Pollution Control of Electronic Information Products. These regulations restrict the use of certain hazardous substances in PCBs to protect the environment and human health.

Product quality regulations: Countries and regions have regulations on product quality and safety that require PCB products to meet certain quality standards and safety requirements. Violations of these regulations may result in product recalls, fines and even criminal liability.

Intellectual property regulations: The PCB industry involves numerous intellectual property rights such as patents, trademarks and copyrights. Compliance with intellectual property regulations can protect innovations and avoid infringement disputes.

Industry Self-Regulation Norms

Industry association norms: PCB industry associations in various countries and regions usually formulate some self-regulatory norms, requiring member companies to comply with industry guidelines, integrity management, product quality and so on.

Corporate Social Responsibility (CSR): PCB companies should actively fulfill their social responsibilities and pay attention to employee welfare, environmental protection and sustainable development in order to enhance their corporate image and competitiveness.

Importance of compliance with regulations and standards

Avoiding the risk of non-compliance: Compliance with relevant regulations and standards can ensure that PCB companies can avoid the risks caused by non-compliance, such as fines, product recalls, and loss of reputation, in their production and sales activities.

Enhance product quality: Compliance with industry standards and regulations helps to enhance the quality and reliability of PCB products, meet customer needs and win market trust.

Promote sustainable development: Compliance with environmental regulations and industry self-regulatory norms helps to promote the sustainable development of the PCB industry and realize the coordinated development of economic, environmental and social benefits.

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