Fumax

Common technical issues with custom PCB MCU control boards

When customizing PCB MCU control boards, select experienced PCB board designers and manufacturers to conduct in-depth technical exchanges and communications to ensure that the customized PCB boards can meet actual needs. At the same time, the customized PCB board also needs to be rigorously tested and verified to ensure its quality and reliability.

Chinese company providing customized PCB MCU control board

Fumax Company is a company engaged in the design, assembly and manufacturing of Printed Circuit Board (PCB). Able to provide one-stop service from circuit board design to manufacturing.

Fumax PCB Company’s main services include circuit board design, manufacturing and testing. In terms of circuit board design, PCB companies can provide personalized design solutions according to customer needs, including single-panel, double-panel, multi-layer board and other different types of design solutions. In terms of manufacturing, PCB companies usually use advanced production processes and equipment to provide high-precision, high-quality circuit board manufacturing services. In terms of testing, PCB companies will conduct strict testing and verification of circuit boards to ensure their quality and reliability.
Below we will introduce common technical issues about customizing PCB MCU control boards.

Principles and details of custom PCB MCU control board

The design principles and details of the customized PCB MCU control board are as follows:

1. Component layout: In terms of component layout, related components should be placed as close as possible. For example, clock generators, crystal oscillators, and CPU clock inputs are prone to noise and should be placed close to them. For those devices that are prone to noise, small current circuits, large current circuit switching circuits, etc., try to keep them away from the logic control circuits and storage circuits (ROM, RAM) of the microcontroller. If possible, these circuits can be made into separate circuit boards. , which is beneficial to anti-interference and improves the reliability of circuit operation.
2. Decoupling capacitors: Decoupling capacitors should be installed next to key components such as ROM, RAM and other chips. Printed circuit board traces, pin connections, wiring, etc. may contain large inductance effects, and large inductance may cause severe switching noise spikes on the Vcc trace. The only way to prevent switching noise spikes on the Vcc trace is to place a 0.1uF electronic decoupling capacitor between VCC and power ground. If the circuit board is using surface mount components, you can use chip capacitors directly next to the components and fixed on the Vcc pin. Using ceramic capacitors is a good choice because they have low electrostatic losses (ESL) and high-frequency impedance, and their dielectric stability over temperature and time is also very good. Try to avoid using tantalum capacitors because of their higher impedance at high frequencies.

How to select materials for PCB MCU?

When selecting materials for PCB MCU, you need to consider the following factors:

1. Dielectric constant: Dielectric constant is an important parameter to measure the insulation performance of materials against electrical signals. In high-frequency signal processing, low dielectric constant materials can reduce signal transmission delays and losses. Therefore, materials with appropriate dielectric constants need to be selected based on application requirements.
2. Heat resistance: PCB MCU materials need to have good heat resistance and be able to maintain stable working conditions at higher temperatures. Therefore, when selecting materials, the thermal expansion coefficient and temperature resistance level of the material need to be considered.
3. Mechanical strength: The material of PCB MCU needs to have sufficient mechanical strength and be able to withstand external forces, such as vibration, impact, etc. Therefore, when selecting materials, the Young’s modulus and flexural strength of the material need to be considered.
4. Cost: Different materials have different costs, so you need to choose the appropriate material according to your budget. When considering cost, you need to consider the price of materials, processing costs, maintenance costs, etc.
5. Manufacturability: PCB MCU materials need to have good manufacturability and can be easily processed and manufactured. Therefore, when selecting materials, it is necessary to consider the machinability of the material, the ease of surface treatment, etc.

To sum up, the selection of PCB MCU materials needs to consider multiple factors such as dielectric constant, heat resistance, mechanical strength, cost and manufacturability. The appropriate material needs to be selected based on specific application needs and budget.

What information do I need to provide to customize the PCB MCU control board?

When customizing the PCB MCU control board, you need to provide the following information:

1. MCU control board circuit diagram: Provides circuit diagram, including MCU model, function and connection relationship with other circuits, etc.
2. Components list (BOM list): Provides a component list, including the model, specification, quantity and other information of each component.
3. Layout diagram: Provides a layout diagram, including information such as the location, direction, and relative position of the MCU to other devices.
4. Wiring diagram: Provide wiring diagram, including power supply, grounding, signal line routing, line width, spacing and other information.
5. Other requirements: According to specific requirements, other information can also be provided, such as product instructions, test reports, etc.

When customizing the size specifications of the MCU PCB board, the following factors need to be considered:

1. Component layout: According to the circuit diagram and component list, reasonably arrange the layout of the components, including the location, direction, and relative position of the MCU to other devices, etc.
2. Board layer design: Design the number of layers of the PCB board and the layout of each layer based on the circuit characteristics and functional requirements.
3. Signal integrity: Considering the integrity and transmission rate of the signal, rationally design the routing and line width of the signal line to ensure stable signal transmission.
4. Power supply and grounding: According to the power demand and grounding requirements, design the power supply and grounding layer to ensure the stable supply of power and the reliability of grounding.
5. Thermal design: Design an appropriate heat dissipation solution based on the MCU’s operating temperature and heat dissipation requirements, and select the size of the PCB board based on the heat dissipation requirements.
6. Production process: Consider the production process and manufacturing cost, and select the appropriate PCB board material and production process.
7. Mechanical structure: According to the mechanical structure requirements, design the shape and size of the PCB board to ensure coordination with the mechanical structure.
8. Testing and debugging: Consider the needs of testing and debugging, and design appropriate test points and debugging interfaces.

In summary, the size specifications of customized MCU PCB boards need to be customized according to actual needs and design requirements, and comprehensive consideration is given to component layout, board layer design, signal integrity, power supply and grounding, thermal design, production process, mechanical structure and Testing and debugging and other factors. It is recommended that when choosing a manufacturer, you have in-depth communication with professional PCB board designers to ensure that the customized MCU PCB board can meet actual needs.

MCU (Microcontroller Unit) PCB board size specifications

There is no fixed standard for the size specifications of MCU PCB boards, and they can be customized according to actual needs and design requirements.

When choosing the size of your MCU PCB board, you need to consider the following factors:

1. Functional requirements: According to the functional requirements of the MCU, determine the size specifications of the PCB board. If the functions are complex and require more components, you need to choose a larger PCB board size.
2. Mechanical structure: The MCU PCB board needs to match the mechanical structure, so the overall dimensions and mechanical structure requirements of the PCB board need to be considered.
3. Production process: The larger the size of the PCB board, the more complex the production process and the higher the manufacturing cost. Therefore, when selecting the size of the MCU PCB board, the production process and manufacturing cost need to be considered.
4. Heat dissipation requirements: If the MCU has a high operating temperature, you need to consider heat dissipation issues, choose a suitable heat dissipation solution, and select the size of the PCB board according to the heat dissipation requirements.

To sum up, the size specifications of the MCU PCB board need to be customized according to actual needs and design requirements. If you have needs, please contact us.

Electronics manufacturer customizing PCB MCU control boards in China

Fumax is an electronic manufacturing service provider in China, providing PCB assembly, PCB layout, PCB design, Reverse engineering and other services; multi-layer PCB board, single-layer PCB board manufacturing services, flexible PCB board, rigid PCB board, soft-hard combination PCB board (rigid-flex composite board) assembly and design technical support.

Fumax PCBA is a global electronics manufacturing service provider and one of the important manufacturers in the field of prototype PCB circuit board assembly, PCB manufacturing and design in China. It specializes in circuit board PCB assembly and manufacturing. Its PCB circuit boards are used in mobile phones, computers, PCB LED lighting, computer parts, communication equipment, household appliances, consumer products, etc. Its products include high-frequency PCB circuit boards, rigid-flex PCB circuit boards, flexible PCB circuit boards, metal-based PCB circuit boards, multi-layer PCB circuit boards and high-density interconnect PCB circuit boards (HDI). If you need electronic product PCB assembly and manufacturing services, please contact us. To learn more about Chinese PCB manufacturers, please contact us. We provide professional technical communication and one-stop service for PCB and PCBA.