PCB Circuit Board Design Production Guide

Writing technical specifications
Preparing project specifications is an important part of PCB design. It may include technical requirements, block diagrams, deliverables, assumptions, preliminary bill of materials (BOM), and BOM costs, tools, and techniques developed for project development. The more adequate the preliminary preparation, the fewer problems you may encounter during the hardware design process. In the hardware design, the author encountered problems in the hardware design more than once and had to change the solution, even after the sample has been completed. However, it is found that some functions cannot be completed, and these problems can be avoided in the requirements design stage. Модуль Bluetooth
Schematic design
The process of PCB board design always starts with the schematic diagram. A schematic or circuit diagram conveys the electrical connections between different electrical components such as integrated circuits (ICs) and discrete components. Generally use professional CAD software, such as Altium Designer, PADS, Cadence Allegro, and other software to define the module and design the connection between different components. The schematic diagram determines the working principle of the PCB. In the schematic design stage, we need to complete the electrical connection of the hardware, and determine the package size of the device.
Printed circuit board layout
Once the schematic is imported into the PCB layout, components are manually placed and routed on the board. These dimensions may be limited by the size of the case due to consideration of the number of layers required and the size of the components. In PCB layout design, we analyze signal integrity and evaluate electrical constraints to ensure the safety of board-level architecture. For complex layouts, various simulation tools are needed to ensure signal integrity, design reliability, etc. When designing circuits, it is necessary to take some precautions to ensure that the EMC performance requirements can be met. GPRS-модуль
Once a circuit is designed and built, trying to fix EMC performance is much more difficult and expensive. Many aspects can be addressed during the circuit design and PCB layout stages to ensure EMC performance is optimized: PCB circuit design - PCB circuit partitioning - PCB grounding - PCB routing - EMC filter - I/O filtering and shielding, by taking these precautions, Can greatly improve the EMC performance of PCB layout. Circuit board design is a link in hardware development that requires a lot of effort. During the design process, many simulation tools are required for reliability design to minimize PCB design revisions, reduce development costs, and shorten the development cycle.
Printed circuit board manufacturing and testing
Once our PCB design layout is approved for production, it needs to be exported to a format supported by the manufacturer. Prepare a bill of materials (BOM) and Gerber files describing the design requirements for each image of the board. Manufacturers use this document as a reference for board fabrication and PCB assembly. For some projects, it is also necessary to create a 3D model of the PCB to ensure it will fit the enclosure. Testing is essential for both the PCB layout design service and the manufacturing phase, and on high-speed PCBs and RF boards, it is also necessary to provide manufacturers with the data and software they need to perform resistance and impedance testing. After the prototype is manufactured, it needs to be tested in-house.
Mass production
After prototype validation, prepare documentation for series production and assist the production department throughout the manufacturing process. Special software, hardware, and test procedures need to be provided to the production department. Write detailed test operation instructions and provide test indicators to ensure that all products produced and put into storage meet the standards.