The performance and technical requirements of the circuit board of the PCB processing manufacturer are related to the structure type of the circuit board and the selected substrate. PCB boards of different types (rigid and flexible), different structures (single-sided, double-sided, multi-layer, with or without blind vias, buried vias, etc.) and different substrates have different performance indicators. Its performance level, like product design, is usually divided into three levels according to the scope of use. PCB manufacturers describe the complexity of the product, the degree of functional requirements, and the frequency of testing and inspection. The acceptance requirements and reliability levels of products with different performance levels increase according to the level.

　　Level 1 - General electronic products: mainly consumer electronic products and some computers and their peripheral equipment. There are no strict requirements on the appearance of this type of PCB board. The main requirement is that it should have complete circuit functions and can meet the requirements of use.

　　Level 2 - Specialized service electronic products: including computers, communication equipment, complex commercial electronic equipment, instruments, meters and some products that are not very demanding for their use. This type of product requires a long life and requires uninterrupted work, but the working environment is not harsh. It is allowed that the appearance of some products is not perfect but the performance should be intact and have a certain reliability.

　　Level 3 - High Reliability Products: Includes equipment with stringent continuous performance requirements, equipment that does not allow downtime during operation, and equipment used for precision weapons and life support. PCB processing printed boards not only have complete functions, but also require uninterrupted work and normal work at any time. They have strong environmental adaptability, and should have a high degree of safety and reliability. For such products, strict quality assurance measures should be taken from design to product acceptance, and some reliability tests should be done if necessary.

　　Not all the performance requirements of PCB suppliers of different levels processed from PCB boards are different. Some performance requirements are the same, and some performance indicators have different requirements for strictness and accuracy, tolerance and reliability. The performance requirements of PCB processing manufacturers mainly include appearance, size, mechanical properties, physical properties, electrical properties, chemical properties and other properties. The following will be based on the IPC-A-600G and IPC-6011 series standards, and introduce the performance of these aspects. The performance indicators that are not specifically stated are the same for all levels of products, and different requirements will be explained separately.

　　In order to more clearly show the quality status of the product at the time of acceptance and give a more intuitive description, the quality status of the printed board is divided into three statuses: ideal, accepted and rejected in the IPC-A-600G standard:

　　Ideal state: A desired state, close to perfect but also achievable. In fact, since the design quality and processing level of printed board graphics are generally not easy to achieve, the ideal state is not a necessary requirement for acceptance.

　　Receiving status: It is the basic requirement to ensure the necessary functional integrity and reliability of the PCB board manufacturer under the conditions of its use, but it is not necessarily perfect, and it is the basic condition for product reception. The acceptance status of products of different grades, some items are the same, and some items are different, are specifically explained in the text.

　　Rejected Condition: A condition that exceeds the minimum requirements for acceptance, and the printed board in this condition is insufficient to guarantee the performance and reliability of the product under the conditions of use. For different grades of products and different acceptance items, the conditions for rejection may be different.

Read recommendations:

High frequency PCB

Six-layer Immersion Gold Board (BGA)

Six-layer Immersion Gold Board (BGA)

Mobile phone board

Production process of HDI circuit boards and multilayer circuit boards