Rigid PCB inspection and testing standards

Rigid PCB (printed circuit board) inspection standards are an important quality control link that ensures the functionality, reliability and consistency of the circuit board.

The following is a detailed introduction to the rigid PCB inspection standards:

Dimensional inspection

Dimensional inspection is the first step in rigid PCB inspection. Its purpose is to confirm whether the actual size of the circuit board is consistent with the design drawing.

Rigid PCB inspection and testing standards

If the size deviation is too large, it may cause incorrect installation of components or connection problems. The specific contents of dimensional inspection include:

  1. Substrate size: Check whether the length, width and thickness of the circuit board meet the design requirements.
  2. Hole diameter and drilling position: Check whether the diameter and position of the drilling holes on the circuit board are accurate and consistent with the design drawings.
  3. Pad size: Check whether the size of the pad (connection point) meets the requirements to ensure that the component can be stably soldered to the circuit board.

Visual inspection

Appearance inspection is a link to quality control the surface and appearance of rigid PCBs, which mainly includes the following:

  1. Surface treatment inspection: Confirm whether the surface treatment of the circuit board meets the design requirements, such as gold plating, silver plating, tin spraying, etc. At the same time, check whether the surface treatment is uniform and whether there are defects such as peeling, scratches, etc.
  2. Contamination inspection: Observe whether the surface of the circuit board is clean and whether there are oil, dust and other contaminants. These contaminants can affect circuit performance and reliability.
  3. Color and texture inspection: Confirm whether the color and texture of the circuit board surface meet the requirements, especially for circuit boards with special appearance requirements.

Structural inspection

Rigid PCB testing

Structural inspection is an inspection of the internal structure and connection relationships of rigid PCBs, which mainly includes the following contents:

  1. Line inspection: Use a microscope to check whether the circuit board lines are complete and clear, and there are no breaks, short circuits, etc. At the same time, check whether parameters such as line width and spacing meet the design requirements.
  2. Pad inspection: Check whether the position, size and shape of the pads are accurate and match the circuits and components.
  3. Interlayer alignment check: For multi-layer rigid PCB, it is necessary to check the interlayer alignment to ensure that the positional relationship between each layer is correct.

Performance Testing

Performance testing is the evaluation process of the actual performance of rigid PCB, which mainly includes the following contents:

  1. Electrical performance test: Use test instruments to measure the voltage and current of key nodes on the circuit board to verify whether its electrical performance meets the design requirements.
  2. Reliability performance testing: Conduct environmental tests (such as temperature cycle, humidity cycle, etc.), mechanical tests (such as vibration test, impact test, etc.) to detect the reliability and durability of the circuit board.
  3. Functional test: Functionally test the circuit board by connecting relevant components and equipment to verify whether it can achieve the expected functions.

Logo and documentation checks

Marking and document inspection are important aspects of traceability and quality control of rigid PCBs, which mainly include the following:

  1. Marking inspection: Confirm whether there are clear and accurate markings on the circuit board, including product model, batch number, production date and other information for traceability and identification.
  2. Document inspection: Check whether relevant technical drawings, inspection records, production records and other documents are complete and accurate to ensure traceability of product quality.

To sum up, the rigid PCB inspection standard is a comprehensive quality control system covering many aspects from size, appearance to performance testing.

By strictly implementing these standards, the quality and reliability of rigid PCBs can be ensured, thereby ensuring the performance and stability of the entire electronic product.

Related Posts

HDI PCB’s Advantages in Industrial electronics

Why HDI and how does it work In the realm of industrial control systems, High-Density Interconnect (HDI) Printed Circuit Boards (PCBs) have emerged as transformative components, revolutionizing the landscape of modern manufacturing and automation. HDI PCBs play a pivotal role in enhancing the functionality, reliability, and compactness of various industrial devices, facilitating an era of […]

Unveiling Circuit Card Assembly 2024: From PCB Manufacturing to Board Assembly

Hey there, tech enthusiasts! Get ready to dive deep into the fascinating world of circuit card assembly. In this comprehensive guide, we’ll take you through every meticulous step of the process, from PCB manufacturing to the final assembly of the board. So grab your coffee, settle in, and let’s explore the intricate journey of bringing […]

Optimizing High-Speed Design: Balancing Signal, Power, and EMC for Success

Editor’s Note: In modern high-speed designs, analyzing signal integrity, power integrity, and EMC separately is not enough; a holistic approach is essential for successful design. Background Issue: When signals cross over segmentation areas between adjacent reference planes on a layer, discussions about signal integrity often arise. Some argue that signals should not cross the segmentation […]

PCB copper cladding

In the PCB design process, copper cladding is an important aspect, and various PCB design software provide intelligent copper cladding functionality, which covers unused spaces on the PCB with copper. The significance of copper cladding lies in reducing ground impedance, enhancing anti-interference capability, lowering voltage drop in power traces, improving power efficiency, and connecting to […]

PCB Pad Design Guideline(2)

4.3.9 When designing multilayer boards, attention should be paid to components with metal casings that are in plug-in packages and make contact with the printed circuit board. The top layer pads must not be opened. They must be covered with green oil or silkscreen ink (such as two-pin crystals, three-pin LEDs). 4.3.10 When designing and […]

PCB Pad Design Guideline(1)

Standardize the PCB pad design process, define the relevant parameters of PCB pad design process, ensuring that the PCB design meets technical specification requirements such as manufacturability, testability, safety regulations, EMC, and EMI, and construct the advantages of process, technology, quality, and cost in product design. This specification applies to the PCB process design of […]

Exploring Precision Resistors: Introduction and Top 10 Manufacturers(Updated on 2024)

In the realm of modern electronics, precision resistors play a crucial role as key components in circuits, regulating current and voltage. Unlike standard resistors, precision resistors offer heightened accuracy and stability, making them essential for applications such as test instruments, medical devices, and aerospace technology. This article will delve into the concept of precision resistors, […]

Key to Quality: First Article Inspection in Electronics Manufacturing

In the fast-paced world of electronic manufacturing, ensuring quality and efficiency is paramount. Among the arsenal of quality control measures, First Article Inspection (FAI) stands out as a crucial step, particularly in the intricate process of printed circuit board (PCB) assembly. Let’s delve into why FAI is indispensable in electronic manufacturing and PCB assembly processes. […]

Optimizing PCB Assembly: A Seamless Customer Order Journey

In the dynamic landscape of electronics manufacturing, efficient execution of customer orders is paramount. At our state-of-the-art facility, we pride ourselves on seamlessly orchestrating the production process from inception to delivery, ensuring client satisfaction at every step. In this article, we delve into the intricate journey of a customer’s order, shedding light on how PCB […]