Introduction PCB trace technology is a cornerstone of modern electronic design, forming the intricate pathways that connect components on a printed circuit board (PCB). These conductive tracks ensure  electrical signals are transmitted accurately and efficiently throughout the circuit. The design and quality of PCB traces can significantly influence the performance, reliability, and functionality of electronic devices. In engineering projects, PCB traces play a critical role in defining the electrical characteristics of a circuit. Proper trace design can minimize signal loss, reduce electromagnetic interference, and enhance thermal management, leading to more robust and efficient systems. As electronic devices become more compact and complex, the precision and innovation in PCB trace technology […]

Two primary PCB assembly techniques have emerged as the electronics industry standards: Through-Hole Technology (THT) and Surface Mount Technology (SMT). This article delves into the intricacies of THT and SMT, providing a thorough comparison of their advantages, disadvantages, and applications.   Introduction to PCB Assembly Techniques Printed Circuit Board (PCB) assembly is a cornerstone of the electronics manufacturing industry. It involves the intricate placement of electronic components onto a PCB to create a fully functional printed circuit assembly (PCA), also known as a printed circuit board assembly (PCBA). This intricate process requires a high degree of precision and technical expertise. The PCB assembly journey begins with the design of the PCB […]

First Article Inspection (FAI) is a systematic sampling inspection procedure that ensures quality. It is a method of conducting inspections strictly in accordance with the requirements of the bill of materials and drawing specifications, in order to identify unknown issues and check the objectivity and accuracy of the parts themselves or in the process, in order to verify that the production, design, and supply concepts meet the final requirements. What is first article (batch) sample inspection First article sampling inspection is usually applied during the first individual assembly of the product, receipt of key components, technical changes, and regular audits to determine compliance with the end customer’s requirements. Its purpose […]

Choosing the appropriate board is crucial in the PCB manufacturing process. Here are some common PCB boards and their characteristics introduced： 1. **FR-4**: This is the most common type of PCB material, composed of woven glass fibers soaked in epoxy resin. It offers excellent electrical insulation and mechanical strength, making it suitable for a wide range of applications. FR-4 is known for its versatility and reliability, and it is cost-effective. 2. **Polyimide (PI)**: Used for flexible PCBs, polyimide provides exceptional performance in harsh environments and high-temperature conditions. It is dimensionally stable during thermal cycling, making it ideal for multi-layer PCB constructions. 3. **Teflon**: Known for its excellent dielectric properties and minimal […]

In designing a high-speed analog signal chain, there are many options to consider for printed circuit board (PCB) layout, some more important than others and some dependent on the application. The final answer varies, but in all cases, design engineers should try to eliminate deviations from best practices without obsessing over every detail of layout and routing.   Exposed pad Exposed pad (EPAD) is sometimes overlooked, but it is very important to get the most out of the signal chain and to adequately dissipate heat from the device. The exposed pad, which Analog Devices calls pin 0, is the pad underneath most devices today. It is an important connection through […]

PCB X ray inspection means using an x ray machine to examine printed circuit boards. X rays are extremely high-frequency and high-energy electromagnetic waves of very short lengths, shorter than those of visible light. These waves can penetrate solid objects. In the world of electronics, manufacturers use the penetrability of x rays to view hidden features of printed circuit boards. For example, with X ray inspection, PCB components such as BGA and high-density IC connections can be checked for misalignment and other problems. More importantly, x ray inspection allows quality control technicians to view solder joints and inspect them for flaws. This helps catch defects that would otherwise go unnoticed due to […]

   For the electronics manufacturing industry, PCBA (Printed Circuit Board Assembly) is a necessary link, and its indispensable part is the functional test. Functional test is a very important step to ensure product quality, what is its role? Next, DYC will explore in depth what are the common PCBA functional tests.      PCBA functional test is carried out to ensure the electrical performance and functional stability of the product. In the production process, the use of reliable PCBA functional test can detect the defects and faults of the circuit board as early as possible, thus ultimately improving the quality and reliability of the product. At the same time, after […]

PCB color is the pigmented lacquer that manufacturers coat printed circuit boards with. This is usually the color of solder mask. But there’s also another layer called silkscreen. Since these layers are differently colored for trace and other visibility, well start by looking at the options for each. PCB Solder Mask Colors Solder mask is the thin layer that’s used to cover the copper traces. This layer shields the board from damage and short circuits. But while solder mask is traditionally green, it isn’t the only color that manufacturers can use. Other common PCB solder mask colors include yellow, black, white, yellow, red and purple. PCB Silkscreen Colors PCB silkscreen […]