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How Impedance Is Used in PCB Layout Importance of Impedance vs. Resistance in PCB Layout
ByGrace July 3, 2025July 3, 2025
When designing a circuit board layout, it can be easy to identify a routine where certain parameters are given more importance than others. This is even more common when the parameters are interdependent or vary with each other. For example, resistance is actually or can be used to represent all other electrical parameters in a…
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PCB Cleaning Recommendations
ByGrace July 3, 2025July 3, 2025
Types of Contaminants This lists several contaminants that can affect the performance and life of PCBs. According to the lists , the following contaminants must be removed from circuit boards using cleaning techniques that are safe for workers and sustainable for the environment. IPC Recommendations on Cleaning Residues Consider the following when cleaning PCBs. Debris…
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Effective Approaches to Mitigate PCB Temperature Rise
ByGrace July 3, 2025July 3, 2025
Abstract Printed Circuit Boards (PCBs) are fundamental components in modern electronic devices, and their thermal management is crucial for reliability and performance. Excessive temperature rise in PCBs can lead to component failure, reduced lifespan, and degraded functionality. This paper explores the primary causes of PCB overheating and presents effective strategies to mitigate temperature rise, including…
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Causes of Problems in PCB Pre-Treatment Processes
ByGrace July 3, 2025July 3, 2025
Abstract Printed Circuit Board (PCB) manufacturing involves multiple critical steps, with pre-treatment being one of the most essential stages. Pre-treatment processes, such as cleaning, surface preparation, and chemical treatments, significantly impact the quality, reliability, and performance of PCBs. However, improper pre-treatment can lead to various defects, including poor adhesion, surface contamination, and corrosion. This paper…
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Explore the impact of several factors on PCB heat dissipation
ByGrace July 3, 2025July 3, 2025
Temperature is one of the key factors that limit device power and performance. Any power chip application engineer must pay attention to the problem of thermal resistance when designing. When θJC is relatively low, the reduction of θJA is particularly important, and the thermal resistance θJA is highly dependent on the design of the PCB….
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Sharing of cleaning tips for PCB circuit boards
ByGrace July 3, 2025July 3, 2025
PCB circuit boards are widely used in China. During the production process of circuit boards, pollutants will be generated, including the residues of flux and adhesives, and other pollutants such as dust and debris in the production process. If the PCB board cannot effectively ensure the cleaning surface, the resistance and leakage will cause the…
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How to Properly Operate PCB Panelization: A Comprehensive Guide
ByGrace July 3, 2025July 3, 2025
Introduction Printed Circuit Board (PCB) panelization is a crucial step in the PCB manufacturing process that involves arranging multiple PCB designs onto a single panel for efficient production. Proper panelization ensures cost-effectiveness, improves assembly efficiency, and enhances the overall quality of the final product. However, incorrect panelization can lead to manufacturing defects, increased costs, and…
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How to control the precision of PCB board milling
ByGrace July 3, 2025July 3, 2025
The milling technology of CNC milling machines for circuit boards includes the selection of cutting direction, compensation method, positioning method, frame structure, and cutting point, which are all important aspects to ensure the precision of milling. The following are the precision control skills and methods of PCB board milling summarized by Jieduobang PCB. Cutting direction…
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The Impact of Common Pads on PCB Soldering Quality
ByGrace July 3, 2025July 3, 2025
Abstract This paper examines the effects of common (shared) pads on printed circuit board (PCB) soldering processes and final product quality. As electronic devices continue to shrink in size while increasing in complexity, the use of shared pads has become more prevalent in PCB design. While offering space-saving benefits, common pads introduce several challenges to…
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How to Repair PCB Vias: A Comprehensive Guide
ByGrace July 3, 2025July 3, 2025
Introduction to PCB Via Repair Printed Circuit Board (PCB) vias are essential conductive pathways that connect different layers of a multilayer PCB. These small holes plated with conductive material allow electrical signals and power to travel between layers, making them critical components in modern electronics. When vias become damaged or fail, it can lead to…
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PCB chip packaging and welding
ByGrace July 3, 2025July 3, 2025
Chip on board (COB), semiconductors place chips on printed circuit boards and achieve electrical connections between chips and substrates through wire stitching. The electrical connection between the chip and the substrate is achieved through wire stitching and covered with resin to ensure reliability. . Although COB is the simplest chip-on-chip technology, its packaging density is…
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Requirements for Non-Electrolytic Nickel Coatings on PCBs
ByGrace July 3, 2025July 3, 2025
Abstract This paper examines the critical requirements for non-electrolytic nickel coatings on printed circuit boards (PCBs) in modern electronics manufacturing. As PCBs continue to evolve with higher density interconnects and more demanding operating conditions, the specifications for nickel surface finishes have become increasingly stringent. The discussion covers thickness requirements, adhesion standards, solderability, corrosion resistance, electrical…
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Etching process of PCB outer layer circuit
ByGrace July 3, 2025July 3, 2025
I. Overview At present, the typical process of printed circuit board (PCB) processing adopts “graphic electroplating method”. That is, a lead-tin anti-corrosion layer is pre-plated on the copper foil part of the outer layer of the board to be retained, that is, the graphic part of the circuit, and then the rest of the copper…
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Commonly used failure analysis techniques for PCB
ByGrace July 3, 2025July 3, 2025
As the carrier of various components and the hub of circuit signal transmission, PCB has become the most important and critical part of electronic information products. Its quality and reliability level determine the quality and reliability of the whole equipment. However, due to cost and technical reasons, a large number of failure problems have occurred…
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Functional principle analysis of PCB detection circuit
ByGrace July 2, 2025July 1, 2025
1 Introduction When electronic engineers are doing reverse design or repair work on electronic equipment, they first need to understand the connection relationship between the components on the unknown printed circuit board (PCB), so they need to measure and record the connection relationship between the pins of each component on the PCB. The simplest method…
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