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With the continuous development of science and technology, PCB board industry is also moving forward, technology upgrading has become a key element of the development of the industry...

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​Key Electrical and Physical Indicators in PCB Final Inspection Reports

​Key Electrical and Physical Indicators in PCB Final Inspection Reports

PCB Final Inspection Reports (commonly referred to as Shipping Reports, QA Reports, or COC/COA) are crucial evidence for measuring whether a PCB meets design requirements and reliability standards. A comprehensive inspection report typically lists key indicators across several dimensions: electrical

​Key Electrical and Physical Indicators in PCB Final Inspection ReportsJun 30, 2026 ​Key Electrical and Physical Indicators in PCB Final Inspection Reports107

Detail​Key Electrical and Physical Indicators in PCB Final Inspection Reports

​Metal Edge Framing (Metal Border) for PCBs: Electrical Shielding and Mechanical Reinforcement

​Metal Edge Framing (Metal Border) for PCBs: Electrical Shielding and Mechanical Reinforcement

The metal border (also commonly referred to as metal edge framing or metal rim) is a highly practical technique in PCB (Printed Circuit Board) design. Beyond enhancing the aesthetics of the board, its core value lies in the electrical shielding and mechanical reinforcement it provides.The following

​Metal Edge Framing (Metal Border) for PCBs: Electrical Shielding and Mechanical ReinforcementJun 29, 2026 ​Metal Edge Framing (Metal Border) for PCBs: Electrical Shielding and Mechanical Reinforcement72

Detail​Metal Edge Framing (Metal Border) for PCBs: Electrical Shielding and Mechanical Reinforcement

​How to Reduce Parasitic Capacitance Caused by Vias in High-Speed Signal PCB Design

​How to Reduce Parasitic Capacitance Caused by Vias in High-Speed Signal PCB Design

How to Reduce Parasitic Capacitance Caused by Vias in High-Speed Signal PCB DesignIn high-speed signal PCB design, a via is far more than just an electrical connection; it acts as a miniature parasitic LC circuit. The parasitic capacitance introduced by vias can cause signal rise time degradation an

​How to Reduce Parasitic Capacitance Caused by Vias in High-Speed Signal PCB DesignJun 27, 2026 ​How to Reduce Parasitic Capacitance Caused by Vias in High-Speed Signal PCB Design109

Detail​How to Reduce Parasitic Capacitance Caused by Vias in High-Speed Signal PCB Design

Summary of High-Frequency PCB Interference Generation Mechanisms and Underlying Breakdown of the Three Essential Elements

Summary of High-Frequency PCB Interference Generation Mechanisms and Underlying Breakdown of the Three Essential Elements

Many hardware engineers frequently encounter issues such as excessive Electromagnetic Interference (EMI) radiation and conducted emissions during product certification stages. Despite repeated board revisions and debugging sessions, they often fail to identify the root cause, commonly attributing th

Summary of High-Frequency PCB Interference Generation Mechanisms and Underlying Breakdown of the Three Essential ElementsJun 26, 2026 Summary of High-Frequency PCB Interference Generation Mechanisms and Underlying Breakdown of the Three Essential Elements513

DetailSummary of High-Frequency PCB Interference Generation Mechanisms and Underlying Breakdown of the Three Essential Elements

How does resin content variation cause inconsistent impedance in high-speed PCB mass production?

How does resin content variation cause inconsistent impedance in high-speed PCB mass production?

In the troubleshooting of mass impedance failures in multilayer high-speed PCBs, over 40% of root causes stem not from core laminate material issues, but from improper control of prepreg (PP) resin content and flow characteristics. Most engineers only verify nominal dielectric thickness during stack

How does resin content variation cause inconsistent impedance in high-speed PCB mass production?Jun 25, 2026 How does resin content variation cause inconsistent impedance in high-speed PCB mass production?248

DetailHow does resin content variation cause inconsistent impedance in high-speed PCB mass production?

Vehicle-Mounted PCB Anti-CAF (Conductive Anodic Filament) Process Control and Environmental Reliability Verification System

Vehicle-Mounted PCB Anti-CAF (Conductive Anodic Filament) Process Control and Environmental Reliability Verification System

CAF (Conductive Anodic Filament) represents one of the most insidious and hazardous long-term reliability failure modes for EV PCBs, frequently occurring in high-risk applications such as BMS voltage acquisition boards, high-voltage control boards, and domain controller multilayer boards. Under the

Vehicle-Mounted PCB Anti-CAF (Conductive Anodic Filament) Process Control and Environmental Reliability Verification SystemJun 24, 2026 Vehicle-Mounted PCB Anti-CAF (Conductive Anodic Filament) Process Control and Environmental Reliability Verification System234

DetailVehicle-Mounted PCB Anti-CAF (Conductive Anodic Filament) Process Control and Environmental Reliability Verification System
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    Products

    PCBA OEM and ODM
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    New energy PCBA
    Industrial control motherboard PCBA
    Consumer electronics PCBA
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    capabilities

    PCB design and layout
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    PCBA testing and aging

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    Shenzhen Chengchi Circuit Technology Co., Ltd.

    Email

    ccdltiktok@gmail.com

    Contact: +8618129931046 (Mr. Liao )

    Tel: 0755-23739764

    Tel: +8618168762195 (Miss Lin)

    Add: Lanhuahan Technology Industrial Park, Pingshan New District, Shenzhen

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