2025-11-14 148

The Diagnostic Key to Reliability: How PCB Failure Analysis Prevents Future Defects

The Diagnostic Key to Reliability: How PCB Failure Analysis Prevents Future Defects Understanding the Foundation: The Definition of PCB Failure Analysis 1.1 The Fundamental Nature of PCB Failure Analysis in Modern Electronics    To appreciate the significance of failure diagnosis in PCBs, we must begin with a clear understanding of what PCB failure analysis actually represents within the broader e...

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2025-11-13 148

The Perfect Partnership: Understanding the Complementary Roles of In-Circuit and Functional Test

The Perfect Partnership: Understanding the Complementary Roles of In-Circuit and Functional Test Defining Functional Test: A System-Level Evaluation Beyond the Circuit    A Functional Test (often abbreviated as FCT) is a process designed to evaluate whether a PCB assembly or electronic system operates as intended under conditions that simulate real-world use. Unlike In-Circuit Test, which checks f...

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2025-11-12 158

Safeguarding Your Yield: How In-Circuit Test Ensures Quality in Electronics Production

Safeguarding Your Yield: How In-Circuit Test Ensures Quality in Electronics Production Understanding In-Circuit Test: Definition, Purpose, and Fundamental Concepts    At its core, In-Circuit Test (ICT) is a technique used to verify the electrical performance and interconnection integrity of individual components on a printed circuit board. It ensures that resistors, capacitors, diodes, transistors...

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2025-11-10 159

The Lifeline of Your PCB: Mastering the Relationship Between Trace Width and Current-Carrying Capacity

The Lifeline of Your PCB: Mastering the Relationship Between Trace Width and Current-Carrying Capacity 1. Understanding the Relationship Between Trace Width and Current-Carrying Capacity 1.1 Definition of the Relationship Between Trace Width and Current-Carrying Capacity    The term the Relationship Between Trace Width and Current-Carrying Capacity refers to how the physical width of a copper trac...

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2025-11-07 183

Via Plugging with Solder Mask: A Key Process in Modern PCB Manufacturing

Via Plugging with Solder Mask: A Key Process in Modern PCB Manufacturing 1. Understanding Via Plugging with Solder Mask 1.1 Definition of Via Plugging with Solder Mask (Via Plugging with Solder Mask)    Via Plugging with Solder Mask refers to a PCB manufacturing technique in which vias are filled (plugged) and then sealed with a solder mask layer. The process ensures that the via opening is covere...

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2025-11-06 171

The Definitive Guide to Via Filling: Mastering Materials and Processes in PCB Manufacturing

The Definitive Guide to Via Filling: Mastering Materials and Processes in PCB Manufacturing Understanding the Fundamentals of Via Filling  Via Filling Definition and Purpose    In its most essential form, Via Filling refers to the process of introducing a solid material—conductive or non-conductive—into the barrel of a drilled via in a printed circuit board. Traditionally, vias are plated with cop...

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2025-11-05 236

Why PCB HTG Material Isn’t Always Better, Beyond 180°C, Guide to PCB Tg

Why PCB HTG Material Isn't Always Better, Beyond 180°C, Guide to PCB Tg When pursuing high-performance and reliability in PCBs, high-Tg materials (Glass Transition Temperature) are often the go-to choice. But is you understanding still stuck in the "higher Tg is always better" mindset? While materials like ISOLA P96 with Tg 260°C and VT90 with Tg >250°C exist, as a former lamination and materia...

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2025-11-05 147

Preventing Solder Shorts: The Critical Role of Plugged Vias in PCB Manufacturing

Preventing Solder Shorts: The Critical Role of Plugged Vias in PCB Manufacturing 1. Understanding the Concept of Plugged Vias in PCB Manufacturing 1.1 What Are Vias and Why They Matter    Vias are small drilled holes that allow electrical signals or power to pass between different layers of a PCB. They are fundamental to multilayer circuitry, enabling interconnections that form the backbone of eve...

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2025-11-04 158

Why Should You Use a Blue Circuit Board? To Project a Professional and High-Quality Image

Why Should You Use a Blue Circuit Board? To Project a Professional and High-Quality Image 1. Understanding the Blue Circuit Board 1.1 Definition of Blue Circuit Board A Blue Circuit Board refers to a printed circuit board coated with a blue-colored solder mask layer—the protective film that covers the copper traces and insulating material beneath. The solder mask’s primary purpose is to prevent ox...

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2025-10-31 163

Electroplated Gold and ENIG: Strategic Choice

In-Depth Analysis of PCB Surface Finishes: Strategic Choice Between Electroplated Gold and ENIG Instruction Electroplated Gold: The Preferred Choice for Durability ENIG: The Choice for Precision Comprehensive Comparison: Performance and Application Scenarios SQPCB's Precision Manufacturing Advantages V. Frequently Asked Questions Make an Informed Choice Instruction In high-end PCB manufacturing, t...

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2025-10-31 167

Precision PCB Manufacturing: Preventing Ion Migration with Advanced Technology

Precision PCB Manufacturing: Preventing Ion Migration with Advanced Technology In the world of PCB manufacturing, some design rules are born from hard-earned experience rather than just theoretical calculations. One such critical rule is maintaining a minimum 0.4mm hole-to-hole spacing - a specification that separates temporary prototypes from reliable production-ready boards. Ion Migration: The H...

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2025-10-31 179

The ENIG Fabrication Protocol: Essential Notes for Consistent PCB Board Quality

The ENIG Fabrication Protocol: Essential Notes for Consistent PCB Board Quality Understanding The ENIG Fabrication Protocol     The ENIG fabrication protocol—short for Electroless Nickel Immersion Gold—is a duplex metallic coating applied to the copper pads of printed circuit boards to provide solderability protection and oxidation resistance. It involves two sequential chemical reactions: Electro...

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