1. Introduction to Dry Film Damage and Penetration 1.1 What is Dry Film Damage and Penetration? Dry Film Damage and Penetration refers to defects occurring in the photoresist layer applied to printed circuit boards (PCBs) during the manufacturing process. In PCB fabrication, dry film photoresists are essential for defining precise circuit patterns. They act as a protective layer during etching, pl...

The Engine of Mass Production: Understanding the Structure and Principle of Wave Soldering in PCB Assembly 1. Introduction to the Structure and Principle of Wave Soldering in PCB Assembly Wave soldering has long been regarded as one of the cornerstones of modern electronics manufacturing. As printed circuit boards (PCBs) became denser, more complex, and more critical to the performance of every de...

Introduction to Vibration and Impact Testing Introduction The modern automotive and aerospace industries rely heavily on electronics to provide safety, communication, navigation, and operational functionality. Printed Circuit Boards (PCBs) serve as the structural and electrical backbone of these critical systems. However, the environments in which they operate—high vibration during takeoff or turb...

Introduction to How to Select High-Frequency and High-Speed Materials 1. Introduction: The Growing Demand for High-Frequency and High-Speed Materials In the modern electronics industry, performance and reliability are inseparable from the choice of materials. As electronic devices evolve toward 5G connectivity, high-speed data transmission, and miniaturized architectures, the demand for high-frequ...