Ferric chloride (FeCl₃) plays a central role in the manufacturing of printed circuit boards (PCBs), primarily as an etchant used to selectively remove excess copper foil from copper-clad laminates, thereby forming the predefined circuit patterns. This etching process is an indispensable part of PCB manufacturing, and its success directly affects the electrical performance and reliability … Read more
Ferric chloride (FeCl₃) plays a crucial role in the manufacturing of printed circuit boards (PCBs), especially in the etching process, where it acts as a powerful etchant to selectively remove copper foil, thereby forming the desired circuit patterns. This application is not only one of the core steps in PCB production but is also widely … Read more
Table of Contents 1. Frequency Characteristics and Application Scenarios 1. Low Frequency Band (kHz): Fundamental Support for Large Area Processes 2. Mid-High Frequency Band (MHz): Main Frequencies for Etching and Deposition 3. High Frequency Band (60MHz and above): Core Frequencies for Advanced Processes 4. Impact of Wafer Size on Frequency Selection 5. Comparison of Common … Read more