According to semiconductor industry forecasts, by 2025, the scale of China’s chip industry is expected to exceed 1.2 trillion yuan, with a localization rate expected to reach 40%. Driven by the dual engines of the digital economy and new infrastructure, chips, as the “grain” of modern industry, are ushering in historic development opportunities. It is … Read more
In everyday life, we find that many PCBs in electronic products or devices are green. Do you know why? I believe there are several main reasons: 1. History and Tradition (The Core Reason) Military Origins: In the early stages of PCB development (mid-20th century), the U.S. military was the largest user and standard setter for … Read more
Drilling plays a crucial role in PCB design, facilitating electrical connections and component installation. Based on conductivity properties, holes can be classified into metallized and non-metallized holes, with metallized holes further divided into vias and component holes. These are the core structures for connecting interlayer circuits and supporting inserted components. During the prototyping phase, any … Read more
1. PCBA Production Process OverviewPCBA (Printed Circuit Board Assembly) production process encompasses multiple stages from design to finished product assembly, with the core steps as follows:1. Design and Material Preparation o Circuit Design: Use software such as Altium Designer and Cadence to complete schematic design, determine component parameters, layout, and signal integrity requirements. o PCB … Read more
Click the blue text to follow us In PCBA processing, there is a term that is repeatedly mentioned, which is the BOM (Bill of Materials). Some customers may think that the BOM is just a list of components, and sending an EXCEL spreadsheet is sufficient. Why is it referred to as a “lifeline”? Let’s break … Read more
PCB (Printed Circuit Board), also known as printed circuit board in Chinese, is an important electronic component and the support for electronic components. Since it is made using electronic printing technology, it is called a “printed” circuit board. Before the advent of PCBs, circuits were composed of point-to-point wiring. This method had low reliability because … Read more
With the rapid development of the PCB industry, PCBs are gradually moving towards high-precision fine lines, small apertures, and high aspect ratios (6:1-10:1). The copper requirement for holes is 20-25μm, and for boards with DF line spacing ≤4 mil, most PCB manufacturers face plating film issues. Film entrapment can cause direct short circuits, affecting the … Read more
With the rapid development of the PCB industry, PCBs are gradually moving towards high-precision fine lines, small apertures, and high aspect ratios (6:1-10:1). The copper requirement for holes is 20-25μm, and for boards with a D/F line spacing of ≤4 mil, most PCB manufacturers face plating adhesion issues. Adhesion can cause direct short circuits, affecting … Read more
1. Introduction to FPC FPC stands for Flexible Printed Circuit, which translates to 柔性印制线路板 in Chinese, commonly referred to as soft boards. It is made by transferring and etching conductor circuit patterns onto a flexible substrate using photolithography techniques. The outer and inner layers of double-sided and multilayer circuit boards are electrically connected through metallized … Read more
Back drilling is a special controlled-depth drilling process used in the production of multilayer boards to connect different layers, primarily applied in fields such as communication equipment, large servers, medical electronics, military, and aerospace. ★ Special Considerations for Back Drilling Design ✒︎ Determine the layers that require back drilling Identify the specific layers that need … Read more