Quality Killers in PCB Manufacturing – Photoresist Semi-Polymer In the PCB manufacturing process, many tasks require the use of “photoresist materials,” including inner layer wet film, inner layer dry film, outer layer dry film, and green solder mask. It is a chemical material that, after exposure to light, produces different solubility in the developing solution … Read more
Click on the title “RF Flower Pool” to quickly follow! Let me introduce the following 5 aspects: 1. Introduction to Circuit Boards 2. Introduction to Circuit Board Materials 3. Basic Structure of Circuit Boards 4. Circuit Board Manufacturing Process 5. Circuit Board Case Sharing 1Introduction to Circuit Boards 1. Flexible Printed Circuit Board The flexible … Read more
Reminder: This long article contains valuable information. If you don’t read it all, you’ll miss out! When we place orders at PCB factories, we often have a type of FR-4 material to choose from, such as the one frequently used by Jialichuang, which currently offers three types of materials: FR-4, aluminum substrate, and thermally separated … Read more
What does it mean? Is Old Wu trying to incite everyone to take a detour? Is working impossible? Actually, what Old Wu means by copper thieving refers to Copper Thieving. Copper Thieving literally means copper that has thieving behavior, commonly known in the industry as balance copper, also referred to as plating copper, which refers … Read more
Today, I watched a video that was an official promotional video from an Indian PCB factory posted on YouTube. I don’t know why YouTube recommended this video to me, but it captivated me instantly. Just to clarify, this isn’t about being captivated by a girl. After watching the video, I slapped my thigh several times … Read more
1. The process edge serving as the transmission edge of the PCB should leave a width of ≥6mm, and there should be no components or solder points within 10mm from the edge on both sides; Wiring depends on the installation method of the PCB. Generally, PCBs installed in a guide groove should not have wiring … Read more
Author: Da Xu Zi Source: Xueqiu 01 PCB Industry Scale、Development Trends and Introduction to Downstream Applications 1、Industry Scale PCB refers to printed circuit boards formed by connecting points on a general substrate according to a predetermined design，its main function is to connect various electronic components into a predetermined circuit，acting as a relay transmission。 The global … Read more
If you don’t want to miss my updates, remember to click the top right corner – view public account – set as a star, and give me a star. Simple PCBs often only need to add a few elements to transform them from mere PCBs into something more. They can become “Kung Fu kids” or … Read more
a) Small power supplies should prioritize copper pouring on signal layers, followed by connections through traces that meet current-carrying requirements; Small power supplies (those with relatively low current in PCB design) typically need to consider signal integrity and power distribution issues. During layout, priority should be given to copper pouring on signal layers (usually inner … Read more
Design of Mark Points in PCB Production 1. A mark point corresponding to the whole board must be located on the diagonal of the PCB’s long edge. For chips with an integrated circuit pin center distance of less than 0.65mm, there must be a corresponding mark point on the diagonal of the integrated circuit’s long … Read more