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Circuit board manufacturer: oxidation analysis and improvement method of immersion gold pcb board?

Circuit board manufacturer: oxidation analysis and improvement method of immersion gold pcb board? 1. Picture of Immersion Gold Board with Poor Oxidation: 2. Description of Immersion Gold Plate Oxidation: The oxidation of the gold-immersed circuit board of the circuit board manufacturer is that... Read More

9 common sense of PCB factory circuit board inspection

The 9 common sense of PCB factory circuit board inspection are introduced as follows: 1. It is strictly forbidden to use grounded test equipment to touch the live TV, audio, video and other equipment of the bottom plate to test the PCB board without an isolation transformer. It is strictly forbid... Read More

Grid copper pour, solid copper pour-which one should be picked for PCB​?

What is copper The so-called copper pour is to use the unused space on the circuit board as a reference surface and then fill it with solid copper. These copper areas are also called copper filling. The significance of copper coating is to reduce the impedance of the ground wire and improve the a... Read More

Basic rules of PCB layout

01 Basic rules of component layout 1. According to circuit modules, to make layout and related circuits that achieve the same function are called a module. The components in the circuit module should adopt the principle of nearby concentration, and the digital circuit and the analog circuit shoul... Read More

Detailed explanation of PCB copy board reverse push principle

Weiwenxin PCBworld] In the research of PCB reverse technology, reverse push principle refers to reverse push out according to the PCB document drawing or directly draw the PCB circuit diagram according to the actual product, which aims to explain the principle and working condition of the circuit... Read More

In PCB design, how to substituting IC smartly?

When there is a need to replace IC in PCB circuit design, let’s share some tips when replacing IC to help designers be more perfect in PCB circuit design.   1. Direct substitution Direct substitution refers to directly replacing the original IC with other ICs without any modification, and th... Read More

12 details of PCB layout, have you done it right?

1. The spacing between patches   The spacing between SMD components is a problem that engineers must pay attention to during layout. If the spacing is too small, it is very difficult to print solder paste and avoid soldering and tinning. The distance recommendations are as follows Device distance... Read More

What is circuit board film? Introduction to the washing process of circuit board film

Film is a very common auxiliary production material in the circuit board industry. It is mainly used for graphics transfer, solder mask and text. The quality of the film directly affects the quality of the product.   Film is film, it is the old translation of film, now generally refers to fi... Read More

Irregularly PCB design

[VW PCBworld] The complete PCB we envision is usually a regular rectangular shape. Although most designs are indeed rectangular, many designs require irregular-shaped circuit boards, and such shapes are often not easy to design. This article describes how to design irregular-shaped PCBs. Nowadays... Read More

The delivery of the carrier board is difficult, which will cause changes in the packaging form​? ​

01 The delivery time of the carrier board is difficult to solve, and the OSAT factory suggests to change the packaging form The IC packaging and testing industry is operating at full speed. The senior officials of the outsourcing packaging and testing (OSAT) said frankly that in 2021 it is estima... Read More

​Using these 4 methods, the PCB current exceeds 100A

The usual PCB design current does not exceed 10A, especially in household and consumer electronics, usually the continuous working current on the PCB does not exceed 2A. However, some products are designed for power wiring, and the continuous current can reach about 80A. Considering the instantan... Read More

Do you know what are the benefits of even-numbered PCB?​

[VW PCBworld] Designers may design odd-numbered printed circuit boards (PCBs). If the wiring does not require an additional layer, why use it? Wouldn’t reducing layers make the circuit board thinner? If there is one less circuit board, wouldn’t the cost be lower? However, in some case... Read More
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