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Viscosity and surface tension are important properties of solder. Excellent solder should have low viscosity and surface tension when melted. Surface tension is the nature of matter, which cannot be eliminated, but can be changed. The main measures to reduce the surface tension and viscosity in PCBA welding are as follows. ① Increase the temperature. […]

The aluminum substrate is a low-alloy Al-Mg-Si high-plasticity alloy plate, which has good thermal conductivity, electrical insulation and machinability. Compared with the traditional FR-4, the aluminum substrate has the same thickness and the same line width, and can carry higher current. The aluminum substrate has a withstand voltage of 4,500 V and a thermal conductivity […]

Although I am not a professional PCB designer, I would like to share what made in additive process means to PCB designers, especially the relationship with solder resist. Here are some important factors that I think designers need to consider. 1. Definition of solder resist Essentially, any definition provided by EDA tools is incorrect; The […]

It has a thermal cladding, which can efficiently dissipate heat, cool components and improve the overall performance of the product. 1。 Environmental protection: Aluminum is non-toxic and recyclable. Because it is easy to assemble, the use of aluminum also helps to save energy. For printed circuit board suppliers, the use of this metal helps to […]

With the rapid development of electronic information technology, the manufacturing requirements of various circuit boards have increased greatly. As the key raw material of anodizing in electroplating process, the demand of copper is greatly increased, and the high-precision PCB must be anodized with phosphor copper balls. Phosphor copper balls are mainly used in electronic devices […]

What problems should be paid attention to in the pcb Layout of mobile phones, and do the display parts need to be wired? 1: device device Layer2： signal Most of the address and data signal, and some analog lines (corresponding to the ground of layer 3). Layer3： GND part of the wiring (including the keyboard […]

Today, from the perspective of soldering, let’s talk about what points should be paid attention to when designing PCB. 1. Factors affecting PCB welding quality From PCB design to the completion of all components welding, to become a high-quality circuit board requires the control of PCB engineers, welding process, welding workers and many other links. […]

Include the development of PCBs that drive electronic devices and generally control mechanical and pneumatic operations. It brings special challenges to space PCB manufacturing, and these challenges must be overcome to ensure that aerospace systems can complete their tasks safely and reliably. For the manufacture of plates, these are mainly related to the maintenance of […]

Generally, the design current of PCB will not exceed 10A or even 5A. Especially in household and consumer electronics, the continuous working current on PCB usually does not exceed 2A. Recently, however, the company’s products should be designed with a power line, and the continuous current can reach about 80A. Considering the instantaneous current and […]

Etching process is one of the basic steps in PCB production. Simply speaking, it is the process that the base copper is covered by the resist layer, and the copper that is not protected by the resist layer reacts with the etchant, so that it is bitten off, and finally the design circuit pattern and […]