The blowhole caused by PCBA plate welding, which is commonly referred to as bubble, is generally caused by reflow welding and wave welding during PCBA processing. So how to prevent blowhole caused by PCBA production and processing welding? 1. baking Bake PCB and electronic devices exposed to air for a long time to avoid moisture. […]
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In the traditional assembly process of electronic devices, the wave soldering technology is generally used for the welding of PCB components with PTH. There are many shortcomings in wave soldering: 1. High-density, fine-spaced chip-mounted components cannot be spread all over the welding surface; 2. More bridging and false welding; 3, need to spray welding flux; […]
Pay attention to the welding temperature After all, the material of aluminum substrate is different. In the case of welding, there is no doubt that we should do a good job in controlling the temperature level, so as to ensure the good welding effect and reasonably prevent certain problems.To ensure that the temperature can achieve […]
Flexible printed circuit board. The number of circuits in one FPC can exceed 100, but it only occupies the thickness of 0.2mm Although it is more expensive than flat cable, it is widely used in smart products with compact volume. Especially mobile phones, smart bracelets and other scenes. Today, the most important thing for everyone […]
“High-speed backplane and high-speed backplane connector” is mentioned in “The culprits in several high-speed PCB designs”. So how is the high-speed backplane designed? What are the design steps from beginning to end? What are the key points in each stage? The case analysis of the current period is summarized. High-speed backplane design process The detailed […]
1. Multi-layer circuit board Jafani bites copper This problem must be traced back to the copper electroplating process. It is found that if the examples of deep hole barrel plating and buried hole barrel plating with high thickness-diameter ratio can be shown that the copper thickness is more evenly distributed, this kind of Jafani’s copper […]
Definition of making high frequency circuit board High-frequency circuit board refers to a special circuit board with high electromagnetic frequency, which is used for PCB in high-frequency (frequency greater than 300MHZ or wavelength less than 1m) and microwave (frequency greater than 3GHZ or wavelength less than 0.1m) fields. It is a circuit board produced by […]
Nowadays, with people’s living standard getting higher and higher, there are more and more home appliances. Television is a very common electrical appliance in people’s daily life, and it is also an electrical appliance that almost every household has, with a very high popularization rate. So do you know what the logic board in TV […]
Nowadays, more and more circuit boards use surface mount components. Compared with traditional packaging, it can reduce the total area of circuit boards, facilitate mass production and processing, and have high wiring density. The lead inductance of chip resistor and capacitor is greatly reduced, which has great advantages in high frequency circuit. The inconvenience of […]
IGBT master control board is a kind of master control board with a power range of 15KW-120KW, which consists of a panel, a master control board and two driving boards. It is mainly used in the heat treatment industry. Introduction of IGBT main control board: The main control board of high-frequency induction heating and two […]










