Category Archives: Uncategorized

Generally, the heat dissipation design of aluminum substrate LED is based on fluid dynamics software simulation and basic design. Resistance of fluid flow: due to the viscosity of fluid and the influence of solid boundary, the fluid is subjected to resistance in the flow process. This resistance is called flow resistance, which can be divided […]

When most hardware engineers contact PCB layout tools, PADS, Allgero, Protel and other tools from the beginning, they will inevitably contact the packaging and manufacturing of components. Whether it’s SMD components, QFP, QFN, BGA, PGA, SOT23, TO263, MOIC and other chips, or passive components such as 0402, 0603, 0805, etc., all have to touch the […]

With the popularization of SMT technology, SMT chip processing factory has strict requirements on packaging methods, coplanarity of pins and solderability of components, which leads to differences between reliability, manufacturability and reliability inspection of components in SMT production assembly line, and it is SMT chip with the formulation and implementation of production planning. Problems that […]

In the manufacturing stage of SMT SMD factory, the processing technology of lead-free reflow oven has always been a very obvious problem in PCBA production and processing. In the process of SMT chip production, high-quality lead-free solder joints can be produced, which has irreplaceable active effect in the whole process of electronic processing. However, in […]

Many people identify the quality of PCB according to the color of PCB. In fact, the color of motherboard has little to do with the performance of PCB. PCB, it’s not that the taller you look, the better you use it. The color of PCB surface layer is actually the color of solder resist. The […]

PCBA solderless press-in connection technology, also known as press-in technology, consists of malleable deformable or rigid terminals embedded in two or more sides. A kind of “moderate press-in” connection produced by the matching of metallized holes of pcb boards, which produces close point contact between the terminal and the metallized holes, and realizes electrical connection […]

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. […]

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 […]