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PCB circuit board layer full resolution
ByGrace November 26, 2024November 25, 2024
PCB design If you need to connect multiple boards to a larger system and provide interconnections between them, you may use a backplane to arrange and cascade these boards. The backplane is an advanced board, which borrows some elements from high-speed design, mechanical design, high-voltage/high-current design and even RF design. These boards are commonly used…
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Hot air leveling process exposed copper analysis
ByGrace November 25, 2024November 22, 2024
Hot air leveling involves immersing the printed circuit board in molten solder (63SN/37PB) and then blowing hot air over the surface of the printed circuit board and the excess solder in the metalized hole to obtain a smooth, uniform, and bright solder coating. Cladding. After the hot air leveling, the surface of the tin-alloy coating…
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Gold Plating Board Gold Plating Quality Problems and Measures
ByGrace November 25, 2024November 22, 2024
1. Reasons for the quality problems of gold plating 1.1 gold layer color is not normal The gold color of the connector is inconsistent with the color of the normal gold layer, or the color of the gold layer of different parts in the same accessory product is different. The reasons for this problem are:…
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PCB circuit anti-jamming measures
ByGrace November 25, 2024November 22, 2024
In the design of electronic systems, in order to avoid detours and save time, the requirements of anti-interference should be fully considered and satisfied, and remedial measures against interference should be avoided after the design is completed. There are three basic elements of interference: (1) Interference source refers to the component, device or signal that…
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Classification of electroplating process Process flow and description
ByGrace November 25, 2024November 22, 2024
1, Autoclave pressure cooker It is a kind of container filled with high-temperature saturated water vapor, which can apply high pressure. It can place laminated Laminates samples for a period of time to force water vapor into the plate and then remove the plate sample. Placed on a high-temperature molten tin surface, its “delamination-resistant” properties…
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Gold finger gold plating quality problems and measures
ByGrace November 25, 2024November 22, 2024
1 Introduction In connector plating, due to the high electrical performance requirements of the contact pairs, the gold plating process occupies a significant position in the connector plating. At present, except for some of the ribbon connectors using selective gold plating process, the rest of the needles The gold plating in the hole of the…
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Key Process Improvements for High-precision Printed Wiring Boards
ByGrace November 25, 2024November 22, 2024
Six ways to reduce automotive PCB defect rate The automotive electronics market is the third largest application area for PCBs after computers and communications. With the traditional mechanical products of automobiles, they gradually evolved and developed into high-tech products that integrate intelligence, information, and mechatronics. Electronic technology has been widely used in automobiles, both as…
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PCB electrical measurement technology analysis
ByGrace November 25, 2024November 22, 2024
Hot Air Solder Leveling, also known as spray tinning, works by using hot air to remove excess solder from the surface of the printed board and holes. The remaining solder evenly covers the pads and the non-resistive solder lines and surface package points. Hot air leveling process is relatively simple, mainly: put plate (sticky gold…
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Drilling and Etching For Rigid-Flex PCB
ByGrace November 25, 2024November 22, 2024
Drilling and etchback are an important procedure before electroless copper plating or direct copper plating on a rigid-flexible printed circuit board after CNC drilling. In order to rigidly print a printed circuit board to achieve reliable electrical interconnection, it must be combined with The special printed circuit boards special material composition is suitable for the…
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PCBA assembly soldering process for FPC, unlike hard circuit boards
ByGrace November 25, 2024November 22, 2024
FPC is also called flexible circuit board. The PCBA assembly and welding process of FPC is very different from the assembly of rigid circuit boards. Because the hardness of FPC board is not enough and it is soft, if you do not use a dedicated carrier board, you cannot complete the fixing and transmission. It…
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Variations in substrate size during PCB manufacturing
ByGrace November 25, 2024November 22, 2024
The reason:(1) The dimensional change of the substrate caused by the difference in the longitude and latitude direction; due to shearing, the fiber orientation is not paid attention to, and the shear stress remains in the substrate. Once released, the size of the substrate is directly affected. (2) The copper foil portion of the substrate…
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7 steps to teach you how to design a perfect PCB
ByGrace November 25, 2024November 25, 2024
PCB has developed from single-layer to double-sided, multi-layer and flexible, and still maintains its own development trend. Due to the continuous development towards high precision, high density and high reliability, the continuous reduction of size, reduction of cost and improvement of performance, the printed circuit board still maintains a strong vitality in the development of…
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PCB Basics – Types of PCBs
ByGrace November 25, 2024November 22, 2024
First, single-sided (Single-Sided Boards) As we just mentioned, on the most basic PCB, parts are concentrated on one side, and wires are on the other side. Because the wires only appear on one side, we call this type of PCB a single-sided board. Because a single panel has many strict restrictions on the design circuit…
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How to improve the wiring efficiency in PCB design
ByGrace November 23, 2024November 21, 2024
The wiring is an extremely important part of the PCB design and it will directly affect the performance of the PCB board. In the PCB design process, layout engineers all have their own understanding of the layout, but all layout engineers are consistent in how to improve the efficiency of wiring, so that not only…
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Why should the PCB board “paste gold”
ByGrace November 23, 2024November 21, 2024
1.PCB board surface treatment Anti-oxidation, spray tin, lead-free spray tin, immersion gold, Shen tin, Shen silver, hard gold plating, the whole board gold-plated, Goldfinger, nickel palladium Gold OSP: the cost of the end, good solderability, storage conditions harsh, time Short, environmentally friendly technology, welding is good, smooth. Spray tin: spray tin plate is generally multi-layer…
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