PCB assembly, do not apply any solder on the top or bottom pad. Use screws with built-in washers to achieve tight contact between the PCB and the metal case/shield or ground surface bracket.
the idea that thin films can be used to give mechanical strength or adequate insulation to individual parts inserted into printed circuit boards is wrong. The components must be mechanically inserted and must have their own suitable caulking agent, so tha
the oscillating circuit components as close as possible to the IC, the oscillating circuit as far as possible away from the antenna and other vulnerable areas. Put a ground pad under the crystal oscillator.
Differential PCB lines are usually always routed in pairs, and the distance between them along the direction of the pair remains a constant at any position. In general, the layout of the differential pair is always as close as possible.
As the product structure of PCB circuit boards is gradually developing to multi-layer and high-precision, PCB board companies should also adapt to The Times, vigorously carry out research in multi-layer board and high-precision board board, in order to ad
It has not been reported by PCB manufacturers at all, and only three assemblers mistakenly attributed the "tin reduction" problem (meaning that the solder only filled to half the hole depth after wave soldering) to the thick plate with a large i...
In addition, the deviation may also be the result of the different speeds of the two differential signal paths. In both cases, the factor affecting the offset is the glass fiber fabric in the PCB lamination.
Perhaps the most important factor is the growth of contract manufacturers and mass customization. In the printed circuit board manufacturing industry, this becomes a "highly mixed" production, where the reduction in batch volume leads to more pr...
The automatically designed circuit board is not as beautiful as the manual design, but it can meet the specified requirements in terms of electronic characteristics, and the complete performance of the design is guaranteed.
Now PCB design time is getting shorter and shorter, smaller and smaller board space, higher and higher device density, extremely demanding layout rules and large-size components make the designer's job more difficult.
At the same time, PCB processing can introduce IPD technology, through the integrated advantages of IPD technology, can bridge the widening gap between packaging technology and PCB technology.
There is also a hybrid structure of flexible PCB circuit, which is also a multi-layer board, but the conductive layer of the multi-layer board is composed of different metals. Located in Carlsba, California
