At present, the global PCB enterprises are mainly distributed in China, Japan, South Korea and other places. The downstream application field of PCB industry is very wide, which is less affected by a single industry, so it is relatively dispersed, with ma
For PCBS that have been identified as keyboards in the device, these key characteristic parameters and indicators must be centralised and checked from the head in addition to regular inspection. To the toes.
where the capacitor in the circuit to AC current obstruction effect is called capacitive reactance, inductance in the circuit to AC current obstruction effect is called inductive reactance, capacitance and inductance in the circuit to AC current caused by
In the manufacture of high density packaging structure such as BGA for PCB raw materials technical requirements, special analysis should be carried out carefully, the selection of substrate and copper foil thermal expansion coefficient basically to match.
Most of the existing sites of manufacturers are small, and the investment amount is also relatively large, so that many small and medium-sized PCB enterprises to introduce robots to complete the automation hope and stop.
No matter how developed the market is, PCBS are the most frequently used demand in production and an integral part of the electronics industry.
The next stage is product implementation. At this stage, product documentation is collected and compiled, including all manuals, catalogs, and related product documentation.
PCB ink quality is excellent, in principle can not be separated from the combination of the above major components. Ink quality is excellent, is the formula of science, advanced and environmental protection of the comprehensive embodiment.
This paper introduces various techniques of the three types of interconnect design, including device installation methods, wiring isolation and measures to reduce lead inductance.
communication backplane, automotive board and other fields is relatively slow, while the HDI board, packaging board and soft board applied in high-end mobile phones, laptops and other "thin and short" electronic products will maintain rapid grow...
In this way, the printed circuit or printed circuit of the finished board called printed circuit board, also known as printed board or printed circuit board.
It is a short name for dynamicviscosity. The viscosity is generally expressed in terms of the shear stress of the fluid flow divided by the velocity gradient in the direction of the flow layer in international units of Pa/s (Pa). S) or millipa/second (mPa
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