What is controlling impedance?Controlling impedance is the characteristic impedance of the transmission line formed by the PCB wiring and its related reference planes. It is related when high -frequency signals spread on the PCB transmission line. Control
Five major factors affecting impedanceThe first: medium thickness. Increasing the thickness of the medium can increase the impedance, reduce the thickness of the medium, can reduce the impedance; different semi -solidary tablets have different glue conten
HDI circuit advantageIt can reduce the cost of PCB: When the density of PCB increases more than eight -layer board, it is made by HDI, and its cost will be lower than the traditional complex compact process.Increase the density of the line: the connection
The definition of the impedance board is: a good layer structure can control the characteristics of the characteristic impedance of the printed circuit board, and its wiring can form an easy -to -control and predictable transmission line structure called
The halogen -free PCB has the following characteristics: 1. TG high and conventional PCB board. 2. There is a lower water absorption and high stability. 3. More adapted to environmental protection requirements. 4. Suitable for the production of impedance
MCPCB aluminum substrate structureThe MCPCB aluminum substrate structure consists of circuit layer (copper foil layer), thermal conductivity insulation layer, and metal grassroots. The circuit layer requires a large load capacity, so that thicker copper f
As a substrate material in the manufacturing of the printing line board, the MCPCB copper plate is mainly on the role of interconnection, insulation, and support for the printing line board. influences.The performance, quality, manufacturing, manufacturin
Detailed processing of PCB Gold Finger:1) For PCB boards that need to be plugged in frequently, golden fingers generally need to be plated hard to increase the abrasion resistance of the golden finger.2) Golden fingers need to fall backwards, generally 45
Golden finger function: ① If Shen Jin+Gold -plating finger process is made, the welding of double -sided PCB boards will be very good, the performance of the PCB board will be stable, the pads will be stronger There will be poor contact and short circuit.
Golden fingers are connected parts between the memory slot and the memory slot, and all the signals are transmitted through the golden finger. Golden fingers are composed of many golden -yellow conductive tactics. Because of its gold -plated and conductiv
Golden fingers are connected parts between the memory slot and the memory slot, and all the signals are transmitted through the golden finger. Golden fingers are composed of many golden -yellow conductive tactics. Because of its gold -plated and conductiv
The principle of high -frequency oscillator detecting metalAdjusting the gain potentiometer of the high -frequency oscillator just makes the oscillator be in a critical oscillating state, which means that the oscillator just vibrates. When the detection c
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