A, the definition of a thick copper thick copper refers to the inner or outer arbitrary a complete copper layer thickness of 3 oz or printed circuit board
Second, the characteristics of the thick copper thick copper plate is large current, reduce the thermal strain, and heat dissipation good features.
Thick copper circuit board can carry large current online width of cases, increase the copper thickness is equivalent to increase the circuit area, able to carry more current, all its load-bearing characteristics of the large current.
The characteristics of thick sheet 2.
Thick copper circuit board to reduce the conductive coefficient of copper foil with smaller thermal strain (
Also known as the resistivity, 1.
Through the large current circumstance temperature rise is small, so can reduce the heat, reducing heat strain.
Conductive coefficient is the resistivity.
Metal 'conductor' according to the conductive coefficient, in turn, can be divided into: silver - copper - gold - aluminum - wolframe - nickel - iron.
Thick copper circuit board heat dissipation good copper foil with high thermal conductivity (
Coefficient of thermal conductivity of 401 w/mK)
, can play an important role in enhancing the cooling performance, so it has good heat resistance;
Coefficient of thermal conductivity is refers to under the condition of steady heat transfer, 1 m thick material, the surface temperature difference on both sides in 1 ° C, within 1 h, through 1 m2 area of heat transfer, the unit for W/m. K.
Thick copper plate heat dissipation good three, thick copper demand thick copper application field and the market has been rapidly expanding in recent years, has very good market prospects for development has become a 'hot' varieties of PCB.
The vast majority of thick copper plate will be large current base board (
Current voltage x = power)
Large current substrate main application fields are two major areas: power supply module (
And car electronic components.
Its main terminal electronic products field, some conventional PCB (same
Such as carrying type electronic products, network products, base station equipment, etc. )
, and there are different from the conventional PCB areas, such as automotive, industrial control, power supply module, etc.
Large current PCB substrate with conventional differences in efficiency.
Main function is used for conventional PCB constitutes a wire transfer information.
And there are large current through the large current substrate, carrying the base board of power device, main function is to protect the current carrying capacity and the power stability.
The large current development trend of the substrate is carrying a larger current, larger devices from the need to emit heat, so by the large current is more and more big, the base board all the copper foil thickness thicker.
Now manufacturing large current substrate 6 oz copper thick became routine;
Thick thick copper copper circuit board PCB applications: cell phones, microwaves, aerospace, satellite communications, network station, hybrid integrated circuits, power supply unit for base load power circuit and other high-tech fields.
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