China Wholesale High Speed Pcb Factories - 2 Layer F4B OSP PCB – Huihe
China Wholesale High Speed Pcb Factories - 2 Layer F4B OSP PCB – Huihe Detail:
Effect of different types of copper foil on electrical properties
In the design of high-frequency PCB, designers usually pay more attention to the dielectric constant (DK) and tangent loss (DF) of PCB when selecting materials, and only pay attention to the thickness of copper foil when selecting copper foil, which is easy to ignore the influence of different types of copper foil roughness on the electrical properties of products.
SEM analysis of the micro morphology of different types of copper foil and dielectric contact surface shows that the roughness of different types of copper foil is quite different. In the design of microstrip line, the roughness of copper foil and dielectric contact surface will directly affect the insertion loss of the whole transmission line.
Material parameters of F4B PCB
|
Material type |
Model |
Filling Material |
Dk（@10GHZ） |
Df（@10GHZ） |
|
F4B-1/2 |
PTFE+Glass cloth |
2.55/2.65 |
≤0.001 |
|
|
F4BK |
F4BK225 |
PTFE+Glass cloth |
2.55 |
≤0.001 |
|
F4BK265 |
PTFE+Glass cloth |
2.65 |
≤0.001 |
|
|
F4BK300 |
PTFE+Glass cloth |
3 |
≤0.001 |
|
|
F4BK350 |
PTFE+Glass cloth |
3.5 |
≤0.001 |
|
|
F4BM |
F4BM220 |
PTFE+Glass cloth |
2.2 |
≤0.007 |
|
F4BM225 |
PTFE+Glass cloth |
2.55 |
≤0.007 |
|
|
F4BM265 |
PTFE+Glass cloth |
2.65 |
≤0.007 |
|
|
F4BM300 |
PTFE+Glass cloth |
3 |
≤0.007 |
|
|
F4BM350 |
PTFE+Glass cloth |
3.5 |
≤0.007 |
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The company upholds the philosophy of "Be No.1 in quality, be rooted on credit and trustworthiness for growth", will continue to serve old and new customers from home and overseas whole-heatedly for China Wholesale High Speed Pcb Factories - 2 Layer F4B OSP PCB – Huihe , The product will supply to all over the world, such as: Suriname, Costa rica, Japan, Since our establishment, we keep on improving our products and customer service. We are able to provide you with a wide range of high quality hair products at competitive prices. Also we can produce different hair products according to your samples. We insist on high quality and reasonable price. Except this, we provide best OEM service. We warmly welcome OEM orders and customers all over the world to cooperate with us for mutual development in the future.
By Barbara from Moscow - 2018.06.03 10:17
The company has rich resources, advanced machinery, experienced workers and excellent services, hope you keep improving and perfecting your products and service, wish you better!
By Mario from Liberia - 2018.07.12 12:19
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