China Wholesale Turnkey Pcb Quotes - 2 Layer F4B OSP PCB – Huihe
China Wholesale Turnkey Pcb Quotes - 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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We now have a specialist, efficiency workforce to deliver excellent service for our purchaser. We always follow the tenet of customer-oriented, details-focused for China Wholesale Turnkey Pcb Quotes - 2 Layer F4B OSP PCB – Huihe , The product will supply to all over the world, such as: Angola, Yemen, San Diego, Faced with the vitality of the global wave of economic integration, we are confident with our high-quality products and sincerely service to all our customers and wish we can cooperate with you to create a brilliant future.
By Eleanore from Sydney - 2017.08.16 13:39
Wide range, good quality, reasonable prices and good service, advanced equipment, excellent talents and continuously strengthened technology forces，a nice business partner.
By Liz from Plymouth - 2018.09.16 11:31
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