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PCB Manufacture Flex Circuit Board Polymine for Mobile Phone Camera
WHAT IS THE ADVANTAGE TO USING A FLEX PCB?
Flexible printed circuit boards come with numerous advantages over
a rigid PCB. This has made them common in consumer electronics, yet
comes with some drawbacks. As a result, rigid and flexible PCBs
both have their place, and are often used in conjunction with each
other in rigid-flex circuits.
YS Circuit
Flexible Circuit Boards, as the name suggests, are special types of
circuits that can bend and adjust to the shape of the device and
product in which they are installed.
They are made of a flexible substrate and have the capability to
adapt according to the shape.
Physically, you can consider flexible printed circuit (FPC) boards
just like a PCB with components, but the only difference is that
the substrate can be bent.
The same components can be mounted on an FPC, and the same
functionality can be obtained just like a normal rigid PCB.
There are special plastic substrates used to make a flexible
circuit board.
It could be Polyimide or polyester film. Sometimes, you will see a
polyester sheet and silver conductive lines on it;
We will introduce in detail later on Which material is used in
flexible PCB.
These circuits are used in special projects when you care more
about the compactness and minimalist design of the product.
It has greatly revolutionized the electronics industry and has
significantly reduced the size of products or devices.
Flexible PCB stack up
Layer | 1-8 |
Material | DuPont PI, Domestic Shengyi PI |
Thickness (Finished Board) | 0.05 mm-2.0 mm |
Max. Board Size | 406 mm*610 mm |
Copper weight (finished) | 457mm*610mm |
Surface Finish | Hot air solder leveling (HASL) Lead-free HASL: RoHS compliant Electroless nickel/immersion gold (ENIG): RoHS compliant Immersion Tin: RoHS compliant Organic solderability Preservatives (OSP): RoHS compliant |
Min. Tracing/Spacing | 3 mil/3 mil |
Min. hole size—Drilling (PTH) | 0.2mil |
Min. hole size—Punching (NPTH) | 0.5mil |
Tolerance of dimension | +/-0.05 mm |
Solder-stop coating—Soldermask oil | Green, red, black, yellow, white, blue |
Solder-stop coating—Coverlay | PI and PET film |
Silkscreen legend color | White, black, yellow |
Peelable solder mask | Yes |
Gold fingers | Yes |
Stiffener | Yes, material PI or FR4 |
layer/m² | S<1㎡ | S<3㎡ | S<6㎡ | S<10㎡ | S<13㎡ | S<16㎡ | S<20㎡ | S<30㎡ | S<40㎡ | S<50㎡ | S<65㎡ | S<85㎡ | S<100㎡ |
1L | 4wds | 6wds | 7wds | 7wds | 9wds | 9wds | 10wds | 10wds | 10wds | 12wds | 14wds | 15wds | 16wds |
2L | 4wds | 6wds | 9wds | 9wds | 11wds | 12wds | 13wds | 13wds | 15wds | 15wds | 15wds | 15wds | 18wds |
4L | 6wds | 8wds | 12wds | 12wds | 14wds | 14wds | 14wds | 14wds | 15wds | 20wds | 25wds | 25wds | 28wds |
6L | 7wds | 9wds | 13wds | 13wds | 17wds | 18wds | 20wds | 22wds | 24wds | 25wds | 26wds | 28wds | 30wds |
8L | 9wds | 12wds | 15wds | 18wds | 20wds | 20wds | 22wds | 24wds | 26wds | 27wds | 28wds | 30wds | 30wds |
10L | 10wds | 13wds | 17wds | 18wds | 20wds | 20wds | 22wds | 24wds | 26wds | 27wds | 28wds | 30wds | 30wds |
12L | 10wds | 15wds | 17wds | 18wds | 20wds | 20wds | 22wds | 24wds | 26wds | 27wds | 28wds | 30wds | 30wds |
14L | 10wds | 16wds | 17wds | 18wds | 20wds | 20wds | 22wds | 24wds | 26wds | 27wds | 28wds | 30wds | 30wds |
16L | 10wds | 16wds | 17wds | 18wds | 20wds | 20wds | 22wds | 24wds | 26wds | 27wds | 28wds | 30wds | 30wds |
FQA
1. Do you offer double-layer flexible PCB?
Yes, we make single layer flexible PCB, double sided flexible PCB,
multi-layer flexible PCB, and Rigid-Flex PCBs.
2. How many types of flexible circuit do you make?
We make different types of Flex and Rigid-Flex PCBs, depending on
the structure, base material, adhesive, appearance, insulation base
film, and metal conductor foil. Please consult our technical team
for details suitable for your application.
3. Do you provide stiffeners and cover films?
Yes, we provide black PI stiffeners, yellow PI cover films,
transparent polyimide films, white overlay, and brown PI copper
clad laminates.
4. Do you use adhesive free copper foil base material?
Yes. We have four manufacturing methods for adhesive-free copper
foil base materials. We use spray plating, curtain coating,
electroless deposition/electrolytic plating, and laminating.
5. What are the minimum and maximum thickness of your adhesive flex
PCBs?
Minimum thickness is 2 µm and the maximum is 200 µm.
We ensure high chemical durability and processing compatibility for
flexible printed circuits and do not sacrifice its original
electrical property, heat-resistant property, and mechanical
property.