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FPC Adds Reliability Aug 21, 2017



With the increasing number of FPC and rigid flexible PCB application and promotion, it is more common to say that when the PCB with soft, rigid or rigid to say it is several layers of PCB. Usually, a PCB made of a flexible insulating substrate is called an FPC or a flexible PCB, and a rigid-flex PCB is referred to as a rigid-flex PCB. It is suitable for today's electronic products to high density and high reliability, miniaturization, FPC lightweight direction of the development needs, but also to meet the stringent economic requirements and market and technical competition needs.

Next, we will detail the 10 major advantages of FPC:

1. Flexible

A significant advantage of applying FPC is that it can be more easily trapped and attached in three-dimensional space, and can be curled or folded up. FPC As long as the curvature within the allowable radius of curvature, can withstand thousands to tens of thousands of times without damage.

2. Reduce the volume

In the assembly connection, with the use of cable ratio, FPC conductor cross-section thin and flat, reducing the wire size, and can be formed along the chassis, FPC the device structure is more compact, reasonable, reducing the installed volume. Compared with the rigid PCB, the space can save 60 ~ 90%.

3. Reduce weight

In the same volume, FPC and wire and cable ratio, in the same current capacity, FPC the weight can be reduced by about 70%, compared with the rigid PCB, the weight of about 90%.

4. Consistency of installation

FPC installed, eliminating the wiring cable with the wiring error. As long as the processing drawings after proofing through all the later produced by the winding circuit are the same. FPC When the cable is connected, no error occurs.

5. Increased reliability

When using FPC installed, because the X, Y, Z three planes on the wiring, reducing the transfer interconnection, so that the overall system reliability increases, and the fault of the inspection, provides a convenient.

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6. Electrical parameter design controllability

According to the use requirements, designers in the FPC design, can control the capacitance, inductance, characteristic impedance, delay and attenuation. Can be designed to have the characteristics of transmission lines. Because these parameters are related to the width of the wire, thickness, spacing, FPC thickness of the insulation, dielectric constant, loss tangent, etc., which is difficult to use when using a wire cable.

7. The end can be integrated soldering

FPC like a rigid PCB, with a terminal pad, can eliminate the wire stripping and tin, thus saving the cost. The terminal pads are connected to the element, device, plug, FPC and solder soldering or wave soldering can be used to replace the manual soldering of each wire.

8. Material use is optional

FPC can be used according to different requirements, the use of different base materials to manufacture. For example, polyester films may be used in connection applications requiring low cost. FPC In demanding applications, it is desirable to have excellent properties, and polyimide films can be used.

9. Low cost

With FPC installed, can make the total cost has been reduced. This is because:

1) due to the consistency of the various parameters of the FPC wire; the implementation of the overall termination, eliminating the cable conductor installed even when the error and rework, and FPC replacement more convenient.

2) FPC application to simplify the structural design, FPC it can be directly attached to the components, reducing the clip and its fixture.

3) For the need to shield the wire, with FPC lower prices.

10. Processing continuity

Since the flexible coated foil can be continuously fed into a roll, the continuous production of FPC can be achieved. This also helps to reduce costs.