Understand the difference between ffc wiring and fpc wiring

What is ffc wiring and what is  fpc wiring ?

 

Wiring, also known as flexible circuit board (FPC). It is used for the transmission of data within the active parts and areas, such as the hard disk connected to the mainboard of the computer, the data line of the optical drive, the data line of the mobile phone motherboard connected to the display screen, and so on. There are also connected devices between the data lines are collectively known as wiring. Wire layout is mainly divided into two kinds of round head (R-FFC for direct welding) and flat ends (for short FFC, for socket insertion). Most suitable for data transmission cables between moving parts and motherboards, between board and board, and for miniaturized electrical equipment. Because the price of FFC cable is better than that of FPC (flexible Printing Circuit), its application will become more and more extensive. In most places where FPC is used, you can basically replace it with FFC.

 

FPC

Wiring characteristics

 

  1. The wire layout is small, light weight, the original design of the wiring board is used to replace the larger wire harness wire. Wiring is usually the only solution to miniaturization and mobility on the current cut TIng-edge assembly board. Wire placement (sometimes referred to as flexible printed circuit) is the etching of copper circuit or printed polymer thick film circuit on the polymer substrate. For thin, light, compact and complex devices, the design solutions range from single-sided conductive circuits to complex multi-layer three-dimensional assembly. The total weight and volume of wire arrangement is 70% less than the traditional round wire harness method. Wire placement can also increase strength by using reinforced materials or linings to achieve additional mechanical stability.

 

  1. Wire placement can be moved, bent, twisted without damaging the wire, and can conform to different shapes and special package sizes. The only limitation is the volume space problem. Because it can withstand millions of times of dynamic bending, wiring can be well applied to continuous or periodic motion of the internal system, as part of the final product function. The solder joints on the rigid PCB are subjected to thermal mechanical stresses that fail after hundreds of cycles. "require electrical signals / power to move," said Jenny, a product manager at EECX. Some products with smaller shape coefficients / package sizes benefit from wire placement.

long FPC board

 

3, wiring has excellent electrical properties and dielectric properties," said the CEO of heat-resistant. LT Electronic. "low dielectric constants allow electrical signals to be transmitted quickly; Good thermal properties make the element easy to cool down; higher glass conversion temperature or melting point make the element work well at higher temperature.

 

4, wiring has higher assembly reliability and quality. Wiring reduces the hardware required for internal wiring, such as solder joints, trunk wires, backboard lines and cables commonly used in traditional electronic packaging, enabling wiring to provide higher assembly reliability and quality. Ping.Wu, a marketing manager with a higher misalignment rate of components, said Ping.Wu, a marketing manager of. EECX Electronic Products Division, a market manager with complex multiple systems, said, "the stiffness of wiring is low and the size is small," said Ping.Wu, the market manager of. EECX Electronic Products Division, which is composed of complex multiple systems. It is precisely because of the small size of the wiring board components, so the use of less material. " With the emergence of quality engineering, a thin flexible system is designed to be assembled in only one way, thus eliminating many human errors usually associated with independent wiring engineering.

 

What is FFC wiring

 

FFC wiring is also called flexible flat cable, which can choose the number and spacing of wire arbitrarily, make the wire more convenient, greatly reduce the volume of electronic products, reduce production cost, improve production efficiency, and is most suitable for moving parts and motherboards. PCB board is used for data transmission cable between PCB boards and miniaturized electrical equipment. The common specifications are 0.5mm / 0.8mm / 1.0mm / 1.25mm / 1.27mm / 1.5mm / 2.0mm / 2.54mm and so on.

long fpc

 

Line arrangement difference between FFC and FPC

 

FPC is the Flexible Printed Circuit flexible printed circuit, and in terms of their manufacturing, they are formed in a different way:

 

1, FPC is a kind of flexible circuit board with different single and double sides and multilayer structure, which is treated by FCCL (flexible copper foil) by chemical etching.

2, FFC is made of flat copper foil with upper and lower layers of insulating foil film, the finished product is simple and the thickness is thicker.

 

FPC