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FFC, FPC Connectors Application Field and Working Principle

Flat Flexible Connectors (FFC) and Flexible Printed Circuit Connectors (FPC) are an increasingly popular electronic connector type due to their small form factor, light weight, and ease of use. FFC and FPC Connectors are widely used in applications including consumer electronics, automotive, and industrial automation, among others.

Definitions

FFC Connectors are composed of two assemblies of mating contacts – a male (pin) assembly and a female (socket) assembly – that are inserted into mating frames for each side of the connection. The assemblies typically use metal contacts and the male and female assemblies are connected by a flexible flat cable (FFC). FFC Cable usually contains two parallel metal conductors, insulated from each other.

FPC Connectors are similar to FFC Connectors in that they also use metal contacts and a flexible cable, but the cable is instead composed of a printed circuit board (PCB). FPC connectors typically feature dual-row contacts on each mating side. The contacts are arranged in leading/trailing configurations, which enables better contact and connector retention.

Application Fields

FFC and FPC Connectors are widely used in a variety of electronic products due to their low profile and small size. Applications include computers, office equipment, cameras, medical devices, flat panel displays, automobiles, and other consumer and industrial equipment.

FFC Connectors can be used in a variety of data transmission applications, such as USB, HDMI, and Ethernet connections. They are also frequently used in contactless power transfer, such as Qi wireless charging. FFC Connectors are also found in hard disk drives, where they are used to interface between the main PCB and the drive’s read/write head.

FPC Connectors are often used in applications that require hermetic sealing. They are frequently found in implantable medical devices such as pace makers and heart valves, where hermetic seals are required to keep moisture and other contaminants out.

FPC Connectors are increasingly being used in larger and more complex electronic products such as automobiles. They are used to connect various sensors, ECUs, and other components in the car’s control system. They are also used to connect various elements of the infotainment system, such as audio and navigation.

Working Principle

The working principle of FFC and FPC Connectors is relatively simple. First, the male and female contact assemblies are inserted into their respective frames and the flexible cable is connected to the assemblies. The male contacts then mechanically engage with the female contacts when the frames are compressed together. The metal contacts of the FPC Connector are then soldered to the printed circuit board of the device being connected.

Once the mechanical connection has been established, an electrical connection is also formed between the male and female contacts, allowing for data transmission. The FFC Cable then acts as an electrical bridge between the male and female contacts, transferring data signals from one side to the other. In the case of FPC Connectors, the data signals are transferred through the flexible printed circuit board.

Conclusion

FFC and FPC Connectors are a popular type of electronic connectors due to their small form factor, light weight, and ease of use. They are widely used in a variety of applications, including consumer electronics, automotive, and industrial automation. The working principle of FFC and FPC Connectors is relatively simple, involving the connection of the male and female contact assemblies with a flexible cable.

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