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Flat Flexible (FFC, FPC) Connectors are electrical connectors with a flat, flexible cable assembly that provides a continuous, low-profile connection between two boards or components. The connectors are available with either a straight or right-angled contact arrangement. FFC/FPC connectors are commonly used in consumer electronics, medical devices, and automotive and industrial applications, and their main advantages are low profile, high reliability, and cost effectiveness.

The primary use of FFC/FPC connectors is to facilitate the installation of electrical cables. These cables can be either fixed-length or variable-length. Fixed-length FFC/FPC cables are usually constructed with a single, continuous metal strand, while variable-length cables are constructed with several short strands held in place by a lamination material. The lamination material serves to not only hold the strands in place, but also to provide insulation and strain relief.

FFC/FPC connectors are typically comprised of three primary components: the contact, the housing, and the terminal. The contact is the part of the connector that actually makes contact with the signal or power lines. It may be composed of either a conductive metal alloy or a solid polymer material. The housing serves as a secure enclosure for the connector, and the terminal provides a convenient means for connecting the contact to the associated wiring. The contacts and terminals usually have a pitch between 1.27mm and 5.00mm.

The working principle of FFC/FPC connectors is quite simple. When two FFC/FPC cables are mated together, their contact fingers spring-load in to make contact with the other cable’s terminal contacts and provide a secure and stable connection. The contact fingers are made out of a material that is designed to handle the current-carrying capability of the signals that the connector is designed to carry. The connector’s housing provides additional strain relief by preventing the contact fingers from being pulled out of the housing.

FFC/FPC connectors are typically used in a variety of applications including consumer electronics, medical devices, automotive, and industrial applications. Examples of consumer electronics applications include USB cables, computer cables, and cable connections for audio/video components. In medical applications, they are used for networking and data/signal transfer between medical devices such as infusion pumps and patient monitors. In automotive applications, they are used to provide power connections and data/signal transfer between different components. And in industrial applications, they are used for wiring between printed circuit boards and in sensor wiring.

Overall, FFC/FPC connectors offer a cost-effective, low-profile, and reliable solution for cable management in a variety of applications. They are easy to install, have a wide variety of contact pitches, and are ideal for high vibration applications. Additionally, the spring-loaded contact fingers provide a secure connection even when the cables are in motion. For these reasons, FFC/FPC connectors have become widely used in today’s consumer, automotive, medical, and industrial markets.

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