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Flat Flex Ribbon Jumper Cables: Application Field and Working Principle

Flat Flex Ribbon Jumper Cables, commonly referred to as FFRJs, are a series of insulated and uninsulated wire jumper cables that are used for different types of applications. The flat flex jumper cables are widely used in industrial, automotive, and consumer electronics applications as they provide electrical connections, power, and ground paths between electronic components. FFRJs come in various lengths and gauge sizes that allow for a wide range of applications from connecting two components on a mainboard or within a piece of equipment to connecting ground paths between two power supplies.

Design and Structure

FFRJs are composed of thin metallic strips that are bonded to each other in order to form a flexible ribbon. The metallic strips are usually composed of copper, brass, or aluminum. The ribs are then equipped with insulation like polyvinylchloride (PVC), polyurethane (PU), polyester, or nylon which provides electrical insulation and protection from corrosion. The insulation also prevents the metallic strips from bumping in to each other and creates a secure connection. Additionally, the insulation prevents the electrical charge from discharging to a ground path.

Types

FFRJs are commonly available in two types. The first type is the Pvc coated FFRJ which is constructed from a series of metallic strips that are surrounded by PVC insulation. The second type is the shielded FFRJ which consists of a metallic strip with an external shielding layer. This shielding layer is usually composed of a metal foil or a metal braiding for added EMC protection.

Applications

FFRJs are widely used in different types of applications, most notably in the automotive and consumer electronics industries. In the automotive industry, FFRJs are used to provide electrical connections between different electrical components such as motors, ECUs, and sensors. In the consumer electronics industry, FFRJs are used in different types of applications, ranging from connecting internal components to connecting external peripherals like mice, keyboards, and USB sticks. Additionally, FFRJs are commonly used to connect external hard drives and other storage media. FFRJs are also used as a space-saving solution and are often used to connect multiple smaller components on a single mainboard.

Working Principle

The working principle of FFRJs is based on the transfer of electrical current between two or more components. This can be done by making direct contact between the metallic strips of the FFRJ. The insulation that is present around the metallic strips prevents a direct electrical contact between the strips and thus prevents any electrical discharge to the ground. Additionally, the shielding present on some types of FFRJs will ensure that any external electromagnetic interference is minimized.

Advantages

The advantages of using FFRJs over traditional jumper cables include a low profile which makes them much easier to install and remove, the fact that they are insulated so that they are safer to work with, their flexibility which allows them to easily connect to tight or hard-to-reach spaces, and their affordability. Additionally, FFRJs can be easily customized to different lengths and gauge sizes which makes them ideal for different types of applications.

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