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Flat Flex Cables and Ribbon Jumper Cables are widely used in application fields, such as computer automation, electronic circuitry, and various military applications. These type of cables have two major differences - a flexible metal foil shield and a braided wire construction. Both of these materials are typically used for applications where flexibility and weight savings are important, while still maintaining a relatively high level of insulation.

Flat Flex Cables

Flat Flex Cables, sometimes referred to as “FFC” cables, consist of a single conductor, and often feature a “slip” construction. This simply means that a small piece of insulation is put between the conductors whenever they cross or rub together. This reduces wear and tear on the insulation over time and makes the cable more resistant to vibration. The insulated conductors are then covered with an aluminum foil shield which acts as an electrostatic shield, protecting the cable from external static electricity and low voltage interference.

Ribbon Jumper Cables

Ribbon Jumper Cables are a variation of FFC cables and are often found in computer applications. They are similar to FFC cables in that they feature a slip construction, but differ in that they are typically composed of many conductors that are all insulated, and the entire group of conductors are then covered with an aluminum foil shield. The purpose of the shield is to protect the cable from external static electricity and low voltage interference, just like with FFC cables. Ribbon Jumper Cables are often used in applications where multiple wires or signals need to be connected in a compact form, such as in hard drives, CD-ROM drives, and other computer peripherals.

Working Principle

The working principle of both flat flex cables and ribbon jumper cables is essentially the same. When an electrical current passes through the conductor, it generates a magnetic field which is then sent outwards. The shield on the cable acts as a shield against this magnetic field, allowing electromagnetic interference (EMI) to be blocked. Furthermore, it acts as a Faraday Cage which prevents any external magnetic fields from entering the cable. This allows the signal to be transmitted without any interference.

In addition, both flat flex cables and ribbon jumper cables are also able to filter out high frequency signals. The foil shield acts as an effective barrier against high frequency signals, ensuring that no noise can enter the cable. This is useful for applications that require accurate data transmissions or need to communicate with electronic equipment.

Flat Flex Cables and Ribbon Jumper Cables are both used for a variety of applications and are highly reliable. They both provide excellent protection against external magnetic fields, and offer good resistance to electrical noise. The principal difference between these two types of cables is the number of conductors, with Flat Flex Cables typically having a single conductor and Ribbon Jumper Cables having multiple conductors.