FFC and FPC Cables
FFC, or Flat Flexible Cable, is an evolution of ribbon cable in a miniature form.ffc cable They are often used in high-density electronic applications like laptops and cell phones and offer many benefits over traditional round wire and cables.ffc cable They provide a more organized wiring solution, reduce space and weight, and eliminate wire coupling problems, all while providing a robust connection that resists vibration, noise, and electromagnetic interference.
FPC, or Flexible Printed Circuit, is a more complex version of an FFC and is commonly found in products such as tablets, laptops, smartphones, and medical equipment.ffc cable It is more common for the two to be confused as they are similar, but are different in their fabrication processes and functions. FFCs are best for projects that require straightforward 1:1 connections, while FPCs are more suited to higher-speed and high-flex applications.
Both FFCs and FPCs are made from a flexible polyethylene terephthalate (PET) base with multiple copper conductors on it, but they have significantly different production methods that create each product.ffc cable Unlike FFCs, which are made by coating an insulating foil atop flat copper wires, an FPC is produced by printing and coating various layers of Flexible Copper Clad Laminate (FCCL). This process makes FPCs thicker than FFCs and results in a much more rigid and durable product.
FFCs and FPCs also have different pin layouts, which dictate their compatibility with connectors.ffc cable Type A and Type D are the two most common types of FFCs and both have one row of pins on each end. Type A pins are arranged so that both lie on the same side of the cable, while Type D pins are positioned so that one is on the top and the other on the bottom.
The number of pins on an FFC or FPC, along with their arrangement and pin pitch, determine its compatibility with connectors.ffc cable A variety of FFC/FPC connectors are available including receptacle, card edge, and solder tab contacts in single and double-row housings with varying pitches (the distance between the center of adjacent pins). They can be shielded to control EMC interference and have a range of locking mechanisms for secure attachment to the board.
The most common termination technologies for FFCs are direct solder or crimped contacts.ffc cable ELCO developed the first card edge style connector for low insertion force (LIF) mating to FFCs in 1986 and it quickly became an industry standard. This connector technology is cost-effective, reliable, and offers a low profile to allow for a smaller PCB design. In addition, the contact design ensures a low insertion force and easy unmating. It can also withstand repeated mating and unmating cycles. In addition to this, the connector can have additional features such as lock nails and retention tabs. These features make the connectors more versatile and improve their reliability for your application.
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