What is the difference between FFC and FPC connectors?

Connectors are used very frequently, and almost all of us have seen connectors in our lives. For professionals, connectors are the devices that need to be touched daily. In order to improve the understanding of the connector, this article will elaborate from two aspects: 1. A brief introduction of the connector. 2. Introduce the difference between FFC connector and FPC connector, as well as the common types of the two.

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1. Connector Introduction The connector is CONNECTOR. Internals are also called plug-ins. Plugs and sockets. Usually referred to as an electrical connector. That is, connecting two active devices to carry a current or signal. Connectors are the parts that electronic engineers and technicians often touch. Its function is very simple: to build a communication bridge between the blocked or isolated circuits in the circuit, so that the current can flow and the circuit can achieve the intended function. Connectors are essential components in electronic devices, which can always find one or more joints along the path of current flow. Because the application object, frequency, power and application environment of the connector are different, the form of the connector is also different, so the connector is also varied. For example, the connector for the stadium lighting and the connector for the hard disk are very different from the connector for the ignition rocket. However, regardless of the connection method, it is necessary to ensure that the current flows smoothly, continuously and steadily. Generally speaking, connectors are not limited to current. Today, with the rapid development of optoelectronic technology, the carrier of signal transmission in optical fiber system is light. Glass and plastic have replaced the wires in general circuits, but their functions are the same as those of circuit connectors, and connectors are also used in optical signal paths. 2. Differences and common types of FFC and FPC connectors Nowadays, the forms and structures of connectors have changed a lot. With the different application objects, frequencies, powers and application environments, the forms of connectors are varied. FFC connector is a new type of data cable made of PET insulation material and extremely thin tinned flat copper wire, which is laminated by high-tech automation equipment production line. It is soft, flexible, thin, small in size, simple in connection, convenient in disassembly and assembly, and easy to solve electromagnetic shielding (EMI). The following are the differences between the FFC connector and the FPC connector, and the common types of FFC connectors. 1. The difference between FFC and FPC connector The FFC connector is a flexible flat cable connector, while the FPC connector is a flexible printed wire. From the point of view of the two connectors, their circuit composition is different: ① The FFC uses two layers of insulating foil paper with a flat copper foil in the middle. The finished product is relatively simple and thick. ② (FPC) is a kind of single-sided, double-sided and multi-layer flexible circuit board with different line types, which is made from FCCL (Flexible Copper Clad Lining) after chemical etching. In terms of price, natural FFC connectors are much cheaper, and if production costs are taken into account, more manufacturers will choose to use the relevant design of FFC connectors. 2. Seven common types of FFC connectors Type A: both ends are connected, and the reinforcing plate is pasted on the insulating adhesive paper; Type B: the cross reinforcing plate is directly pasted on the insulating adhesive paper; Type C: the reinforcing plate at both ends is directly pasted on the conductor; Type D: the cross reinforcing plate at both ends is directly pasted on the conductor; Type E: the reinforcing plate at one end is pasted on the insulating adhesive paper, and the other end is directly soldered; Type F: two reinforcing plates are directly bonded on the insulating adhesive paper, and half of them are peeled off; Type G: two ends are directly soldered with tin. Generally speaking, the development of FFC connector technology shows the following characteristics: high speed, digitalization, high speed transmission, integration of various signal transmission, small size of products, low price of products, attachable contact termination mode, module assembly, easy plugging and unplugging, etc.

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