Fpc connector structure and working principle
Working principle of FPC connector
FPC translated into Chinese is: Flexible printed circuit boards are generally called PCB connectors made of soft materials (materials that can be folded and bent). It is used to connect the LCD display to the drive circuit (PCB), mainly with 0.5mm pitch products. 0.3mm pitch products have also been widely used.
With the trend that LCD drivers are integrated into LCD devices, the number of FPC pins will decrease accordingly, and related products have appeared on the market. From a longer-term perspective, in the future, FPC connectors will be expected to be integrated with other mobile phone components on the frame of the mobile phone or its LCD module.
Fpc connector products are mainly used in various digital communication products, portable electronic products, computer peripheral equipment, measuring instruments, automotive electronics and other fields. Such as mobile phones, digital cameras, notebook computers, MID, MP3, handheld game consoles, audio systems, etc.
FPC connector, under the mounting height of the printed circuit board with a contact pin of 3mm, flip lock (one contact pin rotation system) to prevent falling off and oblique mating of the FPC, flexible pin design. Available in IF and non-ZIF parts. Available in 0.3, 0.5, 1.0, and 1.25mm midline existing tin-lead or lead-free surface mount, four-hole, vertical and right-angle available stack top or bottom contact.
Fpc connector characteristics
The interface of the fpc connector should be miniaturized. As many products face smaller and concise interfaces, the requirements for the use of fpc connectors will be more sophisticated. For example, the most commonly used wire-to-board interfaces are small distance 0.6mm and 0.8mm, high density, high speed transmission, and high frequency direction interface. Miniaturization means that the distance between the base of the fpc connector is smaller. High-density is a complete core count.
The high-density fpc connector has a total of 600 cores of useful touch parts, and the special equipment can reach up to 5000 cores. High-speed transmission means that modern computers, information technology and network technology require signal transmission at a time-scale rate of up to megahertz frequency band, and pulse time reaches sub-milliseconds, so high-speed transmission fpc connectors are required. High frequency is to open up the habit of millimeter wave technology, RF coaxial connectors have entered the millimeter wave operating frequency band.
FPC connector structure principle
For users who often deal with fpc connectors, it is very necessary to understand some knowledge of the structure and principles of fpc connectors. So what is the structure principle of the fpc connector? The following editor will give you a popular science about the structure principle of the fpc connector.
FPC connectors can be made thinner and reduce the size of the connector. And seeking miniaturization, high frequency signal transmission connector, this connector consists of four parts: They are rubber core, tongue piece, terminal, welding piece. The following is the knowledge explanation of these four parts;
1. The function of the FPC connector rubber core is to protect the terminals, to insulate, to guide the connection during connection, and to provide mechanical strength. The manufacturing process of the FPC connector rubber core generally uses an injection molding process, and the material is mostly PA9T material.
2. The function of the FPC connector tongue is to crimp the cable, insulate, guide the connection during connection, and provide the strength of the mechanism. The manufacturing process of the FPC connector tongue is generally injection molding, and the material is PA10T and PPS.
3. The function of the FPC connector terminal is the conductor transmission of electronic signals. The manufacturing process uses a stamping + electroplating process (gold or tin plating to improve the soldering ability of the product), and the material uses phosphor bronze C5191.
4. The function of FPC connector soldering sheet is component positioning, fixing, increasing strength, etc. The manufacturing process also uses a stamping + electroplating process (gold or tin plated to improve the welding ability of the product), and the material is bronze C2680.
