The main types of cell phone connectors and their performance are explained!

With the rapid development of cell phone technology, cell phone parts design and production technology is constantly upgraded, the connector as one of the most important electronic components, the quality of the connector will have a direct impact on the quality of the phone and its reliability. Huicheng Yuan explains the main types of cell phone connectors and their performance!

The main types of cell phone connectors: FPC connectors: mainly used to connect the LCD display and the driver circuit (PCB).I / O connectors: contains the connection between the signal and the power supply, is the most important access channel of the cell phone. Card connector: mainly used for connecting SIM card and T-flash card, it is an indispensable part of the cell phone. Battery connector: can be divided into blade type and spring type. Currently the spring type is mainly used. Antenna connector: It is responsible for connecting the antenna and the driving circuit (PCB) of the cell phone, and its shape has a certain impact on the high frequency performance of the antenna. The main performance characteristics of cell phone connectors: 1. Mechanical properties of cell phone connectors Due to the frequent use of cell phones, the connector should have good mechanical insertion and extraction force, that is, the insertion and extraction force must meet the standards required by the industry. Usually, the insertion force standard mainly restricts the insertion force, while the pull-out force standard mainly specifies the pull-out force. If the resistance is too large when inserting or too weak when pulling out, both are not conducive to the normal use of cell phones. Another important mechanical performance indicator of a connector is its mechanical life, which is the durability of a cell phone connector. Connector suppliers need to test the connectors to ensure that the mechanical life of the product before sale is up to standard, and in the process, provide their partners and customers with knowledge about product quality.2. Electrical performance of cell phone connectors Contact resistance: low and stable contact resistance is one of the basic requirements of high-quality connectors. Insulation resistance: It can be used to determine whether the insulation between the connector contacts and the shell or between the contacts meets the standard. Dielectric strength: also known as withstand voltage, dielectric withstand voltage, used to determine the connector contacts and shell or between the contacts of the rated voltage withstand ability. Other electrical properties: vary according to the type of connector.3. Environmental performance of cell phone connectors Thermal resistance: the general rated operating temperature range of -65 ° C ~ 200 ° C (except for special products, such as high temperature special connectors). As the connector can generate heat in the work, so the operating temperature is usually considered to be the sum of the ambient temperature and junction temperature rise. Moisture resistance: The insulation of connectors can be affected by moisture intrusion, and moisture can also lead to corrosion of metal parts. For this reason, connectors are subjected to constant humidity and heat testing before leaving the factory. The test time varies depending on the product type. Salt Spray Resistance: When the connector's operating environment contains salt and moisture, electrochemical corrosion of the contact surfaces and metal structure may occur, which may affect the physical and electrical use of the connector. Vibration and shock testing: These two are one of the key properties of the connector and are important criteria for assessing the reliability of the electrical contacts and the stability of the connector's mechanical structure. Other environmental performance: according to different use requirements, some connectors have certain low air pressure, sealing (hydraulic, air leakage), liquid immersion (resistance to specific liquids) and other properties.

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