What is cell phone board-to-board connector? What are the main types and specifications?

The mobile phone board-to-board connector is an interface for connecting mobile phone boards, also known as FPC/FFC (Flexible Printed Circuit/Flexible Flat Cable) connector. This kind of connector can realize the signal transmission and power supply between boards, and is an important part of the internal wiring of mobile phones. Mobile phone board-to-board connectors mainly include the following types: 1. FFC/FPC ZIF connector: This connector can achieve zero insertion force, that is, there is no need to apply additional pressure when inserting FFC/FPC. The FFC/FPC ZIF connector features reliable connection, prevents error insertion, and is suitable for high frequency signal transmission. 2. FFC/FPC LIF connector: This connector is characterized by low force, easy insertion and extraction of FFC/FPC, and is suitable for low-frequency signal transmission. 3. FFC/FPC SMT connector: This connector requires surface mounting and is suitable for small board-to-board spacing, which can save board area. 4. FFC/FPC pin connector: The pins of this connector can be inserted into the sockets in the circuit board to realize board-to-board connection. The number and arrangement of pins can be customized according to specific needs. 5. Elastic plate connector: This connector is characterized by large contact area, stable impedance, and can realize high frequency signal transmission and low frequency signal transmission. The elastic plate connector has simple structure and low manufacturing cost, and is one of the common types of mobile phone board-to-board connectors. Mobile phone board-to-board connectors also have many specifications, mainly including the following aspects: 1. Interface spacing: Interface spacing refers to the distance between the two sockets of the board-to-board connector. Common interface spacings are 0.5mm, 1.0mm, 1.25mm, 2.0mm, etc. 2. Number of pins: The number of pins refers to the number of pins of the board-to-board connector, generally ranging from 20 to 200. 3. Terminal type: The terminal types of board-to-board connectors include SMT, THT, etc., where SMT refers to surface mount terminals and THT refers to pin terminals. 4. Packaging form: The packaging forms of board-to-board connectors include in-line type, SMD type, etc. 5. Operating temperature range: The operating temperature range of the board-to-board connector refers to the temperature at which the connector can work normally, generally ranging from -20 ℃ to 85 ℃. Generally speaking, the mobile phone board-to-board connector is a very important component with various types and specifications, which need to be selected and customized according to specific use scenarios and needs.

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