Here are some common connectors:
Classification by appearance
• Circular connector: The basic structure is cylindrical. Most plugs and sockets are threaded. The number of terminals can range from two to hundreds. It is small and reliable. It can meet the needs of cable connection between electronic devices. It is often used in industrial vehicles and equipment.
• Rectangular connector: It usually has multiple pins arranged in a rectangular shape, which is convenient for high-density connection on the circuit board. Common ones include D-sub connectors and HDMI connectors.
Classification by application field
• Data communication connector: Such as RJ45 connector, which is mainly used for network connection. It is a common connector for Ethernet interface, which can realize data transmission between computers, routers, switches and other devices.
• Power connector: It is used for circuit connection between cables and cables of electrical and electronic equipment, and cables and equipment to transmit larger current and voltage so that the equipment can operate normally. Common ones include computer power cord interface and Anderson power pole.
• RF connectors: such as SMA, N, BNC and other connectors, mainly used in RF transmission, electronic measurement and high-speed data transmission, etc., can maintain good performance under high-frequency signals, and are widely used in wireless communication, radar systems, satellite communications and other fields.
Classification by installation method
• Board-to-board connector: mainly used to connect two circuit boards to realize signal and power transmission, with the characteristics of miniaturization, high density, high reliability, etc., commonly used in computers, mobile phones, tablet computers and other electronic products.
• Wire-to-board connector: used to connect wires and circuit boards, usually with a welding or crimping wire connection end at one end, and a plug or socket connected to the circuit board at the other end, widely used in the internal circuit connection of various electronic devices.
• Wire-to-wire connector: used to connect two wires, common ones include Anderson power poles, round aviation plugs, etc., which can realize electrical connection between different wires and are suitable for wiring of various electrical equipment and systems.
Classification by connection properties
• Removable connector: such as Hirose PFi series, this type of connector can be easily plugged and unplugged, which is convenient for equipment assembly, maintenance and replacement, and is widely used in various electronic equipment and systems that need to be frequently disassembled and connected.
• Fixed connectors: such as those used for fixed connections of solar panels. They usually do not need to be frequently disassembled after installation. They have high stability and reliability and can ensure long-term stable electrical connections.
Classification by structural features
• Waterproof connectors: such as Molex’s Mini-Fite H20, which has waterproof, dustproof, moisture-proof and other functions, can ensure the reliability of electrical connections under harsh environmental conditions, and are often used in outdoor electronic equipment, automobiles, ships and other fields.
• Multi-core connectors: such as Haring’s Han series, which have multiple core wire connection points and can transmit multiple signals or power supplies at the same time. They are suitable for complex electrical systems and equipment and can meet the transmission requirements of different signals and power supplies.
