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Rectangular connectors - arrays, edge type, mezzanine (board to board) connectors are utilized to electronically connect two separate printed circuit boards (PCB) and are designed to carry a variety of signals in different applications. By nature, rectangular connectors encompass an array of positioning, part counts, board levels, pin configurations, mounting styles, and genders. Different versions have specific features which improve performance and usability.

Types of Rectangular Connectors

There are different types of rectangular connectors that can be used depending on the application. Edge type rectangular connectors are typically used for applications that require rugged, reliable, and long-term connectivity between two PCBs. Edge type rectangular connectors generally feature metal clad construction with removable contacts. The contacts are held in a molded body with latches or screws, giving it superior mechanical strength. Due to the metal construction, these connectors are often used in data and bus communication and military applications.

Mezzanine (board to board) connectors are used for applications requiring high speed data transfer in a compact package. These connectors come in a variety of sizes and configurations, making them suitable for a wide range of applications. The contacts in mezzanine connectors are generally held in place with mechanisms such as screws or latch locks, and the connectors are designed to withstand high speed data transmission. Mezzanine connectors are often found in high speed communications or computer applications.

Application Areas

Rectangular connectors are found in a variety of applications, from consumer electronics to industrial automation. Edge type rectangular connectors can be used in data and bus communication applications, while mezzanine connectors are often used in high speed and computer applications. In consumer electronics, these connectors are often used to connect power supplies and video sources. In industrial automation, they are used to connect motors and controllers, providing a reliable, rugged connection.

Working Principle

The working principle of a rectangular connector is straightforward. It consists of two mating pieces, each containing contacts. One of the pieces is attached to a circuit board, and the other is usually mounted on another board or a machine. The contacts on the connector pieces mate when the two pieces are fitted together, forming an electrical connection. Depending on the type of connector, the contacts may be soldered on the circuit board, or may be held together with a locking mechanism, depending on the specific application.

Different types of rectangular connectors may also contain a safety latch or a mechanical lock. These are important in applications where the connection must be secure, such as when two boards are connected together. The lock prevents the two pieces from accidentally falling apart. Some connectors also have electromagnetic interference (EMI) shielding which helps protect the signals from external interference.

Conclusion

Rectangular connectors are a versatile type of connector, and there are a variety of different types available. Edge type and mezzanine connectors are designed to provide robust, reliable connections between two PCBs. These types of connectors are often used in data and bus communication, high speed applications, consumer electronics, and industrial automation. The working principle is fairly straightforward, and involves two mating pieces with contacts that connect when fitted together.