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Rectangular Connectors - Arrays, Edge Type, Mezzanine (Board to Board)

In complex electronic circuits, rectangular connectors allow for the connection of two or more circuits simultaneously for large-scale applications. Various types of rectangular connectors are used today, including arrays, edge type, and mezzanine board to board connectors. Each of these types of connectors is designed with specific applications in mind and work different principles. Let’s look at each of these types of rectangular connectors in more detail.

Arrays

Arrays are rectangular connectors used in applications where multiple conductors are needed. They are typically found in RF, high-speed communications, or power applications. As such, they usually contain many contacts and have a high current density. Array connectors are available in surface-mount and through-hole configurations, and they can be found in a variety of shapes, sizes, and contact pitches.

To ensure a strong connection, array connectors are designed with a resilient contact retention feature that ensures the contacts are firmly held in place during use. This prevents the connectors from being damaged or creating an intermittent or poor connection. The array connectors also use a variety of contact styles, including hermetic, shielded, overmolded, and spring contacts. They are usually designed as single row, dual row, or multi-row connectors.

Edge Type

Edge type connectors are designed for PCBs, and they are especially useful for applications where small space and high signal integrity are important. They are available in both surface-mount and through-hole versions, and they have a broad range of contact styles including hermetic, shielded, and overmolded. Edge-type connectors are designed with an offering of shells and mounting styles, including press-fit applications.

As far as the connection, these connectors use a double contact system which ensures a good connection between the contacts and the PCB. The double contact design also helps to protect the contacts from arcing and prevents the possibility of shorts. The connectors also use a special locking mechanism which provides a secure connection and prevents the pins from being pulled out during application.

Mezzanine (Board to Board)

Mezzanine connectors, otherwise known as board-to-board connectors, are designed to allow two separate PCBs to be connected to each other. They are found in various designs, shapes, and sizes, and they are usually used in a variety of industrial, automotive, and biomedical applications. Mezzanine connectors use high-density contact designs and high current carrying capacity.

These connectors use two types of connection systems. The first is a press-fit which provides a secure connection between two boards. The second is a surface-mount system which allows the boards to be securely mounted to each other without the need for special tools or equipment. Mezzanine connectors also use flexible key and guide systems to help ensure a strong connection between the two boards and reduce the risk of misalignment.

In summary, rectangular connectors are used in a variety of applications and are designed to meet the demands of the application. Arrays are used in RF, high-speed communication, or power circuits and have a high current carrying capacity. Edge type connectors are designed for PCBs and have a double contact system to ensure a good connection. And finally, mezzanine (board to board) connectors are used to connect two separate PCBs and use a variety of connection systems to ensure a secure connection.

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