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Rectangular connectors are widely used in a variety of applications, and offer a variety of advantages. This article will provide an overview of the different types of rectangular connectors, including headers, receptacles, and female sockets, and discuss the working principle and application field associated with each type.

Headers are the most commonly used type of rectangular connector. They are usually composed of two parts: a header shell, which contains separation plates called “keyways” and an array of contact pins held by the keyway. Headers are well-suited for uses in which the body of a device needs to be mechanically and electrically connected. An example of a header is the commonly used DIP (dual inline package) style.

The working principle of headers is that electric power and signals are sent through the body of the device to the contact pins, which then further transmit the electrical signals to the device they are connected to. Additionally, the physical contact between the pins and the device ensures a stable, reliable electrical connection.

Receptacles are composed of an array of pin or socket contacts mounted in a rectangular housing. This type of connector is designed to accept the insertion of an electrically compatible header, and is typically mounted directly onto a printed circuit board (PCB).

Receptacles are advantageous for applications in which the device containing the receptacle needs to be frequently disconnected and reconnected, as the contact pins of the header dock securely into the receptacle pins. The working principle of this type of connector is the same as the header discussed above, as the contact pins of the header and receptacle maintain a mechanical and electrical connection while transmitting the signals or power between devices.

Finally, female sockets are composed of an array of sockets held within a rectangular or round housing. This type of socket is especially useful for applications in which the contacts must be protected from the environment, and therefore not externally accessible. Examples of female sockets include the ATX and PCI Express power connectors commonly used in computers.

The working principle of female sockets is similar to that of the other two types of connectors discussed above. The contacts of the socket receive a male contact from the other device and establish a mechanical and electrical connection between the two components while transmitting the relevant signals and power.

In conclusion, rectangular connectors are a commonly used type of electrical connector that are essential for a variety of applications. This article has discussed the different types of rectangular connectors, including headers, receptacles, and female sockets, as well as their associated application field and working principle.

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