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Rectangular connectors are a type of electrical components used to make and maintain electrical connections between two or more cables. The most common rectangular connector is the header, which is an assembly of metal pins and receptacles that is mated with a corresponding assembly of receptacles and/or pins. Specialty pins are also available that allow the connection of the header to a non-standard through-hole printed circuit board (PCB). Rectangular connectors are used in a variety of applications including industrial, automotive, medical, military, and aerospace, as well as telecommunications and instrumentation systems.

The working principle of rectangular connectors is based on the insertion, and often locking, of metal pins or receptacles into appropriately sized holes. The connectors are typically made of metalized plastic, and are available in various sizes to accommodate different types of circuits. The pins are inserted into the correct size and shape of holes on the corresponding metalized plastic part, and are held in place by tension. This method ensures that the contact between the pins and the parts is reliable, preventing circuits from becoming improperly connected or short circuited. Furthermore, in order to ensure a secure connection, the rectangular connector typically contains clamps or screws that keep the pins in place.

In order to ensure the desired signal, current, or power is transmitted between the pins, contact surfaces are often plated with gold, nickel, or copper. This plating helps create and maintain a reliable connection between the pins, and prevents corrosion from affecting the contact surfaces. Plating also helps minimize contact resistance, improving performance and signal integrity.

Rectangular connectors are becoming increasingly popular due to their enhanced performance and reliability. They are available in both single and double pin varieties for applications such as connectors used in mobile telecommunication systems and personal computers. This type of connector has the ability to support a variety of circuits within a single connector, reducing the number of parts needed and increasing signal integrity. Additionally, the connectors are reliable, light weight, and easy to handle, making them ideal for use in a variety of applications.

In summary, rectangular connectors are highly versatile electrical components used to make and maintain electrical connections between two or more cables. The connectors are usually made of metalized plastic, and are available in a variety of sizes and shapes to accommodate different types of systems. The pins are held in place by tension, and contact surfaces are often plated with gold or nickel to prevent corrosion and improve performance. Rectangular connectors offer enhanced performance, reliability, and versatility, making them ideal for use in a variety of applications.

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