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Rectangular connectors have long been used in a variety of applications, such as power, data, signal, and even audio and video. The connectors require their contacts to be mechanically connected to each other in order to enable communication back and forth between them. These contacts are generally divided into two categories, headers and male pins. Each type of contact has its own unique working principle which in turn makes them suitable for different applications.

Headers

Headers are the female part of the rectangular connector and are the ones that receive the male pins. Generally, the contacts of the header are designed in an inline or angled configuration. One of the points to consider when selecting a header is how many contacts it contains. They typically range from 2-50 contacts. Other considerations are the contact pitch, current carrying capability, contact diameter, and contact finish. The working principle of headers is that when the male pins are placed into the female housing, the contacts of the header provide a path for an electrical current to flow.

Male Pins

The male pins of the rectangular connectors are the part that is inserted into the header. They can be either straight or right angled. The contact pitch of the male pins can range from 2.54 mm (0.1 inch) to 5.00 mm (0.2 inches). The purpose of the male pins is to make contact with the corresponding contacts of the header in order to establish an electrical connection. Much like the headers, the pins also have different current ratings and contact diameters which all need to be taken into consideration when selecting the appropriate connector type. The working principle of male pins is that when they are properly connected to the header, they provide a path for an electrical current to flow.

The working principles of headers and male pins make them suitable for a wide range of applications. Some of the most common applications of rectangular connectors are in motor controls, robotics, automotive, aircraft, computers, and industrial equipment. They are also widely used in consumer electronics, medical devices, and many other applications.

Rectangular connectors are one of the most important components in the electronics industry. Their versatility and durability make them the go-to choice for many applications. With the proper implementation and usage of headers and male pins, users can be sure to get reliable connections and satisfactory performance.

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