201311-1

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Backplane Connectors - Housings

Backplane connectors are designed for broad application in various industries. Generally known as high density connectors, backplane connectors are designed to provide high levels of reliability and performance for a variety of communications and data related applications, such as communications systems, data centers, and industrial control systems. This article will discuss the application and working principle of backplane connectors.

Backplane connectors are typically used wherever there is a need to pass large amounts of data from one point to another. Typical applications include computer and electronics systems, industrial control systems, video and audio systems, test and measurement systems, and communication systems. Backplane connectors are designed to handle high-speed data transfer, with data rates of up to 10Gbps supported in some cases. Backplane connectors often require special housing or housings designed for specific requirements.

Housings are the external mechanical components of the backplane connector. They provide the physical connection between the backplane connector and other components, such as cables, boards, modules, and other connectors. Housings provide electrical isolation from the environment, strain relief to protect the cable from damage, and may include built-in grounding to reduce interference. Housings also help protect the backplane from shock and vibration and can provide EMI and ESD protection.

The working principle of backplane connectors lies in the contact systems of the housing. The basic contact system of a backplane connector consists of a housing that contains the contact system and the removable insert assembly. The housing is typically made of a dielectric material such as acrylic or polycarbonate, which isolates the pins of the connector. The housing includes an array of openings to facilitate mounting and securing of the insert assembly.

The insert assembly contains the pins of the backplane connector and is typically made of a metallic material such as brass or phosphor bronze. The contact pins of the insert assembly are usually located in an array, with spacing and loading depending on the application of the connector. The contacts of the insert assembly are inserted into an array of openings in the housing, which secure the insert assembly to the housing. Once inserted, the insert assembly is secured to the housing with special screws or clamps.

The contact pins of the insert assembly often include a spring element that provides a certain degree of self-alignment and ensures reliable electrical contact. The contact pins are attached to a contact ring, which provides a common electrical connection between all contact pins. This arrangement allows for an efficient and reliable connection between the backplane connectors, regardless of the amount of movement that may occur.

The contact system of the housing is then connected to the mating device with an appropriate cable or other connector. Once connected, the electrical signals can be passed through the connector. It is important to note that the performance of the backplane connector is highly dependent on the quality of the contact system and the amount of force exerted by the connector on the contacts.

Backplane connectors can be used in a variety of applications and environments. The operating environment for the backplane connectors must be kept within the specified operating temperature range of the connector to ensure reliable operation. The connectors must also be connected to their mating device in a manner that maintains proper contact and insulation and prevents any possibility of damage to the contacts. Failure to do this can result in poor performance or failure of the system.

In summary, backplane connectors are designed for high density applications and are characterized by strong physical and electrical connections, achieved through the use of specialized housings and contact systems. The housings provide electrical isolation from the environment and secure the insert assembly to the connector. The contact systems of the housings feature spring elements that ensure reliable electrical contact. The performance of the backplane connector is highly dependent on the quality of the contact system and the amount of force exerted by the connector on the contacts.

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