17011102402 Datasheet/PDFBackplane connectors have been in the market for years but have recently seen increased demand in applications requiring the very highest levels of energy efficiency, reliability and durability. Although these connectors come in several different types, two very distinct varieties are the Hard Metric and Standard backplane connectors. Both types offer unique advantages depending on the particular application’s needs.
17011102402 Hard Metric Backplane Connectors
One of the main features of Hard Metric backplane connectors is their high level of electrical performance. They feature a wide range of circuit configurations including low voltage up to 100V AC and high voltage up to 800V AC, with single-leg circuit designs or multi-level interface options. This makes them incredibly versatile for wiring multiple levels of circuits and power systems. In addition, Hard Metric connectors feature low-profile contact designs that are said to reduce the frequency of interconnect contact bouncing compared to standard connectors. This contributes to improved durability by helping ensure proper electrical contact between the contacts.
Hard Metric connectors use a pitch size of 1.27mm and are available in various forms, including plug-in, right angle card-edge, and throughhole, as well as custom designs.
17011102402 Standard Backplane Connectors
Standard backplane connectors are the traditional type of connectors found in most networking and computer systems. They use a common pitch size of 2.54mm and feature an open frame design that allows for a wide range of design options. They are generally available in pin header, dual in-line header, and dual in-line wire form configurations.
Standard backplane connectors are generally less expensive than Hard Metric connectors, and provide a variety of design options for circuit types including multiple wiring options as well as a wide variety of contact configurations. However, they also tend to suffer from higher levels of contact bouncing and electrical noise, which may result in shorter product lifespans or reduced reliability.
17011102402 Working Principle of Backplane Connectors
In general, backplane connectors are designed to create and maintain a reliable electrical connection by using contact interfaces that are held in place by a mechanical force such as a screw connection or clamping mechanism. This contact interface typically includes a contact finger, or “socket”, on each side of the connection, which when the connection is closed and the contact fingers are held together creates an electrical connection that allows for signal and power transmission.
The working principle of the backplane connectors is ultimately determined by the type of connector used. For example, Hard Metric connectors use a card-edge design that is locked in place at the top and bottom to maintain contact. Standard connectors, meanwhile, typically use a pin header design, where the contacts are held in contact with each other by spring-loaded lateral links or screws. Ultimately, the choice of connector depends on the desired application requirements.