51939-884LF

Backplane connectors are a form of connection specifically designed for devices with printed circuit boards. While standard cables and connectors are designed to be used in one or two locations, backplane connectors, also referred to as motherboard connectors, are designed to be used in multiple locations on a board. This type of connector is prevalent in applications and markets that require high speed and wide bandwidth for data transfer. Specifically, the 51939-884LF brand of connector offers an array of features aimed at providing a reliable connection in a variety of complex board architectures. In this document, the applications and operating principles of this product will be explored in detail.

Application Field

The 51939-884LF is a multi-function backplane connector designed for use in instrumentation, edge computing, test equipment, multi-rack servers, and other data center and telecommunications applications. This product is notable for its ability to provide a wide range of features including signal and high-speed data rates of up to 8 Gb/s, the capability of providing 1.25A to the connected devices, and the optimization of power delivery, EMI/RFI shielding, and signal integrity. It is ideal for carrying data of high speeds between devices, especially when broad bandwidth is required.

This product also offers a comprehensive signal and power interface. It includes two pins to provide a dynamic voltage selection with a variable voltage selection from 3.3V to 12V allowing for a greater squeeze on board space. Furthermore, the rear retention latch design effectively improves robustness and mating efficiency. This style connector is offered in several versions such as 30-to-50 positions, 31-to-60 positions, 45-to-64 positions, and include multiple shell sizes for these position counts. This versatility allows users to select a configuration that better suits the needs of their application.

Working Principle

The 51939-884LF connector works on the principles of an electrical connection between two points. It provides a pathway for electricity to move from one device to the other through the connector\'s contacts. Each side has a series of pins which are held by a plastic housing and fit into corresponding sockets or “holes” on the other side when the connector is attached. This creates an electrical connection through the contact points between the two devices and allows electricity to flow through the connector.

The product also serves to protect the board and circuitry from electromagnetic interference (EMI) or radio frequency interference (RFI). EMI and RFI are generated by sources within the environment and can interfere with the operation of IT systems or other sensitive devices. The 51939-884LF’s EMI/RFI shielding is an important element in preventing EMI or RFI from interfering with the delicate signals that pass through it. This shielding ensures that the signals passing through the connection are clean and free of unwanted electrical signals.

The 51939-884LF improves signal integrity by reducing impedance, attenuation, and crosstalk. These factors prevent signal interference between circuits in the device, which can lead to board level timing errors. Additionally, the connector provides an efficient signal delivery by reducing the length of the signal path between components. The efficiency of signal delivery increases with a shorter signal path, which in turn reduces delays and maintains tight signal timing. The impact of crosstalk and delays is minimised overall with a shorter signal path.

The product also offers an optimized power delivery system which utilizes a power contact with each ground and signal contact to facilitate low impedance and improved voltage transfer. This power contact maximises power productivity and enhances current carrying capacity. The product is now a popular option for servers and telecommunications applications, as it offers high performance and signal integrity.

In summary, the 51939-884LF is a multi-function, specialized backplane connector perfect for a wide range of high-speed data applications. It is designed to provide optimal signal transmission in a compact design and ensure performance is not diminished by EMI/RFI. The optimized power delivery system offers current carrying capacity and facilitates an efficient signal delivery system. Further, the versatility in size and position count options allows customers to select the perfect product for their application.