17030554212

Series:	har-bus® HM
Packaging:	--
Lead Free Status / RoHS Status:	--
Part Status:	Active
Moisture Sensitivity Level (MSL):	--
Connector Type:	Header, Male Pins
Connector Style:	--
Number of Positions:	--
Number of Positions Loaded:	--
Pitch:	0.079" (2.00mm)
Number of Rows:	--
Mounting Type:	Through Hole
Termination:	Press-Fit
Connector Usage:	--
Contact Finish:	Gold or Gold-Palladium
Contact Finish Thickness:	--
Current Rating:	1A
Voltage Rating:	--
Operating Temperature:	-55°C ~ 125°C
Features:	--

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Backplane connectors are the ubiquitous links that allow electrical and signal interference between two circuit boards. They enable electrical communication between circuit boards in order to enable high-speed applications such as servers, routers, switches, and embedded systems. This article is intended to provide an overview of the various types of backplane connectors, the technologies behind them, and how they are used in a variety of application fields and working principles.Hard Metric ConnectorsHard metric connectors (also known as HM or HMC) are a high-speed backplane connector system developed by the COMPACT (COMmunication Access Portable Testbed) consortium. They are metallic connectors that provide fast transmission between high-speed signal pins, and are usually used to interconnect motherboards, expansion cards, and computing systems. Hard metric connectors are characterized by having an extended connector length, larger pins, and an increased number of contacts. The extended length increases the number of available pins that can be used for long-haul signal transmission and the contact centers are also farther apart so that the signal can move in predictable directions. The large pins also increase the number of signal paths that can be established and the contact-centers reduce electrical noise and crosstalk.Standard ConnectorsStandard connectors are the most commonly used type of backplane connectors, used to connect a wide range of PC devices such as motherboards, expansion cards, hard drives, etc. They are commonly known as PCMCIA cards and, as their name implies, adhere to a certain set of physical and electrical specifications developed by the Personal Computer Memory Card International Association (PCMCIA). Standard connectors come in a variety of sizes and a variety of pin configurations. They typically have a small number of pins, ranging from 5 to 40, and the contacts are arranged parallel to each other for low-speed signal transmission.Working PrincipleThe working principles of backplane connectors relies on an understanding of physical and electrical properties of the connector itself. The physical properties determine how the contacts are placed, how the signals can move, and the electrical properties determine how much current can flow through the connectors. For instance, for a Hard Metric connector, the contact centers are typically placed farther apart which reduces crosstalk and lowers power consumption. The electrical current requirements of a Hard Metric connector are typically higher than those required for a Standard — allowing for higher speed transmissions and the use of higher voltages.Application Field and Working PrincipleBackplane connectors are used in a variety of applications and industries, including computers, automotive, medical, aerospace, industrial automation, telecommunications, and consumer electronics. The most common uses of backplane connectors are in data centers server rooms, storage networks, telecommunications systems, and embedded systems. For example, in data centers, server board-to-backplane connections enable the transfer of data between individual servers, as well as enabling shared resources like storage to be shared and used across multiple servers. In storage networks, backplane connectors enable the transmission of data between multiple storage devices, while providing address signals that enable individual devices to be managed and monitored remotely.In automotive and industrial applications, backplane connectors are used to provide a low-profile and vibration-resistant connection between circuit boards in automotive, industrial automation, and embedded systems applications. Hard metric connectors are the most widely used in these applications due to the increased signal speed and power capacity provided. In the medical field, backplane connectors are used to connect components used in medical imaging, patient monitoring, and other medical equipment, as well as providing communication between these systems.In conclusion, backplane connectors provide a reliable and efficient connection mechanism between electronic components, enabling fast speeds, increased power capacity, and reliable low-profile connections. They are used in a variety of application fields and according to the type of connector used, the working principle varies between increased speed, increased power, and low-profile connections.

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