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Edge Card Connectors

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About Edge Card Connectors

Edge card connectors are embedded devices that mate with the edges of single-sided or double-sided printed circuit boards (PCBs) in order to provide an external electrical connection. Industry standards define power specifications such as voltage levels, power pin placements, and power requirements. For example, PICMG 1.0/1.2 standards define the power specifications for peripheral component interconnect (PCI) and industry standard architecture (ISA) buses. The contacts of edge card connectors are made of metal and are plated with a thin, metallic coating that improves conductivity and prevents rust and corrosion. Plating materials include gold, copper, nickel, and silver. Contacts are housed in a termination assembly that is usually made of plastic. Edge card connectors are used widely in personal computers (PCs) and, depending on their components, are suitable for some lead-free applications.

Typically, edge card connectors are available with one or two rows of contacts. Contact pitch, the distance between pins, ranges from as small as 0.0197'' or 0.5 mm to as large as 0.111'' or 2.84 mm. Some edge card connectors are straight. Others are right-angled. A variety of termination options are available. Crimping compresses or deforms a contact wire barrel around a conductor. Wire wrapping requires the use of a special tool to wrap a stripped or unstripped wire around a terminal post that contains a series of sharp edges. Insulation displacement connectors (IDCs) force an insulated conductor into a restrictive slot, slicing through insulation. In PCB solder or solder pin termination, electrical connection is made by soldering wires or pins onto a printed circuit board. With solder cup terminations, soldering the connector onto the mounting location creates an electrical connection. Termination methods also include cage clamps, screws, lugs, and quick-connect tabs.

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Products & Services Related to Edge Card Connectors

Circular Connectors
Circular connectors are multi-pin connectors primarily used for external interfacing.
D-subminiature Connectors
D-subminiature or D-sub connectors are sturdy electrical connectors with a mating face shaped like the letter D. They provide polarization because male and female connectors can fit together in only one way.
DIN Connectors
DIN connectors are high frequency, multi-pin, electrical connectors that meet standards established by Deutsches Institut für Normung (DIN), a German national organization for standardization. The ends of DIN connectors are round, notched, and protected by a metal skirt to ensure that pins line up correctly.
Electrical Connectors
Electrical connectors are devices that join electrical circuits together. Male connectors plug into receptacles, jacks, and outlets. Female connectors contain sockets to receive other devices.
Fibre Channel Connectors
Fibre Channel connectors are high-speed connectors used in Fibre Channel systems.
Micro Connectors and Nano Connectors
Micro connectors and nano connectors exhibit contact pitches of 0.05'' (micro) and 0.025'' (nano), respectively.
RF and Microwave Connectors
RF and microwave connectors are used to connect the ends of cables in systems that operate in the radio frequency (RF) or microwave spectrum. They include threaded or bayonet-style couplings that snap, screw, or push into place.

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Engineering Web: Edge Card Connectors

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Expansion card - Wikipedia, the free encyclopedia
One edge of the expansion card holds the contacts (the edge connector) that fit exactly into the slot.
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Part Numbers for Edge Card Connectors

Part # Distributor Manufacturer Product Category Description
08-05-0301 Digi-Key Molex Connector Corporation Connectors, Interconnects CONN TERM FEMALE 18-24AWG 15GOLD
08-05-0302 Digi-Key Molex Connector Corporation Connectors, Interconnects CONN TERM FEMALE 18-24AWG 15GOLD
88114-1 Digi-Key Tyco Electronics Connectors, Interconnects KEYING PLUG FOR CARD EDGE CONN.
640113-3 Digi-Key Tyco Electronics Connectors, Interconnects CONN EDGE 28POS DOUBLE SIDED PCB
61668-1 Digi-Key Tyco Electronics Connectors, Interconnects CONN TERM 18-22AWG CRIMP TIN.100

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