Edge card connectors produce higher speeds and proper alignment

Samtec has expanded its edge card connectors with 0.8 and 1.0mm pitch sockets designed for higher speed applications and optimal mating alignment.

The 0.8mm pitch socket (HSEC8-DP series) is a differential pair version of Samtec’s Edge Rate 0.8mm pitch sockets. Rated for speeds up to 28Gbit per second NRZ/56Gbit per second PAM4, the socket features Edge Rate contacts designed to increase cycle life and decrease crosstalk. The double row socket, with eight to 56 total pairs and optional rugged weld tabs, mates with standard 1.6mm (0.062-inch) thick cards.

Optimised for performance to 28Gbit per second, the 1.0mm pitch edge card socket (HSEC1 series) also features signal integrity optimised Edge Rate contacts with alignment pin and rugged weld tab options. The socket is available with up to 140 total positions and mates with standard 1.6mm thick cards. For specific applications, this edge card socket can help mitigate misalignment in the x and y axes to ensure optimal contact/pad connection, says Samtec.

The smooth, broad, milled mating surface of the Edge Rate contacts minimises the effects of broadside coupling, which decrease crosstalk for signal integrity performance. Increased impedance control is achieved by a straight, more consistent material cross section. Robust when mating and unmating, this contact system also features a long contact wipe up to 1.5mm, which improves the mating angle tolerance. In addition, Edge Rate contacts are suitable for a variety of high-speed protocols and standards.

The 0.8mm pitch Edge Rate sockets (HSEC8 series) are available in vertical, pass-through, right-angle or edge mount orientations, and elevated stack heights to 3mm. A micro 0.5mm pitch socket (MEC5 series) features a justification beam that enables the use of standard PCB tolerance and is PCIe Gen 4-compliant.

Standard high-speed edge card sockets include the 0.635mm (MEC6 series), 0.8mm (MEC8 series), 1.0mm (MEC1 series), 1.27mm (MECF series) and 2.0mm (MEC2 series). The 1.0mm pitch PCI Express socket (PCIE series) supports one, four, eight and sixteen links with a low-profile version (PCIE-LP series) compatible to Gen 4 speeds. The 1.0mm pitch micro plane socket (SAL1 series) is SATALink-compatible and mounts in pairs to accommodate various mating card thicknesses.

Samtec’s Signal Integrity Group provides application support via its in-house engineers for these edge card connectors and other products. The engineers help with full-channel analysis, high-data-rate simulations, application-specific design and development assistance, and advanced design support.


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