VITA 42 XMC Standard Products

Samtec's VITA 42 XMC is a widely deployed mezzanine standard used in high-reliability computers implementing switched-fabric architectures. XMC combines a PCI mezzanine card (PMC) with serial fabric technology on proven mezzanine form factors. The XMC standard allows for greater configuration of embedded systems on both ends of the market. With a focus dedicated to flexibility, XMC allows the designer to add modules for greater performance, additional functionality, or to upgrade an existing XMC system. Due to this modular design, XMC is well-suited for a wide variety of technologies advancing at different rates, thus extending the resourcefulness of its mezzanine/carrier cards. In 2017, VITA updated XMC’s base specification to recommend solder-ball connectors. Original parts employed Paste-On-Pad attachment, while recommended parts utilize modern solder-ball technology. VITA 42 XMC specifies solder ball-equipped SamArray® connectors in 10 mm and 12 mm stack heights supporting PCIe 4.0 performance. Optional JSOM ejector standoffs to assist in XMC card unmating are also available.