Eurocard (printed circuit board)

Eurocard is an IEEE standard format for printed circuit board (PCB) cards that can be plugged together into a standard chassis which, in turn, can be mounted in a 19-inch rack.

[1][2][3] As the cards are assumed to be installed in a vertical orientation, the usual meanings of height and width are transposed: A card might be 233.35 mm "high", but only 20 mm "wide".

IEEE 1101.10 covers the additional mechanical and electromagnetic interference features required for VITA 1.1-1997(R2002), which is the VME64 Extensions standard, as well as PICMG 2.0 (R3.0), which is the CompactPCI specification.

Other computer architectures that utilize the Eurocard system are VME eXtensions for Instrumentation (VXI), PCI eXtensions for Instrumentation (PXI), and PXI Express.

Because the Eurocard system provided for so many modular card sizes and because connector manufacturers have continued to create new connectors that are compatible with this system, it is a popular mechanical standard that is also used for innumerable "one-off" applications.

The Eurocard standard is also the basis of the "Eurorack" format for modular electronic music synthesizers, popularized by Doepfer and other manufacturers.