Form Factor. The size and shape of a board or chassis. Dimensions may be provided as a measurement in mm, or a letter code that indicates a particular size [size 'A'], or in some other unit system [1U].
FUSE. A device that has as its critical component a metal wire or strip that will melt when heated by a
prescribed (design) amperage, creating an open in the circuit of which it is a part, thereby protecting the
circuit from an over-current condition. [Fuse Manufacturers]
MILITARY SPECIFICATIONS (MIL-SPEC). Technical requirements and standards adopted by the
Department of Defense that must be met by vendors selling materials to DOD.
MILITARY STANDARDS (MIL STD). Standards of performance for components or equipment that
must be met to be acceptable for military systems. Military Specifications
SBC. Single Board Computer. Either a stand-alone computer board which does not require another board to function, or a computer board which requires a backplane or motherboard connection to receive power and pass data.
VME. An industrial board standard developed by the IEEE that uses the Euro board format/size. The IEEE 1014 defines board sizes, chassis, and electrical interfaces.
VXI. VME Extension for Instrumentation. An industrial board standard developed by the IEEE that uses the Euro board format/size. The VXI standard uses the VME spec as a base, but adds enhancements to cover Heat dissipation,
and EMI radiation.
Previous set of Chassis Terms
How To Specify a Equipment Chassis; Index page
