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  2. DIN rail - Wikipedia

    en.wikipedia.org/wiki/DIN_rail

    The width of devices that are mounted on a 35 mm "top hat" DIN rail generally use "modules" as a width unit, one module being 18 mm wide. For example, a small device (e.g. a circuit breaker) may have a width of 1 module (18 mm wide), while a larger device may have a width of 4 modules (4 × 18 mm = 72 mm).

  3. Eurocard (printed circuit board) - Wikipedia

    en.wikipedia.org/wiki/Eurocard_(printed_circuit...

    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. The chassis consists of a series of slotted card guides on the top and bottom, into which the cards are slid so they stand on end, like books on a shelf.

  4. List of DIN standards - Wikipedia

    en.wikipedia.org/wiki/List_of_DIN_standards

    Two-part connectors for printed boards; dimensions for type X: Withdrawn: DIN 41612-9: DIN 41612-103: Two-part connectors for printed boards; dimensions of type M: Withdrawn: DIN 41612-8: DIN 41652-1: Rack and panel connectors, trapezoidal, round contacts 1 mm; common mounting features and dimensions; survey of types: Active: DIN 41652-2

  5. Rack unit - Wikipedia

    en.wikipedia.org/wiki/Rack_unit

    Rack with sample component sizes including an A/V half-rack unit. A rack unit (abbreviated U or RU) is a unit of measure defined as 1 + 3 ⁄ 4 inches (44.45 mm). [1] [2] It is most frequently used as a measurement of the overall height of 19-inch and 23-inch rack frames, as well as the height of equipment that mounts in these frames, whereby the height of the frame or equipment is expressed ...

  6. 19-inch rack - Wikipedia

    en.wikipedia.org/wiki/19-inch_rack

    DIN 41494 Equipment practices for electronic equipment; mechanical structures of the 482,6 mm (19 inch) series. DIN 41494-7 Dimensions of cabinets and suites of racks. DIN 41494-8 Components on front panels; mounting conditions, dimensions; DIN IEC 60297-3-100 (see above in IEC section)

  7. List of electronic component packaging types - Wikipedia

    en.wikipedia.org/wiki/List_of_electronic...

    The metric codes still represent the dimensions in mm, even though the imperial size codes are no longer aligned. Problematically, some manufacturers are developing metric 0201 components with dimensions of 0.25 mm × 0.125 mm (0.0098 in × 0.0049 in), [ 31 ] but the imperial 01005 name is already being used for the 0.4 mm × 0.2 mm (0.0157 in ...

  8. Knockout punch - Wikipedia

    en.wikipedia.org/wiki/Knockout_punch

    Chassis punches: assorted sizes round and square Chassis punches: assorted sizes round and square disassembled. In metalworking, a knockout punch, also known as a chassis punch, panel punch, Greenlee punch, or a Q-max, [1] is a hand tool used to punch a hole through sheet metal. It is a very simple tool that consists of a punch, die, and screw.

  9. Computer case screws - Wikipedia

    en.wikipedia.org/wiki/Computer_case_screws

    The #6-32 UNC screw has a thread pitch of 1/32 in (0.031250 inches (0.7938 mm)).. The #6-32 UNC is a UTS screw specifying a major thread diameter of #6 which is defined as 0.1380 inches (3.51 mm); and 32 tpi (threads per inch) which equates to a thread pitch of 0.031250 inches (0.7938 mm).