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D-subminiature

"D-Sub" redirects here. For subdivision surfaces, see SubD.
"DC-37" redirects here. For the trade union in New York, see District Council 37.
"Micro-D" redirects here. For American information technology firm previously known as "Micro D", see Ingram Micro.

Normal density of DA, DB, DC, DD, and DE sized connectors

The D-subminiature or D-sub is a common type of electrical connector. They are named for their characteristic D-shaped metal shield. When they were introduced, D-subs were among the smallest connectors used on computer systems.

Normal density High density Double density
Name Pin layout Name Pin layout Name Pin layout
DA-15 8–7 DA-26 9–9–8 DA-31 10–11–10
DB-25 13–12 DB-44 15–15–14 DB-52 17–18–17
DC-37 19–18 DC-62 21–21–20 DC-79 26–27–26
DD-50 17–16–17 DD-78 20-19-20-19 DD-100 26-25-24-25
DE-09 5–4 DE-15 5–5–5 DE-19 6–7–6
19-pin[note 1] 10–9 DF-104[dubious – discuss] 21-21-21-21-20[1][2]
23-pin[note 1] 12–11
  1. ^ a b non-standard shell size

Note that the "High density" and "Double density" classification here is the reverse of floppy disk nomenclature. Here, high density is only somewhat higher than normal, and not as high as double density.

  1. ^ "DF-104P D-subminiature connector pinout drawings". interfacebus.com. Retrieved 2014-07-24.
  2. ^ "104-Pin D-type Accessories" (PDF). Retrieved 23 August 2023.

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