D-sub Connectors
D-sub Connectors (full name D-subminiature) are a common electrical connector introduced by Cannon in 1952. D-sub connectors are most often used for communication such as serial or video data.
The most common D-sub connector for automotive applications is the DE-9 connector (more commonly mislabeled as a DB-9 Connector) for diagnostic tools, data loggers, CAN tools, etc.
The most recognizable D-sub connector to people over 30 is the DE-15 connector, AKA the "VGA connector" which is typically coded blue in color.
D-sub Connector Types:
A D-sub contains two or more parallel rows of pins or sockets usually surrounded by a D-shaped metal shield, or shell, that provides mechanical support, ensures correct orientation, and may screen against electromagnetic interference. The hexagonal standoffs (4-40 bolts) at both sides of each connector have a threaded stud fastening the connectors to the metal panel and accept a 3/16" hex socket.
| 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-9 | 5–4 | DE-15 | 5–5–5 | DE-19 | 6–7–6 |
| 19-pin | 10–9 | 104-pin | 21–21–21–21–20 | ||
| 23-pin | 12–11 | ||||
Note that the high density and double density classification here is the reverse of floppy disk nomenclature. Here, high density is intermediate, between nominal and double density. | |||||
D-sub Connectors are available from various manufacturers such as:
