Dsub Connector with emi end

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Mechanical Components

D-Sub Connector Dimensions


This page provides the physical out-line and Mechanical Dimensions for all the different styles of Subminiature D connectors.
The term commonly used for this style is D-Sub connectors, or just Dsub.

D-Subminiature Out-line
D-Subminiature Connector, Mechanical drawing

The graphic above gives the mechanical dimensions for a D-Subminiature connector. D-Sub Connector manufacturers
Use the table below to obtain the absolute shell dimensions based on the size and number of pins used with the connector.

Shell size 1 is used with the 9 pin D and the high density [3-row] 15 pin D connectors.
Shell size 2 is used with the standard density [2-row] 15 pin D and the 26 pin D connectors.
Shell size 3 is used with the 25 pin D and the 44 pin D connectors.
Shell size 4 is used with the 37 pin D and the 62 pin D connectors.
Shell size 5 is used with the 50 pin D and the 78 pin D connectors.
Shell size 6 is used with the 104 pin D connector.




D-Subminiature Connector, Mechanical figures and sizes
Physical Connector Dimensions by Shell Size

Shell size: DA, DB, DC, DD, and DE. {see below}
Standard (size 20 contacts): 9, 15, 25, 37, and 50 pins (IAW DIN 41 652,MIL-C-24308,IEC807). Also available as dual (mixed) stacked.
High Density 'HD' (size 22 contacts):15, 26, 44, 62, 78, and 104 pins
Power 3W3, 3WK3, 5W5, 8W8; 3, 5, 8 single row High Power Contacts





Note the amount of space a Dsub takes up on a printed circuit board depends on its placement.
A right angle connector will require a footprint determined by the number of pins in the connector.
With each row of pins requiring more board space.

How to count the pins of a Dsub;
D-Sub Connector Insert Arrangements


D-Sub Connector types: all shell sizes


Board Mount D-Sub Connectors:
...Right Angle D-Sub Connector
......Through-Hole D-Sub Connector
......Surface Mount D-Sub Connector SMT
......Dual Port Two connectors stacked together

Stacked D-Subminiature Connectors
Stacked Dsub

...Straight D-Sub Connector: Solder
......Press-fit D-Sub Connector: Solderless [Compliant Pin definition]
......Wire Wrap D-Sub Connector: Solder-less [Wire Wrap definition]
Cable D-Sub Connectors:
...IDC D-Sub Connector; Discrete Wire
...IDC D-Sub Connector; Flat Ribbon Cable [Insulation Displacement D-Sub Connector Dimensions]
...Crimp Snap-in D-Sub Connector; Discrete Wire
...Solder Cup D-Sub Connector; Discrete Wire

Types of DSub Shell Sizes
Standard Density High Density
DA Shell 15 position HD DA Shell 26 position
DB Shell 25 position HD DB Shell 44 position
DC Shell 37 position HD DC Shell 62 position
DD Shell 50 position HD DD Shell --
DE Shell 9 position HD DE Shell 15 position

D-Sub connector common usage in personal computers;
9-pin DE D-Sub connectors are used as an RS232 Serial port
15-pin DA D-Sub connectors are used as an SVGA Video port
25-pin DB D-Sub connectors are used as a parallel / printer port
Note that most people just use the term 'DB'; DB9, DB15, DB25.
Many new PCs no longer use Dsub connectors,
The serial and parallel port connectors have been replaced by USB connectors.
The older SVGA ports replaced by DVI, or DisplayPort interfaces.

D-Sub Connector Terms:
HD: High Density [normally more than two rows of contacts]
Filtered: [Pin-Filtered] Suppress electro-magnetic interference (EMI) or radio frequency (RFI)
High Density, HD: Pack 3 rows of pins into the next smaller 2-row shell size, 15-pins into a 9 pin shell size
IDC: Insulation Displacement Connection [MIL-DTL-24308/27]
IEC: (International Electrotechnical Commission) ~ an International Standards Body
MIL: Military, as in Department of Defense Standard 'DOD'
MIL-C-24308: Connectors, Electrical, Rectangular, Miniature, Polarized Shell, Rack and Reel, Shield, Straight, Deep
MIL-DTL-24308; A sub-standard of MIL-C-24308. DTL stands for Detail Specification Sheet
RoHS: Restriction of Hazardous Substances
SMD: Surface Mount Device [any non-through-hole component]
SMT: Surface Mount Technology
THR: Thru Hole Reflow, 'Pin in Paste'





D-Subminiature connectors are listed on the following pages;
Commercial D-Sub Connector manufacturers page.
Military D-Sub Connector manufacturers, Mil-C-24308, listing companies that manufacturer Dsub connectors [to military specifications].
Related page; Military Connector Specifications

Editor note; I think MIL-C-24308 has been withdrawn and replaced by MIL-DTL-24308.
In any case this is an out-dated style of connector. They are still widely used, but Db connectors are on the decline.


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Modified 3/04/12
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