D-Sub Cables
D-Sub Cables are cable assemblies based on D-Sub connectors, which are widely used for signal transmission and power connection between electronic devices.
1. What are the Features of D-Sub Cables?
D-Shaped Shielding Design
D-shaped metal or plastic shell is used to ensure mechanical strength and electromagnetic shielding effect, effectively reducing EMI/RFI interference.
The shell is fixed by bolts or thumbscrews, suitable for harsh environments such as vibration and impact.
Contact Layout
Standard models contain two or more rows of parallel pins (common 9, 15, 25, 37, and 50 pins), supporting signal, power, and mixed transmission needs.
High-density models integrate more contacts of the same size to meet complex connection needs.
Materials and Protection
Metal shells (such as aluminum alloy, and galvanized steel plate) provide mechanical protection; some models adopt waterproof design, suitable for outdoor or humid environments.
The shielded backshell contacts the cable braid to enhance EMI protection.
2. What are the Types of D-Sub Cables?
1) By Size and Pin Arrangement
Standard Series: DA (two rows), DB (two rows of high density), DC/DD (three rows), etc., to meet different pin density requirements.
Miniaturized Models: DE (smallest two rows), Micro-D (special for aerospace), etc., suitable for compact spaces.
2) By Function and Performance
Communication Interface: such as RS-232 (DE-9), VGA (DB-15), and other standardized interfaces.
High-power Model: supports 75A current, adopts dual-contact or multi-contact layout (such as 5W5), used in electric vehicles and industrial power systems.
Combined Type: integrates signal, power, and RF interfaces to reduce the number of device I/O.
3. What are D-Sub Cables Used for?
Computers and Peripherals: VGA video cable, serial port (RS-232) communication, early game joystick interface.
Industrial Automation: Stable signal transmission between PLC, sensors, and control panels.
Communication Equipment: EMI-sensitive circuit connections for network equipment and test instruments.
High-Reliability Field: Defense, aerospace, and military equipment rely on its durability and environmental adaptability.
4. What are the Technical Advantages of D-Sub Cables?
Reliability: Metal housing and pin design ensure stability of long-distance transmission and reduce signal attenuation.
Flexibility: Supports straight/angle outlets, welding wire/crimping termination methods, and adapts to different installation scenarios.
Standardization Evolution: From early lathe processing terminals to stamping forming processes, costs are reduced, and penetration rates are increased.
5. Selection Recommendations for D-Sub Cables
Pin Requirements: Select the number and layout of contacts according to the signal type (digital/analog/power).
Environmental Adaptability: Metal housing or waterproof models are preferred to cope with harsh conditions.
Power Requirements: For high-current scenarios, special high-power contact configurations (such as the Amphenol ICC series) should be used.