D-Sub Cables

Image Part Number Description / PDF Quantity Rfq
MDM-37PHC29B

MDM-37PHC29B

VEAM

MICRO 37C P 10" WHT

0

MDM-21PH025L-A174

MDM-21PH025L-A174

VEAM

CABLE ASSY D TO WIRE 21P 254MM

0

MDB1-37SH003K

MDB1-37SH003K

VEAM

MICRO

0

MDM03-F37-12A174

MDM03-F37-12A174

VEAM

CABLE ASY D TO WIRE 37P 914.4MM

0

MDM-31SHY01F-A174

MDM-31SHY01F-A174

VEAM

MICRO

0

MDM-9PH020L

MDM-9PH020L

VEAM

MICRO 9 M 3" YEL JACKS LP

0

MDM03-G51-12

MDM03-G51-12

VEAM

CABLE ASY D TO WIRE 51P 914.4MM

0

MDM-21PH026B-A174

MDM-21PH026B-A174

VEAM

MICRO 21C P 8" YEL NI

0

MDM-25PHC42F

MDM-25PHC42F

VEAM

MICRO 25C P 120" WHT FLOAT

0

MDM-21PH058L-A174

MDM-21PH058L-A174

VEAM

MICRO 21C P 36" WHT JACKS NI

0

MDM-37PH038K-A174

MDM-37PH038K-A174

VEAM

MICRO 37C P 20" YEL JACKS NI

0

MDM-9PH002A-A30

MDM-9PH002A-A30

VEAM

MICRO

0

MDM-31SH004B-A174

MDM-31SH004B-A174

VEAM

CABLE ASY D TO WIRE 31P 609.6MM

0

MDM-31SH023M5

MDM-31SH023M5

VEAM

MICRO 31 F 20" RBW M5

0

MDM-37PH262M5-A174

MDM-37PH262M5-A174

VEAM

MICRO

0

MDM-25PH006L-A172

MDM-25PH006L-A172

VEAM

MICRO

0

MDB1-9PH001P

MDB1-9PH001P

VEAM

MICRO

0

MDM-31PH003M5

MDM-31PH003M5

VEAM

CANMDM-31PH003M5

0

MDM-37SH008P-A174

MDM-37SH008P-A174

VEAM

MICRO 37C S 12" WHT JACKP NI

0

MDM-21SH002F

MDM-21SH002F

VEAM

MICRO 21 F 12" RBW FLOAT

0

D-Sub Cables

1. Overview

D-Sub cables (D-Subminiature cables) are a family of multi-pin connectors characterized by their D-shaped metal shell and parallel pin arrangements. They were first introduced in 1952 by ITT Corporation and became a standard interface for serial and parallel communication in early computing and industrial systems. Despite the rise of modern interfaces like USB and HDMI, D-Sub cables remain critical in legacy systems, industrial automation, and specialized equipment due to their reliability and robust mechanical design.

2. Major Types and Functional Classification

TypePin CountKey FeaturesApplications
DE-99Compact size, low-cost signal transmissionRS-232 serial ports, gaming controllers
DB-1515High-density pin layoutVGA video interfaces, Macintosh serial ports
DB-2525Supports parallel data transferPrinter ports, industrial sensors
DC-3737High-pin-count for complex systemsTelecommunications, military equipment

3. Structure and Components

D-Sub cables consist of three primary elements: 1. D-Shaped Metal Shell: Provides EMI shielding and mechanical durability. 2. Pin Contacts: Typically made of phosphor bronze or beryllium copper with gold/silver plating for conductivity. 3. Dielectric Insulator: Prevents short circuits between pins, often using thermoplastic materials. Cable variants include standard 1:1 wiring and high-density designs with multiple contact rows.

4. Key Technical Specifications

ParameterTypical ValueSignificance
Impedance50 -100 Ensures signal integrity at high frequencies
Current Rating1A-5A per pinDetermines power delivery capability
Operating Temperature-40 C to +85 CDefines environmental tolerance
Shielding Effectiveness60dB-100dBReduces electromagnetic interference
Termination TypeSolder, crimp, or IDCInfluences durability and assembly method

5. Application Fields

  • Industrial automation (PLCs, CNC machines)
  • Legacy computer systems (serial/parallel ports)
  • Test and measurement equipment (oscilloscopes)
  • Aerospace (avionics data buses)
  • Medical devices (diagnostic imaging systems)

6. Leading Manufacturers and Products

ManufacturerKey Product SeriesSpecial Features
TE ConnectivityDELPHI D-Sub CablesHigh-vibration resistance for industrial use
AmphenolDura-Con HD D-SubHigh-density 4-row configuration
MolexPicoBlade D-SubMiniaturized design for compact devices
SamtecQTRADE D-SubQuick-mate alignment system

7. Selection Guidelines

Key considerations include: 1. Match pin count and gender to host interface requirements. 2. Evaluate environmental factors (temperature, vibration). 3. Choose appropriate shielding for EMI-sensitive environments. 4. Consider termination method based on maintenance needs. 5. Verify compliance with industry standards (EIA/TIA-232, MIL-STD-188). Example: Selecting DB-9 cables with ferrite cores for industrial motor control cabinets to reduce noise interference.

8. Industry Trends

While D-Sub cables face declining use in consumer electronics, they remain entrenched in industrial applications. Emerging trends include: 1. Hybrid D-Sub connectors integrating fiber optics alongside traditional pins. 2. Nanocoatings for corrosion resistance in harsh environments. 3. Increased adoption of high-density DA-15 interfaces in robotics. 4. RoHS-compliant materials replacing traditional tin-lead plating. The global D-Sub market is projected to maintain a 1.2% CAGR through 2030, primarily driven by industrial IoT deployments.

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