D-Sub, D-Shaped Connectors - Accessories

Image Part Number Description / PDF Quantity Rfq
1688049

1688049

Phoenix Contact

DSUB SHROUD

2

1689763

1689763

Phoenix Contact

DSUB EMC SHROUD SHELL SIZE 3

0

1688447

1688447

Phoenix Contact

DSUB CAP NUT W/SEAL

71821

1652211

1652211

Phoenix Contact

25POS DSUB PROTECTIVE COVER

14

1688366

1688366

Phoenix Contact

DSUB PANEL MOUNTING FRAME

24

1688036

1688036

Phoenix Contact

15POS DSUB PANEL MOUNT FRAME

191

1688117

1688117

Phoenix Contact

DSUB CAP NUT W/SEAL

472

1652114

1652114

Phoenix Contact

FILLER PLUG

33358

1887086

1887086

Phoenix Contact

CONN PROTECTIVE COVER DB-9POS

7

1887099

1887099

Phoenix Contact

CONN PROTECTIVE COVER DB-15POS

5893

1688104

1688104

Phoenix Contact

DSUB CAP NUT WITH LINE SEAL FOR

56

1652127

1652127

Phoenix Contact

DSUB CAP NUT W/SEAL

0

1689802

1689802

Phoenix Contact

DSUB SLEEVE

0

1689750

1689750

Phoenix Contact

DSUB PANEL MOUNT FRAME 25POS

63

1688065

1688065

Phoenix Contact

DSUB INNER SLEEVE SHELL SIZE 2

0

1688476

1688476

Phoenix Contact

DSUB EMC INNER SLEEVE 9POS

0

1688463

1688463

Phoenix Contact

DSUB SHROUD

0

1688450

1688450

Phoenix Contact

DSUB CAP NUT W/SEAL

43

1416813

1416813

Phoenix Contact

COVER PROTECTIVE IP67

0

1654840

1654840

Phoenix Contact

PANEL MOUNT FRAME DSUB

0

D-Sub, D-Shaped Connectors - Accessories

1. Overview

D-Subminiature (D-Sub) connectors are a family of electrical connectors characterized by a D-shaped metal shielding shell and multiple parallel contacts. They provide reliable signal and power transmission in demanding environments. These connectors remain critical in industrial automation, telecommunications, and legacy computer systems despite emerging alternatives. Their mechanical robustness and customizable configurations ensure continued relevance in specialized applications.

2. Main Types and Functional Classification

TypeKey FeaturesApplication Examples
DB-9 (DE-9)9 contacts, compact sizeRS-232 serial communication, PC COM ports
DB-15 (HD-15)15 contacts, high-densityVGA video interfaces, industrial sensors
DB-2525 contacts, parallel signalingOlder printer ports, industrial control systems
DB-3737 contacts, rugged designIndustrial instrumentation, military equipment

3. Structure and Components

Standard D-Sub connectors consist of: - Metal shell: Zinc or aluminum alloy housing with EMI shielding - Insulator: High-temperature thermoplastic (e.g., LCP, PBT) - Contacts: Phosphor bronze or beryllium copper with gold/tin plating - Mounting hardware: Threaded nuts or panel-mount flanges Variants include solder cup, PCB mount, and crimp termination options with optional environmental seals.

4. Key Technical Specifications

ParameterTypical RangeSignificance
Current Rating1-10A per contactDetermines power transmission capability
Voltage Rating50-600VEnsures dielectric insulation safety
Contact Resistance5-20m Impacts signal integrity
Insulation Resistance1000M minPrevents leakage currents
Operating Temp-55 C to +125 CDefines environmental tolerance

5. Application Fields

  • Computer Systems: Legacy serial/parallel ports, KVM switches
  • Industrial Automation: PLC interfaces, sensor/actuator connections
  • Telecommunications: Router/console ports, test equipment
  • Medical Devices: Diagnostic equipment data interfaces
  • Aerospace: Avionics control systems, ground support equipment

6. Leading Manufacturers and Products

ManufacturerKey ProductsSpecialization
TE ConnectivityDEUTSCH D-Sub seriesMilitary/aerospace grade connectors
Amphenol97-Series D-SubsHigh-density industrial connectors
MolexDuraCon D-SubCommercial/industrial applications
ITT CannonDelta-D-SubHarsh environment solutions

7. Selection Guidelines

Key selection factors: - Signal/power requirements (contact count, current/voltage needs) - Environmental conditions (temperature, vibration, moisture) - Mechanical constraints (panel space, mating cycles) - Shielding requirements (EMI/RFI protection level) - Termination method (solder, crimp, PCB mount) - Compliance standards (MIL-STD, RoHS, REACH) Example: Selecting DB-9 with gold contacts and IP67 rating for outdoor industrial control cabinets.

8. Industry Trends

Emerging trends include: - Miniaturization (e.g., micro D-Sub at 2.5mm pitch) - High-speed variants supporting USB 3.0+ signaling - Integration with fiber optic/hybrid contact designs - Adoption of lead-free plating processes - Modular designs enabling hot-swap functionality - Increased use in IoT edge devices for legacy system compatibility

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