D-Sub, D-Shaped Connectors - Accessories

Image Part Number Description / PDF Quantity Rfq
1731121269

1731121269

Woodhead - Molex

FCT DUST CAP

0

1731121301

1731121301

Woodhead - Molex

FCT ACCESSORY

0

1731121358

1731121358

Woodhead - Molex

FCT ACCESSORY

0

1731120955

1731120955

Woodhead - Molex

FCT DUST CAP

0

1731121304

1731121304

Woodhead - Molex

FCT ACCESSORY

0

1731120535

1731120535

Woodhead - Molex

GUIDE PIN REAR BODY

0

1731120979

1731120979

Woodhead - Molex

FCT RF CLAD FOAM GASKET S5

0

1731121299

1731121299

Woodhead - Molex

FCT ACCESSORY

0

1731120590

1731120590

Woodhead - Molex

FCT CRIMPING FLANGE

200

1731121346

1731121346

Woodhead - Molex

FCT ACCESSORY

0

1731121365

1731121365

Woodhead - Molex

FCT ACCESSORY

0

1731120639

1731120639

Woodhead - Molex

FCT CRIMPING FLANGE

0

1731121124

1731121124

Woodhead - Molex

FCT GUIDE PIN

0

1731121716

1731121716

Woodhead - Molex

FCT PACKAGING

0

1731121371

1731121371

Woodhead - Molex

FCT ACCESSORY

0

1731121715

1731121715

Woodhead - Molex

FCT PACKAGING

0

1731120973

1731120973

Woodhead - Molex

FCT BRACKET SET

0

0681540021

0681540021

Woodhead - Molex

OBD2 DUMMY PLUG ASSY

0

1731120360

1731120360

Woodhead - Molex

D-SUB PLASTIC DUST CAPS

0

1731120598

1731120598

Woodhead - Molex

FCT RF CLAD FOAM GASKET S4

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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