D-Sub, D-Shaped Connectors - Accessories

Image Part Number Description / PDF Quantity Rfq
1731121630

1731121630

Woodhead - Molex

FCT HOOD

0

1731120705

1731120705

Woodhead - Molex

FCT DUST CAP S3 PLSTC PLG ANTI/H

0

1731120953

1731120953

Woodhead - Molex

FCT DUST CAP

0

1731121021

1731121021

Woodhead - Molex

FCT CABLE REDUCTION FMK2-3

0

1731120966

1731120966

Woodhead - Molex

FCT LOCKPLATE

0

1731121378

1731121378

Woodhead - Molex

FCT ACCESSORY

0

1731120958

1731120958

Woodhead - Molex

FCT DUST CAP

0

1731120968

1731120968

Woodhead - Molex

FCT BRACKET MTL TIN PLATED

0

1731120383

1731120383

Woodhead - Molex

FCT PLASTIC BRACKET SET

0

1731120124

1731120124

Woodhead - Molex

FCT DUST CAP S2 SHLD PLSTC PLG W

0

1731120443

1731120443

Woodhead - Molex

FCT COVER PLATE S5

0

1731121268

1731121268

Woodhead - Molex

FCT DUST CAP SIZE1 MTL RCPT W/CH

0

1731120001

1731120001

Woodhead - Molex

FCT SLIDE LOCK FRAME SIZE1

0

1731121143

1731121143

Woodhead - Molex

FCT DUST CAP S4 PLSTC PLG ANTI

0

1731120272

1731120272

Woodhead - Molex

FCT STABILIZING RING PVC

0

1731120352

1731120352

Woodhead - Molex

FCT LATCH LOCK 4-40UNC 12.7 ZINC

0

1731120985

1731120985

Woodhead - Molex

FCT SLIDE LOCK S5 HOOD

0

1731121367

1731121367

Woodhead - Molex

FCT STABILIZING RING ULTEM

0

1731121711

1731121711

Woodhead - Molex

FCT INSULATOR

0

1731121026

1731121026

Woodhead - Molex

FCT SLIDE LOCK SIZE1 M3

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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