D-Sub, D-Shaped Connectors - Accessories

Image Part Number Description / PDF Quantity Rfq
1731120579

1731120579

Woodhead - Molex

D-SUB PLASTIC DUST CAPS

0

1731120425

1731120425

Woodhead - Molex

FCT FRONT BODY D-SUB RCPT 6 SLOT

0

1731120116

1731120116

Woodhead - Molex

FCT DUST CAP S4 SHLD PLSTC PLG

0

1731120382

1731120382

Woodhead - Molex

FCT SLIDE LOCK S3 M3

0

1731120960

1731120960

Woodhead - Molex

FCT DUST CAP

0

1731121128

1731121128

Woodhead - Molex

FCT STRAIN RELIEF CLAMP

0

1731120653

1731120653

Woodhead - Molex

FCT STANDOFF NUT 4-40 6.3 TIN PL

0

1731120362

1731120362

Woodhead - Molex

D-SUB PLASTIC DUST CAPS

0

1731121696

1731121696

Woodhead - Molex

FCT ACCESSORY

0

1201000003

1201000003

Woodhead - Molex

CONN D-SUB 9POS WITH PROG PORT

0

1731121356

1731121356

Woodhead - Molex

FCT ACCESSORY

0

1731121350

1731121350

Woodhead - Molex

FCT ACCESSORY

0

1731120944

1731120944

Woodhead - Molex

FCT DUST CAP

0

1731121123

1731121123

Woodhead - Molex

FCT GUINDING SLEEVE

0

1731120945

1731120945

Woodhead - Molex

FCT DUST CAP

0

1731121706

1731121706

Woodhead - Molex

FCT CONTACT STR RCPT PCB

0

1731121352

1731121352

Woodhead - Molex

FCT ACCESSORY

0

1731121100

1731121100

Woodhead - Molex

D-SUB PLASTIC DUST CAPS

0

1731121718

1731121718

Woodhead - Molex

FCT CONNECTOR HOUSING

0

1731120306

1731120306

Woodhead - Molex

FCT DUST CAP S1 PLSTC PLG ANTI

200

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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