D-Sub, D-Shaped Connectors - Accessories

Image Part Number Description / PDF Quantity Rfq
1727040091

1727040091

Woodhead - Molex

FCT DUST CAP S5 PLSTC PLG

200

1731120442

1731120442

Woodhead - Molex

FCT COVER PLATE S3

200

1731121326

1731121326

Woodhead - Molex

FCT ACCESSORY

0

1731120643

1731120643

Woodhead - Molex

FCT RUBBER BUSHING SIZE 1-2

500

1727040083

1727040083

Woodhead - Molex

FCT DUST CAP S1 PLSTC PLG

108

1731120230

1731120230

Woodhead - Molex

FCT COVER PLATE S1

187

0685030101

0685030101

Woodhead - Molex

OBD WIRE DRESS COVER

345

1731120113

1731120113

Woodhead - Molex

FCT DUST CAP S1 SHLD PLSTC PLG

200

1731120070

1731120070

Woodhead - Molex

FCT RUBBER BUSHING SIZE 5

0

1731120060

1731120060

Woodhead - Molex

FCT DUST CAP S1 MTL PLG

136

1731120436

1731120436

Woodhead - Molex

FCT DUST CAP S3 PLSTC PLG ANTI

200

1731120297

1731120297

Woodhead - Molex

FCT RF CLAD FOAM GASKET S1

185

1731120071

1731120071

Woodhead - Molex

FCT STANDOFF NUT 4-40 UNC 6.3

42

1731120338

1731120338

Woodhead - Molex

FCT SEALING PLUGS BLACK

500

1727040084

1727040084

Woodhead - Molex

FCT DUST CAP S1 PLSTC RCPT

2056

1731120107

1731120107

Woodhead - Molex

FCT DUST CAP S5 PLSTC PLG W/CHAI

200

1731120368

1731120368

Woodhead - Molex

FCT COVER PLATE S2

500

1731120104

1731120104

Woodhead - Molex

FCT DUST CAP S2 PLSTC PLG W/CHAI

200

1727040089

1727040089

Woodhead - Molex

FCT DUST CAP S4 PLSTC PLG

139

1201030001

1201030001

Woodhead - Molex

CONN D-SUB 9PIN R/A W/DIAGNOSTIC

3

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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