D-Sub, D-Shaped Connectors - Accessories

Image Part Number Description / PDF Quantity Rfq
1731120564

1731120564

Woodhead - Molex

FCT DUST CAP S1 PLSTC PLG ANTI/H

200

1727040092

1727040092

Woodhead - Molex

FCT DUST CAP S5 PLSTC RCPT

200

1731120638

1731120638

Woodhead - Molex

FCT CRIMPING FLANGE

200

1727040125

1727040125

Woodhead - Molex

FCT SLIDE LOCK S3

190

1731120068

1731120068

Woodhead - Molex

FCT RUBBER BUSHING SIZE 1-2

46

1727040126

1727040126

Woodhead - Molex

FCT SLIDE LOCK S4

162

1727040124

1727040124

Woodhead - Molex

FCT SLIDE LOCK S2

189

1731120438

1731120438

Woodhead - Molex

FCT DUST CAP S4 PLSTC RCPT ANTI

200

0511171605

0511171605

Woodhead - Molex

CONN RETAINER FOR 16POS HOUSING

12290

1731120114

1731120114

Woodhead - Molex

FCT DUST CAP S2 SHLD PLSTC PLG

200

1731121110

1731121110

Woodhead - Molex

FCT MTL BRACKET

480

1731120056

1731120056

Woodhead - Molex

FCT LATCH SPRING

300

1731120110

1731120110

Woodhead - Molex

FCT DUST CAP S3 PLSTC RCPT W/CHA

200

1731120229

1731120229

Woodhead - Molex

FCT THREADED INSERT 4-40UNC

0

1731120100

1731120100

Woodhead - Molex

FCT DUST CAP S3 PLSTC RCPT ANTI

200

1727040088

1727040088

Woodhead - Molex

FCT DUST CAP S3 PLSTC RCPT

35

1731120457

1731120457

Woodhead - Molex

D-SUB SLIDE LOCKS

200

1731120057

1731120057

Woodhead - Molex

FCT LATCH LOCK

1900

1731121658

1731121658

Woodhead - Molex

FCT HOOD

500

1731120066

1731120066

Woodhead - Molex

FCT LOCKING HOOD

2630

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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