D-Sub, D-Shaped Connectors - Accessories

Image Part Number Description / PDF Quantity Rfq
D110278-1

D110278-1

VEAM

DSUB SPRING LATCH PLATE

0

GDA111636-32

GDA111636-32

VEAM

DSUB GROMMET

0

D53018-17

D53018-17

VEAM

DSUB SLIDE LOCK POST ZINC

0

DC20963-17

DC20963-17

VEAM

D-SUB DC ROUND CABLE CLAMP NM

0

DD20964-27

DD20964-27

VEAM

DSUB DD

0

980-2000-871

980-2000-871

VEAM

DSUB STOPPERS

0

015-9516-001

015-9516-001

VEAM

MICRO BRACKET 90DEG MDB1-51

0

DD44549

DD44549

VEAM

DSUB DD

0

D20420-49

D20420-49

VEAM

DSUB SCW LOCK MALE

0

DMA51235-1

DMA51235-1

VEAM

DSUB D*MA PIN HOLE FILLER

0

057-0500-007

057-0500-007

VEAM

M83723-35N-20R

0

D20419-12

D20419-12

VEAM

SAME AS D20419 ONLY BRASS NM

0

057-0447-025

057-0447-025

VEAM

M83723-35S-18R W/B

0

DA-60-20PG

DA-60-20PG

VEAM

DSUB DUSTCAP DA PIN

0

025-9525-002

025-9525-002

VEAM

DUST CAP MDM-9S *SPEC

0

D20419-23

D20419-23

VEAM

DSUB MALE SCREWLOCK SS

0

025-1227-000

025-1227-000

VEAM

DSUB DUST CAP

0

980-2000-441

980-2000-441

VEAM

DC-59-20BA SKT BLACK ANTIS D/C

14783

DCS-59-20

DCS-59-20

VEAM

DSUB DC SKT DUST CAP BLK

0

DD120190-529

DD120190-529

VEAM

DSUB DD

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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