D-Sub, D-Shaped Connectors - Accessories

Image Part Number Description / PDF Quantity Rfq
D20420-136

D20420-136

VEAM

DSUB DD MALE S/L S/S

0

DAS-60-20

DAS-60-20

VEAM

DSUB DUSTCAP DA PIN

0

D110277-7

D110277-7

VEAM

DSUB LATCH SPRING

0

320-0132-000

320-0132-000

VEAM

DSUB DB SLIDE LATCH KIT

0

320-0130-001

320-0130-001

VEAM

D-SUB LOCK LEVER REAR PANEL MT

0

075-5091-000

075-5091-000

VEAM

DSUB GASKET DEHD 9 PIN

0

271-0473-000

271-0473-000

VEAM

DSUB PACKAGING TUBE E-C

0

GDA111636-33

GDA111636-33

VEAM

DSUB GROMMET

0

271-0473-001

271-0473-001

VEAM

DSUB PACKAGING TUBE D

0

250-0039-021

250-0039-021

VEAM

SCREW D LOCKING STEEL 5/16

0

D130322-1

D130322-1

VEAM

DSUB CRIMP PLUG 75 OHM 30U

0

025-9506-000

025-9506-000

VEAM

MICRO DUST CAP MD 37P/S

0

DA20961-23

DA20961-23

VEAM

DSUB DA ROUND CABLE CLAMP NICK

0

217-0733-232

217-0733-232

VEAM

BFR 32 HEX NUT ZINC

0

217-0607-016

217-0607-016

VEAM

BFR 16S 16 HEX NUT

0

057-0553-007

057-0553-007

VEAM

M83723-35N-18R8223

0

D110277-8

D110277-8

VEAM

DSUB LATCH SPRING

0

990-0000-837

990-0000-837

VEAM

DSUB HEX NUTS

0

D20418-123

D20418-123

VEAM

DSUB FEMALE SCREW LOCK ROHS

0

DC24660-16

DC24660-16

VEAM

DSUB DC DEEP STRT B/S 50U G

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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