D-Sub, D-Shaped Connectors - Accessories

Image Part Number Description / PDF Quantity Rfq
D110238-1025

D110238-1025

VEAM

DSUB REELED CONTACT 10K/REEL

0

DC19678-12

DC19678-12

VEAM

DSUB DC METAL POTTING SHELL

0

GDA111636-23

GDA111636-23

VEAM

DSUB GROMMET

0

217-0607-010

217-0607-010

VEAM

BFR 10SL HEX NUT

0

D20420-158

D20420-158

VEAM

DSUB MALE SCREW LOCK ROHS

0

015-0351-000

015-0351-000

VEAM

DSUB DC PLASTIC BRACKET D*U

0

227-1306-000

227-1306-000

VEAM

DSUB LATCH PLATE

0

217-0725-200

217-0725-200

VEAM

BFR 14S HEX NUT A206

0

217-0729-200

217-0729-200

VEAM

BFR 20 J/N A206

0

DB19678-11

DB19678-11

VEAM

DSUB DB METAL POTTING SHELL

0

217-0607-012

217-0607-012

VEAM

BFR 12S HEX NUT

0

015-9516-002

015-9516-002

VEAM

MICRO 9-37 BRKT MTG 90DEG

0

217-0607-036

217-0607-036

VEAM

BFR 36 HEX NUT

0

DB20962-18

DB20962-18

VEAM

DSUB DB ROUND C/C BRASS 50U

0

DE44550

DE44550

VEAM

DSUB DE

0

D20418-127

D20418-127

VEAM

DSUB SCREW LOCK NMB

0

015-0340-007

015-0340-007

VEAM

DSUB DB PLASTIC BRACKET R/A

0

DD115386-9

DD115386-9

VEAM

DSUB DD

0

GDA111635-37

GDA111635-37

VEAM

DSUB GROMMET

0

DAS-59-20

DAS-59-20

VEAM

DSUB DUSTCAP DA SKT

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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