D-Sub, D-Shaped Connectors - Accessories

Image Part Number Description / PDF Quantity Rfq
DE111919

DE111919

VEAM

MALE GUIDE PIN PLATE FOR DB9

151

DD-60-20BA

DD-60-20BA

VEAM

DSUB DUSTCAP DD PIN BLK

1564

DD21961

DD21961

VEAM

DSUB DD F GUIDE PIN PLATE ZINC

282

DC22070

DC22070

VEAM

DSUB GUIDE PIN PLATE MALE

100

D110277

D110277

VEAM

SPRNG LATCH ASSY DE,DA,DB,DC/5PC

5079

025-9524-003

025-9524-003

VEAM

DUST CAP FOR MDM-9P CONDUCTIVE

0

025-9527-000

025-9527-000

VEAM

DUST CAP FOR MDM-15S ANTISTATIC

2081

DB22254

DB22254

VEAM

DSUB DB FEMALE GUIDE PIN PLATE

1125

DB-60-20BA

DB-60-20BA

VEAM

DSUB 25POS PIN DUST CAP

2096

DD537504

DD537504

VEAM

INTERFACIAL SEAL FOR DB50

100

DC-59-20BA

DC-59-20BA

VEAM

DSUB DC SKT DUST CAP BLK

14783

025-9533-003

025-9533-003

VEAM

MICRO D/C MDM-31S CONDUCT BLK

1345

025-9531-000

025-9531-000

VEAM

DUST CAP FOR MDM-25S ANTISTATIC

1965

DC20963

DC20963

VEAM

CONN BACKSHELL DB37 METAL ROUND

424

025-9529-000

025-9529-000

VEAM

MDM 21 SKT D/C

4884

025-9525-003

025-9525-003

VEAM

DUST CAP FOR MDM-9S CONDUCTIVE

381

025-9532-003

025-9532-003

VEAM

DUST CAP FOR MDM-31P CONDUCTIVE

0

025-9527-003

025-9527-003

VEAM

DUST CAP FOR MDM-15S CONDUCTIVE

0

DB22255

DB22255

VEAM

DSUB DB MALE GUIDE PIN PLATE

194

025-9526-003

025-9526-003

VEAM

DUST CAP FOR MDM-15P CONDUCTIVE

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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