D-Sub, D-Shaped Connectors - Accessories

Image Part Number Description / PDF Quantity Rfq
745538-5

745538-5

TE Connectivity AMP Connectors

CONN CASSETTE 33POS RCPT KIT 4PC

0

553441-1

553441-1

TE Connectivity AMP Connectors

RETAINER, RECPT, ACTION PIN

0

554254-1

554254-1

TE Connectivity AMP Connectors

CONN CHAMP INSIDE SHIELD 36POS

0

177801-1

177801-1

TE Connectivity AMP Connectors

CONN CHAMP DUST COVER 64POS

0

554328-1

554328-1

TE Connectivity AMP Connectors

INSIDE SHLD, EMI, PLUG, 50 POS

0

553588-2

553588-2

TE Connectivity AMP Connectors

COVER, .050/.085, CHAMP

0

749900-2

749900-2

TE Connectivity AMP Connectors

CONN LATCH BLOCK .050 SERIES

0

749108-2

749108-2

TE Connectivity AMP Connectors

CONN TERM COVER 28POS .050

0

747024-3

747024-3

TE Connectivity AMP Connectors

CONN D-SUB GASKET RFI 9POS TIN

0

745583-5

745583-5

TE Connectivity AMP Connectors

SLIDE LATCH WITH SCREWS/WASHERS

0

553588-3

553588-3

TE Connectivity AMP Connectors

COVER, .050/.085, CHAMP

0

569749-1

569749-1

TE Connectivity AMP Connectors

DOWEL PIN, B/B CHAMP

0

569334-1

569334-1

TE Connectivity AMP Connectors

COVER,DUST,PLUG, 50 POSN,CHAMP

0

783539-1

783539-1

TE Connectivity AMP Connectors

ANVIL CONBINATION

0

554266-8

554266-8

TE Connectivity AMP Connectors

CONN CHAMP INNER FERRULE .5 DIA

0

228610-2

228610-2

TE Connectivity AMP Connectors

END CAP, AMPLIMITE

0

553442-3

553442-3

TE Connectivity AMP Connectors

RETAINER, PLUG, ACTION PIN

0

164890-1

164890-1

TE Connectivity AMP Connectors

SLIDE LATCH

0

747025-3

747025-3

TE Connectivity AMP Connectors

CONN D-SUB GASKET RFI 15POS TIN

0

745007-1

745007-1

TE Connectivity AMP Connectors

RS449 LATCH BLOCK KIT

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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