D-Sub, D-Shaped Connectors - Accessories

Image Part Number Description / PDF Quantity Rfq
025-9526-000

025-9526-000

VEAM

DUST CAP FOR MDM-15P ANTISTATIC

1717

RA-LT0024-201

RA-LT0024-201

Russtech Engineering

SLIDE LATCH, RCVR, DSUB, SZ1

12738

1731120062

1731120062

Woodhead - Molex

FCT DUST CAP S3 MTL PLG

0

QLOCKPOST-2

QLOCKPOST-2

NorComp

QUICK LOCK .039-.051" M3 KIT

93

1-208101-1

1-208101-1

TE Connectivity AMP Connectors

CONN LATCHBLOCK FRONT DB50

0

15-000050

15-000050

CONEC

CAP 50POS FOR FEMALE W/LANYARD

0

7-745129-2

7-745129-2

TE Connectivity AMP Connectors

CONN FERRULE INNER CRIMP DB15-37

0

15-000010

15-000010

CONEC

CAP 9POS FOR FEMALE W/LANYARD

0

09670370611

09670370611

HARTING

DSUB DUPC CAP MA 37P BLACK

9

1731120257

1731120257

Woodhead - Molex

FCT DUST CAP S1 PLSTC RCPT ANTI

200

260109

260109

Würth Elektronik Midcom

D-SUB RF-SEALED COVER FOR 9 POL.

48

160-000-115R002

160-000-115R002

NorComp

DUST CAP 15POS MALE W/LANYARD

52

16-002200E

16-002200E

CONEC

LOCKING KIT HOOD TO HOOD

175

RDBD-MEKURAPIN

RDBD-MEKURAPIN

Hirose

CONN CONTACT PIN

2

165X17509X

165X17509X

CONEC

9P PLASTIC COVER WTR RES HOOD

119

16-000280

16-000280

CONEC

CAP 9POS STD FOR FMALE W/LANYARD

742

DF02HCLP12B

DF02HCLP12B

JAE Electronics

CLAMP PLATE CABLE DIA 7.5-8.0

0

L17D4J37901

L17D4J37901

Storage & Server IO (Amphenol ICC)

D SUB ACCESSORY

0

D20418-14

D20418-14

VEAM

DSUB FEMALE SCREW LOCK S/S

341

165X13159X

165X13159X

CONEC

CONN BACKSHELL 37POS M

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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