D-Sub, D-Shaped Connectors - Accessories

Image Part Number Description / PDF Quantity Rfq
554725-5

554725-5

TE Connectivity AMP Connectors

CONN CHAMP INNER FERRULE .450

48

16-000400

16-000400

CONEC

CAP 25POS STD FOR PLUG W/LANYARD

0

799-102080

799-102080

CONEC

9 POS D-SUB PLATE+SPRING LATCH

298

340103217B

340103217B

C&K

INTERFACIAL SEAL

50

09D-110-BD

09D-110-BD

Leader Tech Inc.

COPPER BERYLLIUM D-SUB SOLID GAS

15

DD21961

DD21961

VEAM

DSUB DD F GUIDE PIN PLATE ZINC

282

09670029002

09670029002

HARTING

D SUB IP 67_15 POLE FRONT SEAL

18

229969-1

229969-1

TE Connectivity AMP Connectors

COVER DUST RCPT CHAMP PKG 50 POS

489

L17D4K63116

L17D4K63116

Storage & Server IO (Amphenol ICC)

D-SUB 15POS FEMALE DUST COVER

180

DC22070

DC22070

VEAM

DSUB GUIDE PIN PLATE MALE

100

1-2308348-8

1-2308348-8

TE Connectivity AMP Connectors

CRIMP FLANGE 8 LARGE

99

3505-62

3505-62

3M

LATCH BRACKET-DSUB JUNCTION SHLL

84

745508-9

745508-9

TE Connectivity AMP Connectors

CONN FERRULE SPLT RNG DB25/50

0

DF02HCLP01A

DF02HCLP01A

JAE Electronics

CLAMP PLATE CABLE DIA 7.5-8.0

0

745508-7

745508-7

TE Connectivity AMP Connectors

FERRULE SPLIT-RING 11.94MM

0

D110277

D110277

VEAM

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

5079

61030000142

61030000142

HARTING

INDUCOM CRIMP FERRULE 12,0 - 13,

100

160-000-006R032

160-000-006R032

NorComp

NUT COUPLING 4-40 FEMALE NICKEL

3029

260125

260125

Würth Elektronik Midcom

D-SUB RF-SEALED COVER FOR 25 POL

50

DH-37-CMB(8.8)

DH-37-CMB(8.8)

Hirose

CABLE CLAMP FOR 8.8MM CABLE

25

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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