D-Sub, D-Shaped Connectors

D-Sub, D-Shaped Connectors - Accessories

Part Number	Description / PDF	Quantity
CNT-PROFI ICP DAS USA Inc.	PROFI CONNECTOR	30
025-9537-003 VEAM	MICRO D/C MDM-51S CONDUCT BLK	410
DE-59-20 Vitelec / Cinch Connectivity Solutions	CONN DSUB9 SOCKET DUST CAP	228
09D-210-BD Leader Tech Inc.	COPPER BERYLLIUM D-SUB SLOTTED G	40
1-2308348-4 TE Connectivity AMP Connectors	CRIMP FLANGE 4 LARGE	95
1731120229 Woodhead - Molex	FCT THREADED INSERT 4-40UNC	0
86553113TLF Storage & Server IO (Amphenol ICC)	CONN DSUB 9POS PIN METAL CAP	398
745508-5 TE Connectivity AMP Connectors	CONN FERRULE SPLIT-RING DB25/37	450
86553148TLF Storage & Server IO (Amphenol ICC)	CONN DSUB 9POS SOCKET METAL CAP	1814
DH-27-CMB(7.3) Hirose	CABLE CLAMP FOR 7.3MM CABLE	0
1-552296-1 TE Connectivity AMP Connectors	STRAIN RELIEF 64 POS BLACK	0
025-9525-000 VEAM	DUST CAP FOR MDM-9S ANTISTATIC	2312
35787 Tronex (Menda/EasyBraid/Tronex)	COVER D-SUB 50-F COND (1000PCS)	12
SF25 NorComp	SEALING FLANGE 25POS SILICON	0
1-552496-1 TE Connectivity AMP Connectors	90 DEG COVER KIT-64 POS BLK	315
DA53750-1 VEAM	DSUB DA INTERFACIAL SEAL	424
1731120100 Woodhead - Molex	FCT DUST CAP S3 PLSTC RCPT ANTI	200
3448-61 3M	METAL STRAIN RELIEF 24 POS	625
DA512201 VEAM	DSUB SLIDING LOCK RETAIN SIZE15	1624
DA-59-20BA VEAM	DSUB 15POS SOCKET DUST CAP	1611

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

Type	Key Features	Application Examples
DB-9 (DE-9)	9 contacts, compact size	RS-232 serial communication, PC COM ports
DB-15 (HD-15)	15 contacts, high-density	VGA video interfaces, industrial sensors
DB-25	25 contacts, parallel signaling	Older printer ports, industrial control systems
DB-37	37 contacts, rugged design	Industrial 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

Parameter	Typical Range	Significance
Current Rating	1-10A per contact	Determines power transmission capability
Voltage Rating	50-600V	Ensures dielectric insulation safety
Contact Resistance	5-20m	Impacts signal integrity
Insulation Resistance	1000M min	Prevents leakage currents
Operating Temp	-55 C to +125 C	Defines 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

Manufacturer	Key Products	Specialization
TE Connectivity	DEUTSCH D-Sub series	Military/aerospace grade connectors
Amphenol	97-Series D-Subs	High-density industrial connectors
Molex	DuraCon D-Sub	Commercial/industrial applications
ITT Cannon	Delta-D-Sub	Harsh 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