D-Sub, D-Shaped Connectors

D-Sub, D-Shaped Connectors - Accessories

Part Number	Description / PDF	Quantity
1-2308265-8 TE Connectivity AMP Connectors	QL SET FOR VARIANT B 8	90
229968-1 TE Connectivity AMP Connectors	COVER DUST PLUG CHAMP PKG 50 POS	8779
15-000020 CONEC	CAP 15POS FOR FEMALE W/LANYARD	53
5747025-3 TE Connectivity AMP Connectors	CONN D-SUB GASKET RFI 15POS TIN	0
1-2308350-6 TE Connectivity AMP Connectors	CRIMP BARREL6	44
1-2308350-5 TE Connectivity AMP Connectors	CRIMP BARREL5	127
1-2308348-1 TE Connectivity AMP Connectors	CRIMP FLANGES LARGE	98
745245-5 TE Connectivity AMP Connectors	CONN LATCH BLOCK REAR DB50 POS	0
747275-1 TE Connectivity AMP Connectors	CONN D-SUB STRAIN RELIEF 37POS	0
3-747580-1 TE Connectivity AMP Connectors	CONN FERRULE STEPPED DB37/50	1572
35780 Tronex (Menda/EasyBraid/Tronex)	COVER D-SUB 15-M COND (1000PCS)	9
1201035001 Woodhead - Molex	DSUB CONN W/DIAGNOSTIC PORT STRT	18
09670029030 HARTING	U CLIP WITH A 4-40 UNC SCREW FOR	197
1-2308265-7 TE Connectivity AMP Connectors	QL SET FOR VARIANT B 7	100
09661080001 HARTING	DSUB IDC 9POLE PLAST CABLE CLAMP	0
35788 Tronex (Menda/EasyBraid/Tronex)	COVER D-SUB 9-M COND (1000PCS)	100013
1652114 Phoenix Contact	FILLER PLUG	33358
09670019985 HARTING	HEX EXTENDER KIT 4-40 UNC	1402
1-2308348-5 TE Connectivity AMP Connectors	CRIMP FLANGE 5 LARGE	73
SFP67SS25 NorComp	IP67 SEAL FLANGE 25POS SGL SIDED	648

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