D-Sub, D-Shaped Connectors

D-Sub, D-Shaped Connectors - Accessories

Part Number	Description / PDF	Quantity
726181001 Würth Elektronik Midcom	DUST COVER 9POS D-SUB FEMALE	0
61030000067 HARTING	CRIMP FLNG - HOOD 9-37P 60-70MM	52
1-2308348-6 TE Connectivity AMP Connectors	CRIMP FLANGE 6 LARGE	94
747080-2 TE Connectivity AMP Connectors	CONN LATCH BLOCK REAR DB9-37 2PC	287
AB973 ASSMANN WSW Components	JUMPER BOX DB25 MALE/DB25 MALE	0
1689750 Phoenix Contact	DSUB PANEL MOUNT FRAME 25POS	63
165X16809X CONEC	50POS SCREEN CAP C/W SCREWS	3
1731120638 Woodhead - Molex	FCT CRIMPING FLANGE	200
09662080001 HARTING	DSUB IDC 15POLE PLAST CBL CLAMP	123
4-745130-0 TE Connectivity AMP Connectors	CONN FERRULE CRIMP DB9,15,50	0
09670009917 HARTING	DSUB SLIDE LOCKING DEVICE 37P	0
160-015-003R031 NorComp	SLIDELOCK FOR DSUB 15POS	40
5745584-1 TE Connectivity AMP Connectors	CONN D-SUB LATCH SLIDE 25POS	259
025-9524-000 VEAM	DUST CAP FOR MDM-9P ANTISTATIC	1064
745530-3 TE Connectivity AMP Connectors	CONN BACK COVER SLIDE ON DB25	592
2-2308265-0 TE Connectivity AMP Connectors	QL SET FOR VARIANT B 10	116
025-9536-004 VEAM	DUST CAP FOR MDM-51P CONDUCTIVE	496
RA-LT0024-105 Russtech Engineering	SLIDE LATCH, DSUB, SZ5	33
DE512241 VEAM	DSUB SLIDING LOCK RETAIN SIZE9	0
160X10419X CONEC	DUST COVER FOR MALE DSUB	92

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