D-Sub, D-Shaped Connectors

D-Sub, D-Shaped Connectors - Accessories

Part Number	Description / PDF	Quantity
165X16769X CONEC	CONN CAP DB9 PLUG W/FLANGE	3407
15-000120 CONEC	CAP 15POS FOR PLUG W/LANYARD	435
3448-62 3M	METAL STRAIN RELIEF 36 POS	100
1731120440 Woodhead - Molex	FCT FRONT SEAL S1	100
4S-15 CnC Tech	STRAIN RELIEF, D-SUB IDC 15POS P	294
165X16789X CONEC	CONN CAP DB25 PLUG W/FLANGE	119
1731120063 Woodhead - Molex	FCT DUST CAP S1 MTL RCPT	179100
745530-1 TE Connectivity AMP Connectors	CONN BACK COVER SLIDE ON DB9	660
61030000071 HARTING	CRIMP FLNG - HOOD 9-37P 80-90MM	7
16-000290 CONEC	CAP 15POS STD FOR FMAL W/LANYARD	0
745550-1 TE Connectivity AMP Connectors	CONN CABLE CLAMP COVER 90DEG DB9	236
RA-LT0024-101 Russtech Engineering	SLIDE LATCH, DSUB, SZ1	10928
0511181605 Woodhead - Molex	CONN RETAINER FOR 16POS HOUSING	4386
3412-10250 3M	CONN DUST COVER MDR 50POS	387
09670029060 HARTING	D SUB IP 67 SHIELDED CAP_FE_9P	64
1-2308265-3 TE Connectivity AMP Connectors	QL SET FOR VARIANT B 3	84
DSR-37 Adam Tech	D-SUB IDC 37 WAY STRAIN RELIEF	800
70524BLF Storage & Server IO (Amphenol ICC)	DUST CAP STD FOR 15POS F	0
5745584-3 TE Connectivity AMP Connectors	CONN D-SUB LATCH SLIDE 25POS	215
3-552414-1 TE Connectivity AMP Connectors	90 DEG COVER KIT 36 POS 2 PC PT	422

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