D-Sub Cables

Image	Part Number	Description / PDF	Quantity	Rfq
	P710-006 Tripp Lite	CABLE ASSY DB25 SHLD BLACK 1.83M	0
	P781-016 Tripp Lite	CABLE ASSY HD15 SHLD BLACK 4.88M	0
	P500-100-P Tripp Lite	CABLE ASSY HD15 SHLD BLK 30.48M	0
	P510-015 Tripp Lite	CABLE ASSY HD15 SHLD BLACK 4.57M	0
	S054-45I Tripp Lite	CABLE ASSY HD68 UNSHLD 1.14M	0
	S450-010 Tripp Lite	CABLE ASSY HD68 SHLD BEIGE 3.05M	0
	S366-006 Tripp Lite	CABLE ASSY HD50 BEIGE 1.83M	0
	S404-006 Tripp Lite	CABLE ASSY HD68 SHLD BEIGE 1.83M	0
	P500-006-R Tripp Lite	CABLE ASSY HD15 SHLD BLACK 1.83M	0
	S362-006 Tripp Lite	CABLE ASSY DB25 TO HD50 1.83M	0
	S055-38I Tripp Lite	CABLE ASSY HD68 UNSHLD 965.2MM	0
	P702-025 Tripp Lite	CABLE ASSY DB25 SHLD BLACK 7.62M	0
	S054-31I Tripp Lite	CABLE ASSY HD68 UNSHLD 787.4MM	0
	P702-006 Tripp Lite	CABLE ASSY DB25 SHLD BLACK 1.83M	0
	S366-003 Tripp Lite	CABLE ASSY HD50 BEIGE 914.4MM	0
	S366-010 Tripp Lite	CABLE ASSY HD50 BEIGE 3.05M	0
	P706-010 Tripp Lite	CABLE ASSY DB25 SHLD BLACK 3.05M	0
	S057-75I Tripp Lite	CABLE ASSY HD68 UNSHLD GRY 1.91M	0
	S075-42I Tripp Lite	CABLE ASSY HD68 UNSHLD GRY 1.06M	0
	S404-012 Tripp Lite	CABLE ASSY HD68 SHLD BEIGE 3.66M	0

D-Sub Cables

1. Overview

D-Sub cables (D-Subminiature cables) are a family of multi-pin connectors characterized by their D-shaped metal shell and parallel pin arrangements. They were first introduced in 1952 by ITT Corporation and became a standard interface for serial and parallel communication in early computing and industrial systems. Despite the rise of modern interfaces like USB and HDMI, D-Sub cables remain critical in legacy systems, industrial automation, and specialized equipment due to their reliability and robust mechanical design.

2. Major Types and Functional Classification

Type	Pin Count	Key Features	Applications
DE-9	9	Compact size, low-cost signal transmission	RS-232 serial ports, gaming controllers
DB-15	15	High-density pin layout	VGA video interfaces, Macintosh serial ports
DB-25	25	Supports parallel data transfer	Printer ports, industrial sensors
DC-37	37	High-pin-count for complex systems	Telecommunications, military equipment

3. Structure and Components

D-Sub cables consist of three primary elements: 1. D-Shaped Metal Shell: Provides EMI shielding and mechanical durability. 2. Pin Contacts: Typically made of phosphor bronze or beryllium copper with gold/silver plating for conductivity. 3. Dielectric Insulator: Prevents short circuits between pins, often using thermoplastic materials. Cable variants include standard 1:1 wiring and high-density designs with multiple contact rows.

4. Key Technical Specifications

Parameter	Typical Value	Significance
Impedance	50 -100	Ensures signal integrity at high frequencies
Current Rating	1A-5A per pin	Determines power delivery capability
Operating Temperature	-40 C to +85 C	Defines environmental tolerance
Shielding Effectiveness	60dB-100dB	Reduces electromagnetic interference
Termination Type	Solder, crimp, or IDC	Influences durability and assembly method

5. Application Fields

Industrial automation (PLCs, CNC machines)
Legacy computer systems (serial/parallel ports)
Test and measurement equipment (oscilloscopes)
Aerospace (avionics data buses)
Medical devices (diagnostic imaging systems)

6. Leading Manufacturers and Products

Manufacturer	Key Product Series	Special Features
TE Connectivity	DELPHI D-Sub Cables	High-vibration resistance for industrial use
Amphenol	Dura-Con HD D-Sub	High-density 4-row configuration
Molex	PicoBlade D-Sub	Miniaturized design for compact devices
Samtec	QTRADE D-Sub	Quick-mate alignment system

7. Selection Guidelines

Key considerations include: 1. Match pin count and gender to host interface requirements. 2. Evaluate environmental factors (temperature, vibration). 3. Choose appropriate shielding for EMI-sensitive environments. 4. Consider termination method based on maintenance needs. 5. Verify compliance with industry standards (EIA/TIA-232, MIL-STD-188). Example: Selecting DB-9 cables with ferrite cores for industrial motor control cabinets to reduce noise interference.

8. Industry Trends

While D-Sub cables face declining use in consumer electronics, they remain entrenched in industrial applications. Emerging trends include: 1. Hybrid D-Sub connectors integrating fiber optics alongside traditional pins. 2. Nanocoatings for corrosion resistance in harsh environments. 3. Increased adoption of high-density DA-15 interfaces in robotics. 4. RoHS-compliant materials replacing traditional tin-lead plating. The global D-Sub market is projected to maintain a 1.2% CAGR through 2030, primarily driven by industrial IoT deployments.