D-Sub, D-Shaped Connectors

D-Sub, D-Shaped Connectors - Contacts

Part Number	Description / PDF	Quantity
1731121200 Woodhead - Molex	FCT TERM HPRC	0
170-102-170L003 NorComp	CONN D-SUB SOCKET 24-28AWG CRIMP	0
1731120769 Woodhead - Molex	FCT TERM HFREQ	0
1731120175 Woodhead - Molex	CONN D-SUB SOCKET COAX GOLD	0
09691845100 HARTING	D SUB FE 50 OHMS PCB SOLDER CONT	0
1731120347 Woodhead - Molex	FCT TERM HPWR	0
1731120244 Woodhead - Molex	FCT SCREW SET 4-40 UNC 10.7 ZINC	0
1731121083 Woodhead - Molex	FCT TERM HPWR CRP PLG 30 AMP 10-	0
L17HRD2F145G Storage & Server IO (Amphenol ICC)	D SUB -REAR RELEASE CONTACTS	0
DN50-2628PC1 Hirose	CONN CRIMP PIN D-SUB 26-28AWG	0
09670006572 HARTING	D SUB MA TURNED CONTACT AWG 26-2	0
030-9542-004 VEAM	MICRO CENTI-LOC CONT	897
1731120679 Woodhead - Molex	COAX SOLDER POT CONTACT 50 OHM	0
1731120021 Woodhead - Molex	FCT TERM SIGN STAMPED RCPT CRP 2	9980
09670008248 HARTING	CONN D-SUB SOCKET 20-24 AWG CRMP	0
132A13009X CONEC	FEMALE R/A SOLDER PIN 15A	0
09670007246 HARTING	DSUB-FE-CR-KON AWG24-28;AFS1;LR1	0
1418784 Phoenix Contact	CONN D-SUB PIN 26-28 AWG CRIMP	0
09692825232 HARTING	D SUB MIXED MA CRIMP/CRIMP COAX	0
1731121104 Woodhead - Molex	HIGH CURRENT PCB STRAIGHT CONTAC	0

D-Sub, D-Shaped Connectors - Contacts

1. Overview

D-Subminiature connectors, commonly referred to as D-Sub or D-Shaped connectors, are electrical connectors featuring a D-shaped metal shield. They are widely used for data, signal, and power transmission in industrial, computing, and communication systems. Their robust design ensures reliable electrical continuity and mechanical stability in demanding environments.

2. Main Types and Functional Classification

Type	Function Features	Application Examples
DE-9	9-pin configuration, compact size	RS-232 serial interfaces, PC COM ports
DB-25	25-pin configuration, parallel signal transmission	Older printer ports, industrial control systems
DC-37	37-pin high-density arrangement	Military equipment, test instrumentation
HD D-Sub	High-density double-row contacts	Video graphics (VGA), industrial automation

3. Structure and Components

Typical D-Sub connectors consist of: - Metal Shell: Zinc alloy or steel housing with EMI shielding - Insulator: High-temperature resistant thermoplastic or ceramic - Contact Arrangement: Male pins (plug) or female sockets (jack) in staggered rows - Mounting Hardware: Threaded or snap-in fixing mechanisms Contacts are usually made of phosphor bronze or beryllium copper with gold/tin plating for corrosion resistance.

4. Key Technical Specifications

Parameter	Typical Range	Significance
Current Rating	1-5 A per contact	Determines power handling capacity
Voltage Rating	50-600 V AC/DC	Ensures dielectric strength
Contact Resistance	10 m	Impacts signal integrity
Insulation Resistance	1000 M	Prevents leakage currents
Operating Temperature	-55 C to +125 C	Environmental durability

5. Application Fields

Computer peripherals (monitors, keyboards)
Industrial automation (PLCs, sensors)
Telecommunications (modems, routers)
Aerospace (avionics systems)
Test and measurement equipment

6. Leading Manufacturers and Products

Manufacturer	Representative Product
TE Connectivity	DEUTSCH D-Sub series with EMI filtering
Amphenol	High-density HD D-Sub 90-position connectors
Molex	Micro D-Sub for compact industrial applications
Samtec	High-speed D-Sub with 10 Gbps data rate

7. Selection Guidelines

Verify current/voltage requirements against contact ratings
Choose shell size based on pin count needs
Consider locking mechanisms for vibration-prone environments
Specify plating material for corrosion resistance
Ensure compliance with industry standards (e.g., MIL-DTL-24308)

8. Industry Trends

Key developments include miniaturization (sub-D connectors), hybrid designs integrating USB-C/HDMI signals, improved EMI shielding for 5G applications, and surface-mount technology (SMT) compatibility. Environmental regulations drive adoption of RoHS-compliant materials and lead-free plating solutions.