D-Sub, D-Shaped Connectors

D-Sub, D-Shaped Connectors - Contacts

Part Number	Description / PDF	Quantity
DM51380-1 VEAM	051380-0001	0
DM53741-4 VEAM	CONN D-SUB PIN COAX CRIMP GOLD	0
DM130338-5 VEAM	CONN D-SUB PIN 8AWG CRIMP GOLD	0
031-1147-022 VEAM	38999 II CON SKT PC 22 .021 DI	0
DM53740-5147 VEAM	DSUB SZ 8 PLUG NM SOD 50OHM	0
330-7634-010 VEAM	D SUB	0
DM53743-19 VEAM	DSUB SKT COAX CRMP R/A 50O G50	0
DM53740-35 VEAM	CONN D-SUB PIN COAX CABLE CRIMP	0
DM121073-201 VEAM	DSUB SZ8 MACHINED CONTACT	0
DM53745-105 VEAM	DSUB COAX HP P R/A 30	0
11437052-6 REV P VEAM	DSUB SKT COAX HP SOD G50	0
110238-0034/PC VEAM	DSUB CON D*U PIN CRP1 STAMPED	0
DM130346-1 VEAM	CONN D-SUB SOCKET COAX CABLE SLD	0
DM53744-64 VEAM	CONN D-SUB SOCKET 12AWG SLDR CUP	22
DM53742-5127 VEAM	DSUB SKT COAX SOD STR 50O G50	0
110238-0035/PC VEAM	DSUB CON D*U SKT CRIMP STAMPED	3372
D130365-1 VEAM	DSUB COAX 30 P STR 50 OHM 30U	0
053745-0122 VEAM	DSUB CON COAX 8 R/A HP G30 EUR	0
DM53741-1 VEAM	CONN D-SUB PIN COAX CRIMP GOLD	0
DM53740-36 VEAM	DSUB PIN COAX STR 50OHM G50 NM	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.