D-Sub, D-Shaped Connectors

D-Sub, D-Shaped Connectors - Contacts

Part Number	Description / PDF	Quantity
1731120039 Woodhead - Molex	CONN DSUB SCKT 16-20AWG SLDR CUP	21
1731120723 Woodhead - Molex	PLUG FCT CRP 26-28AWG 50U	1000
1731120146 Woodhead - Molex	CONN D-SUB SOCKET PCB GOLD	59
2029353000 Woodhead - Molex	MCAT MIDPOWER MALE 20-24AWG, 1.3	0
1731120138 Woodhead - Molex	CONN D-SUB SOCKET HOSE/TUBING	91
1731120160 Woodhead - Molex	CONN D-SUB PIN PCB GOLD	1
1731120137 Woodhead - Molex	CONN D-SUB SOCKET HOSE/TUBING	80
1731120134 Woodhead - Molex	CONN D-SUB PIN HOSE/TUBING	0
1727040155 Woodhead - Molex	CONN DSUB SCKT 12-16AWG SLDR CUP	173
1731120049 Woodhead - Molex	CONN D-SUB SOCKET PCB GOLD	499
1731120133 Woodhead - Molex	CONN D-SUB PIN HOSE/TUBING	82
1731121088 Woodhead - Molex	FCT TERM HFREQ SDR PLG 50 OHM	200
1731120748 Woodhead - Molex	FCT HDSIGN PLG CRP 24-28 300/REE	200
1731120823 Woodhead - Molex	COAX PCB ANGLED CONTACT 50 OHM	96
1731120050 Woodhead - Molex	CONN D-SUB PIN COAX CRIMP GOLD	568400
1731120031 Woodhead - Molex	CONN D-SUB SOCKET 20AWG SLDR CUP	120400
1731120165 Woodhead - Molex	CONN D-SUB PIN COAX GOLD	35100
1731120200 Woodhead - Molex	CONN D-SUB PIN 20-24AWG CRIMP	395
1731120415 Woodhead - Molex	FCT TERM SIGN STAMPED PLG CRP 20	0
1727040153 Woodhead - Molex	CONN D-SUB SOCKET 8-10AWG CRIMP	594

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.