D-Sub, D-Shaped Connectors

D-Sub, D-Shaped Connectors - Contacts

Part Number	Description / PDF	Quantity
09692815140 HARTING	CONN D-SUB PIN COAXIAL CABLE	143
09691827421 HARTING	CONN D-SUB SOCKET 12-14AWG CRIMP	304
09692870060 HARTING	D SUB MIXED MA PNEUMATIC CONTACT	144
09692825140 HARTING	DSUB MA PCR CRIMP CONTACT 50 OHM	31
09691825420 HARTING	CONN D-SUB SOCKET 16-20AWG CRIMP	132
09692825821 HARTING	D SUB MIXED MA 20 A SHORT CRIMP	502
09691825821 HARTING	D SUB MIXED FE 20 A SHORT CRIMP	692
09692815230 HARTING	CONN D-SUB PIN COAXIAL CABLE	0
09670005570 HARTING	CONN D-SUB PIN 22-26AWG CRIMP	1011
09691817821 HARTING	D SUB MIXED MA 20A PL3 SOLDER PO	59
09670003676 HARTING	D-SUB, FE HIGH-END AWG 18-22 CRI	63
09670008287 HARTING	CONN D-SUB PIN 20-24AWG 1=1000PC	3
09692817421 HARTING	CONN D-SUB PIN SLDR CUP GOLD	269
09692817140 HARTING	D SUB MIXED MA S CRIMP COAX 50 O	28
09692827140 HARTING	D SUB MIXED MA S CR CR COAX 50 O	5
09691825230 HARTING	CONN D-SUB SCKT COAX CABLE CRIMP	0
09670007167 HARTING	CONN DSUB PIN 28AWG CRIMP 500PCS	4
09691815423 HARTING	CONN D-SUB SOCKET SLDR CUP GOLD	500
09691817420 HARTING	D SUB MIXED FE 10A PL3 SOLD.POWE	40
09692825420 HARTING	CONN D-SUB PIN 16-20AWG CRIMP	273

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.