9 Pin D-Sub Male Connector | OEM Factory in China
Part Number: YWSDC-P09B0000 Color: Black
9 pin d-sub male connector, Crimping type, gold flash +tin
| Part NO | YWSDC-P09B0000 | Lead Time | 3-4 weeks |
| Rated Current | 5A | Rated Voltage | 250V AC/DC |
| Position | 9 pin | Order Quantity | Small Order Available |
| Operating Temperature | -40 to +105℃ | Mating Durability | 500 cycles for 30u” gold flash |
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9 Pin D-Sub Male Connector | OEM Factory in China
Precision-Engineered Connectivity for Business Equipment, Industrial Automation & Data Communication
Reliable 9 Pin D-Sub Male Connector Solution
YW Precision Electronics is a trusted OEM factory in China specializing in high-quality 9 pin D-Sub male connectors (also known as DB9 male connectors). Built with precision-machined brass pins, durable metal shells, and reliable insulation housings, our connectors deliver stable signal and power transmission for a wide range of demanding applications.
Whether you’re manufacturing business equipment, electronic office systems, industrial automation gear, or medical devices, our 9 pin D-Sub male connectors offer the durability, precision, and cost-efficiency required for reliable OEM production at scale.
Key Features & Benefits
🔩 Precision-Machined Pins
Brass Pins: Gold-plated or tin-plated contacts ensure low contact resistance and stable, long-term signal transmission.
🛡️ Durable Metal Shell
Zinc Alloy / Steel Shell: Provides mechanical protection, EMI/RFI shielding, and a secure mating interface for repeated connect/disconnect cycles.
⚡ Stable Signal & Power Transmission
Low Insertion Loss: Engineered for consistent data and power transmission, critical for control systems, PLCs, and automation equipment.
⚙️ Multiple Mounting Options
Flexible Termination: Available with solder cup, PCB right-angle, PCB straight, IDC, and crimp termination to fit diverse OEM designs.
🏭 OEM & ODM Factory Direct
Custom Manufacturing: Factory-direct pricing from China with support for custom plating, shell finishes, packaging, and private labeling.
✅ Industry-Standard Compatibility
DE-9 / DB9 Standard: Fully interchangeable with standard 9-pin D-Sub female counterparts used across legacy and modern equipment.
Technical Specifications
Electrical Parameters
| Parameter | Specification | Notes |
|---|---|---|
| Pin Configuration | 9-pin (2 rows: 5 + 4), DE-9 standard | Standard D-Sub layout |
| Current Rating | 1A – 5A per contact | Depends on pin gauge and plating |
| Voltage Rating | 50V – 250V AC/DC | Application-dependent |
| Contact Resistance | ≤ 10mΩ | Ensures minimal signal loss |
| Insulation Resistance | ≥ 1000MΩ @ 500VDC | High electrical isolation |
| Dielectric Withstanding Voltage | 1000V AC / 1 minute | / |
Physical Specifications
| Dimension | Value | Standard |
|---|---|---|
| Pin Count | 9 pins (male) | DE-9 / DB9 standard |
| Shell Size | Shell size 1 (E-size) | D-Sub industry standard |
| Contact Material | Brass / Phosphor Bronze | Gold or tin plated |
| Shell Material | Zinc Alloy / Steel / Plastic | Nickel or tin plated finish available |
| Insulator Material | Thermoplastic (PBT / Nylon) | UL94V-0 flame-rated |
| Operating Temperature | -55°C to +105°C | Standard range |
Termination & Mounting Options
| Termination Type | Description | Typical Use |
|---|---|---|
| Solder Cup | Manual wire soldering to each pin | Cable assemblies, custom harnesses |
| PCB Right-Angle | Through-hole mount at 90° to board | Panel-mount equipment, PLCs |
| PCB Straight | Vertical through-hole mount | Internal board-to-board connections |
| IDC (Insulation Displacement) | Ribbon cable termination without stripping | High-volume production cabling |
| Crimp | Individually crimped contacts | Field-serviceable, high-reliability applications |
Applications of 9 Pin D-Sub Male Connector
The 9 pin D-Sub male connector remains one of the most widely adopted interconnect solutions across a broad range of sectors, valued for its proven reliability, standardized form factor, and broad compatibility:
Primary Application Sectors
- Business Equipment: Point-of-sale terminals, barcode scanners, cash registers, and retail hardware requiring serial (RS232) connectivity
- Electronic Office Systems: Printers, copiers, fax machines, and multifunction devices needing stable data interfaces
- Industrial Automation: PLC programming ports, HMI panels, sensors, and factory automation controllers
- Data Communications: RS232/RS422/RS485 serial links, modems, network switches, and legacy communication equipment
- Medical Equipment: Diagnostic instruments, patient monitors, and laboratory analyzers requiring reliable serial data connections
- Robotic Machinery: Robot controller interfaces, motion control feedback, and servo drive communication
- Control Systems and PLCs: Industrial control cabinets, programmable logic controllers, and SCADA system interfaces
- Signal and Power Transmission: Low-voltage power distribution combined with control signal transmission in compact equipment designs
Common Use Cases
- Serial console connections for programming and configuring PLCs and industrial controllers
- Interfacing legacy RS232 equipment with modern automation systems
- Data logging connections between measurement instruments and computers
- Cable harness assemblies for CNC machines and robotic arms
- Panel-mount connectors on medical diagnostic and monitoring devices
- Office equipment internal wiring and external serial peripheral connections
Why Choose Our 9 Pin D-Sub Male Connector?
| Feature | 9 Pin D-Sub Connector | M12 Connector | USB / RJ45 |
|---|---|---|---|
| Form Factor | Compact D-shell, 2-row 9-pin | Round, threaded coupling | Rectangular, tool-free plug |
| Environmental Sealing | IP20 (standard), IP67 with hood/boot option | IP67/IP68 | IP20 (typical) |
| Durability | 500+ mating cycles | 500+ mating cycles | 100-500 cycles |
| Industry Standardization | DE-9 / EIA-574 (RS232) | IEC 61076-2-109 | USB-IF / IEEE 802.3 |
| Legacy Equipment Compatibility | Excellent (industry standard for decades) | Limited (newer standard) | Limited for older serial systems |
| Cost Efficiency | Very cost-effective for OEM production | Moderate | Low to moderate |
Installation & Wiring Guide
Pre-Installation Checklist
- Confirm your equipment requires male (pin-type) rather than female (socket-type) connector
- Verify pinout configuration matches your RS232/RS422/RS485 or custom signal assignment
- Check current and voltage ratings against your application requirements
- Select the correct termination type (solder cup, PCB mount, IDC, or crimp) for your assembly process
- Review shell material and plating for your environmental and shielding needs
Installation Methods
- Solder Cup Assembly: Best for custom cable assemblies requiring flexible wire routing
- PCB Mounting: Ideal for panel-mount equipment with direct board-level integration
- IDC Termination: Fast, high-volume production assembly using ribbon cable
- Crimp Contacts: Preferred for field-serviceable or high-reliability harnesses
Wiring Tips
- Follow standard RS232 pinout conventions (TXD, RXD, RTS, CTS, DSR, GND, DCD, DTR, RI) unless using a custom signal map
- Use appropriate wire gauge (typically 24-28 AWG) for signal-level connections
- Secure the shell with screw-lock or jack-screw hardware to prevent accidental disconnection
- Apply strain relief boots for cable assemblies subject to flexing or vibration
- Perform continuity and insulation resistance testing after assembly, before installation
- For shielded cable applications, ensure the shell is properly grounded to reduce EMI
Frequently Asked Questions (FAQ)
Q1: What industries use 9 pin D-Sub male connectors?
9 pin D-Sub male connectors are widely used in business equipment, electronic office systems, industrial automation, data communications, medical equipment, robotic machinery, control systems and PLCs, and general signal and power transmission applications requiring a compact, reliable serial interface.
Q2: What is the difference between a 9 pin D-Sub male and female connector?
The male connector has protruding pins, while the female connector has recessed sockets that receive the pins. Male and female connectors must be paired correctly based on your equipment’s port type; most computer and controller serial ports use a male DE-9 connector, requiring a female cable connector, though configurations vary by device.
Q3: What current and voltage ratings do 9 pin D-Sub connectors support?
Standard 9 pin D-Sub male connectors typically support 1A to 5A per contact and working voltages from 50V to 250V AC/DC, depending on contact plating and shell design. Always confirm ratings against the specific product datasheet for your application.
Q4: How long do D-Sub connectors last?
Our 9 pin D-Sub male connectors are rated for 500+ mating cycles, with metal shell versions offering long-term mechanical durability under normal industrial use. Actual service life depends on environmental exposure and handling frequency.
Q5: Can 9 pin D-Sub connectors be used outdoors or in harsh environments?
Standard D-Sub connectors are rated IP20 and best suited to indoor or enclosed environments. For outdoor or harsh conditions, we offer optional environmentally sealed hoods, backshells, and boots to improve dust and moisture resistance. For fully waterproof requirements, our M12 connector line may be a better fit.
Q6: What termination options are available?
We offer solder cup, PCB right-angle, PCB straight, IDC (insulation displacement), and crimp termination styles, allowing you to select the best option for your cable assembly or board-mount design.
Q7: Is the 9 pin D-Sub male connector compatible with RS232 equipment?
Yes. The 9 pin D-Sub (DE-9) connector is the industry-standard interface for RS232 serial communication and remains compatible with a wide range of legacy and modern equipment using the standard pinout.
Q8: How do I troubleshoot connection problems?
First, inspect for bent, corroded, or misaligned pins. Test continuity with a multimeter across each contact. Confirm the pinout matches your intended signal assignment. Ensure the connector is fully mated and the shell screws are secured. Replace the connector if pins show visible wear or oxidation.
Q9: Can you provide custom plating or shell finishes?
Yes. As an OEM/ODM factory, we support custom gold or tin plating thickness, nickel-plated or black-oxide shell finishes, custom packaging, and private labeling for bulk and project-based orders.
Q10: What’s the lead time for OEM orders from your China factory?
Standard 9 pin D-Sub male connectors typically ship within 5-10 business days. Custom-tooled or large-volume OEM orders may require 2-4 weeks depending on specification complexity. Contact our sales team at [email protected] for a lead time quote based on your requirements.
Certifications & Standards
Our 9 pin D-Sub male connectors meet international quality and industry standards:
EIA-574 (RS232)
MIL-DTL-24308 Reference
ISO 9001:2015
UL94V-0 Insulator
RoHS Compliant
CE Marked
REACH Compliant
Custom OEM/ODM Available
MIL-DTL-24308 Reference
ISO 9001:2015
UL94V-0 Insulator
RoHS Compliant
CE Marked
REACH Compliant
Custom OEM/ODM Available
Looking for a Reliable 9 pin D-Sub Connector Supplier?
Partner with our OEM factory in China for competitively priced, high-quality 9 pin D-Sub male connectors. Our team provides technical support, custom manufacturing, and fast, reliable order fulfillment.
Phone: Available upon request
Email: [email protected]
Response Time: Within 24 business hours
Additional Resources & Documentation
- 9 Pin D-Sub Connector TechnicalManual (PDF) – Complete specifications, pinout, and assembly guide
- RS232 Pinout Reference Chart – Standard signal assignments for 9 pin D-Sub connectors
- Connector Comparison Chart – D-Sub vs M12 vs USB vs RJ45
- Troubleshooting Guide – Common D-Sub connector issues and solutions
- Telecommunications Industry Association (TIA) – Official RS232/EIA standards body (external link)
- Blog: Selecting the Right D-Sub Connector for Your OEM Project – Expert tips and industry insight
About 9 Pin D-Sub Connectors & OEM Manufacturing
The 9 pin D-Sub connector, standardized as DE-9 and long associated with the RS232 serial interface, remains one of the most enduring and widely deployed connector formats in electronics manufacturing. Its distinctive D-shaped metal shell prevents incorrect insertion, while its two-row, 9-contact layout provides a compact yet reliable interface for both legacy and modern equipment.
YW Precision Electronics is a leading OEM/ODM factory based in China, supplying high-quality 9 pin D-Sub male connectors, cable assemblies, and connector components to manufacturers worldwide. With deep experience serving business equipment, industrial automation, medical device, and robotics markets, we understand the precision and consistency required for dependable serial connections in mission-critical equipment.
Whether you’re designing new office equipment, upgrading an industrial control panel, or sourcing components for a robotics platform, our 9 pin D-Sub male connectors deliver the durability, signal integrity, and manufacturing consistency your OEM production requires. We offer standard products for fast delivery as well as fully custom solutions tailored to your specifications.
Why 9 Pin D-Sub Connectors Still Matter
- Proven Reliability: Decades of field deployment have proven the DE-9 connector’s mechanical and electrical reliability across countless applications.
- Broad Compatibility: Continued use in industrial, medical, and office equipment ensures ongoing demand for high-quality replacement and OEM parts.
- Manufacturing Flexibility: Multiple termination styles and shell finishes allow the same base connector to serve diverse OEM designs.
- Cost Efficiency: Mature manufacturing processes keep unit costs low without sacrificing quality, ideal for high-volume OEM production.
- Standardized Design: Compliance with EIA-574 and related standards ensures compatibility with a global base of existing equipment.
