2026年7月21日
Wire Harness Sourcing, DFM, and Quoting Guide: What OEM Buyers and Engineers Need to Know
Harness design explained for OEM buyers and engineers. Learn what wire harnesses are, key specs to prepare, and...
Detailed Product Information
Technical Data & Reference
Structured parameters, material notes, application context and frequently asked questions for engineering and procurement evaluation.
Competitor & Cross-Reference
- Alternative Type
- Intermateable With
- Competitor Part Number
- Standard DB9 / TE Connectivity AMPLIMITE / Amphenol D-Subminiature Series Compatible
- Mates With
- Standard D-Sub 9-Pin Receptacles on Servo Drives (e.g., Yaskawa, Panasonic, Delta), PLCs, and Industrial PCs.
Intermateable: This part is mechanically and electrically compatible for mating with the listed competitor connector. Mixed use in the same connector system is supported.
Technical Specifications
- Connector Type
- D-Sub 9-Pin (DB9) Male/Female
- Cable Architecture
- Twisted Pairs for Differential Signals
- Number of Pins
- 9 Positions
- Wire Gauge
- 24 AWG to 28 AWG
- Locking Mechanism
- 4-40 UNC Thumbscrews / Standoffs
- Shielding Type
- Aluminum Foil + Tinned Copper Braid
- Cable Length
- Custom OEM Lengths (1m, 3m, 5m+)
- Protocol Support
- RS-232, RS-422, RS-485
Material Composition
| Material | Value / Description |
|---|---|
| Connector Shell | Brass with nickel plated |
| Cable Conductor | Bare or Tinned Stranded Copper |
| Contacts | Brass, Gold-Plated (e.g., 15µ", 30µ") |
| Insulator/Dielectric | PBT, Black, UL94V-0 |
| Overmolding (Hood) | Molded PVC or Custom Metal Shell |
| Cable Jacket | Industrial PVC (Standard) or PUR |
| Thumbscrews | Nickel-Plated Brass or Steel |
| RoHS / REACH | Fully Compliant |
Technical Characteristics
| Characteristic | Value |
|---|---|
| Voltage Rating | 250V / 300V AC/DC |
| Operating Temperature | -25°C to +80°C |
| Current Rating | 1A to 2A per contact |
| Flame Retardant Grade | UL 1581 VW-1 |
| Contact Resistance | ≤ 20 mΩ |
| Insulation Resistance | ≥ 10 MΩ @ 300V DC |
| Mating Durability | ≥ 500 Cycles |
| Quality Testing | 100% Continuity & Pin-to-Pin Tested |
| Conductor resistance | ≤ 5 Ω |
| Minimum bending radius | Fixed: 8x OD / Flexible: 10x OD |
Application Scenarios
-
Servo Motor Control Systems: Serving as the critical absolute encoder feedback link between the servo motor and amplifier, ensuring zero-latency, error-free position data transmission via RS-485 protocols.
-
Programmable Logic Controllers (PLCs): Providing a reliable RS-232 serial programming and data acquisition interface between industrial PLCs and Human-Machine Interfaces (HMIs) on the factory floor.
-
CNC Machining Centers: Connecting central control units to multi-axis motor drives, utilizing robust 4-40 UNC locking screws to maintain connection integrity despite extreme machine vibration.
-
Test and Measurement Equipment: Delivering secure, shielded serial connections for laboratory instruments and data loggers, preventing electrical noise from corrupting sensitive diagnostic readings.
Frequently Asked Questions
Can you manufacture these D-Sub cables with custom pinout assignments (e.g., Null Modem cross-wiring)?
Absolutely. As a direct OEM manufacturer, we can configure the internal wiring to your exact schematics, whether you need straight-through, null-modem (crossover), or highly proprietary pinout configurations for specific servo drives.
Are these cables shielded against industrial EMI/RFI noise?
Yes. For reliable RS-422 and RS-485 communication, our industrial DB9 cables feature dual-shielding (a primary aluminum foil shield wrapped with a secondary high-density tinned copper braid) that is properly grounded to the connector shell to block electromagnetic interference.
Should I choose an overmolded PVC hood or an assembled metal hood?
For standard applications and cost-effectiveness in volume production, molded PVC hoods are excellent and provide great strain relief. If your application requires extreme EMI shielding or field-repairability, we recommend assembled zinc-die-cast metal hoods.
Do you offer different locking hardware options?
Yes, we provide various hardware options to suit your equipment. The most common are standard 4-40 UNC thumbscrews for easy manual locking, but we can also provide hex standoffs or slide-latch mechanisms based on your panel design.
What is the Minimum Order Quantity (MOQ) for custom DB9 assemblies?
We offer flexible MOQs tailored for B2B clients. Whether you need a small batch of 100 pieces for equipment prototyping or high-volume mass production, please contact our engineering team to discuss your project.
Overview and Application Notes
Overview Engineered for reliable serial data transmission in industrial automation, our Custom D-Sub 9-Pin (DB9) Servo Encoder Cable Assemblies provide a robust communication link between servo drives, PLCs, and central controllers. Designed to handle RS-232, RS-422, and RS-485 protocols, these assemblies feature premium twisted-pair copper conductors and double-shielding (foil plus braid) to ensure absolute signal integrity in high-noise environments. Manufactured in our ISO-certified facility in strict accordance with IPC/WHMA-A-620 standards, we offer comprehensive OEM/ODM services. Whether you require specific pinout configurations, custom cable lengths, or specialized overmolded connector hoods, we deliver tailored interconnect solutions that integrate seamlessly into your precision motion control systems.
Application Notes
-
Secure Mechanical Locking: To prevent accidental disconnection in high-vibration CNC or stamping environments, always utilize the integrated 4-40 UNC thumbscrews to firmly secure the DB9 plug to the mating receptacle.
-
EMI/RFI 360-Degree Shielding: For RS-422/RS-485 differential signals over long distances, ensure the cable’s braided shield is 360-degree terminated to the metal shell of the D-Sub connector. This creates a continuous Faraday cage against Variable Frequency Drive (VFD) noise.
-
Pinout Verification: Serial communication pinouts (e.g., Null Modem vs. Straight-Through) vary significantly by servo drive manufacturer. Always verify the Tx/Rx and GND pinning requirements of your specific hardware before finalizing the custom order.
