DB9 Female IDC Crimp Connector for Flat Ribbon Cable

Specifications

• Product Type: D-SUB IDC Ribbon Cable Connector with Strain Relief
  
• Gender: Female (Receptacle / Socket Contacts)
  
• Pin Count: 9 Pins (2-Row Standard DB9 / DE-9)
  
• Pitch (Connector Pin Spacing): Standard D-SUB 2.77mm
  
• Cable Compatibility: Standard 1.27mm Pitch Flat Ribbon Cable (9 or 10 Conductor)
  
• Termination Style: Insulation Displacement Contact (IDC Crimp / Solderless)
  
• Strain Relief: Included Snap-On Plastic Strain Relief Clip
  
• Mounting Type: Cable Mount / Panel Mount (Flanged)
  
• Mounting Hardware: Dual Panel-Mount Flange Holes (3.05mm)
  
• Current Rating: 1A Continuous per pin
  
• Rated Voltage: 250V AC/DC Max
  
• Contact Resistance: 15mΩ Max
  
• Insulation Resistance: 1000MΩ Min at 500V DC
  
• Dielectric Withstanding Voltage: 500V AC for 1 minute
  
• Operating Temperature: -55°C to +105°C
  
• Material: Nickel-plated Steel Shell, Blue

Project Evolution

Unlock New Capabilities

• Past Projects (Prerequisites): If you've already built projects using basic microcontroller UART modules, jumper cables, or breadboard circuits, you're familiar with basic point-to-point serial communication. Upgrading to the DB9 female IDC crimp connector with strain relief is the natural next step for terminating high-density 9-channel signals—such as industrial RS232/RS485 sensor looms, CNC control lines, or internal panel extensions—using flat ribbon cables without soldering 9 individual wires.
• Feature Upgrade (What This Unlocks): This DB9 female IDC connector unlocks rapid, solderless ribbon cable assembly for 9-channel signal lines. Featuring two rows of insulation displacement contacts (IDC), a snap-on plastic strain relief clip, and a metal mounting shell, it allows you to crimp a standard 1.27mm pitch 9- or 10-conductor flat ribbon cable in a single step while protecting wire crimps from mechanical pulling.

Effort Level & Minimum Hardware

Effort Level: Beginner / Intermediate 

Minimum hardware to get started:

• Standard 1.27mm Pitch Flat Ribbon Cable (9 or 10 conductor) — required to press into the IDC contacts to route multi-channel signals cleanly through enclosures.
  
• Bench Vise or IDC Crimping Tool — required to apply flat, even pressure across the plastic clip to pierce all 9 wire insulations simultaneously.
  
• DB9 Male Plug Header or Cable — necessary to mate with this 9-pin female D-SUB socket

Virtual Technician & Pinout Guide

⚠️ Safety Warnings:

• Square Alignment Warning: Ensure the flat ribbon cable is cut strictly at a 90-degree angle and aligned square against the connector guides before crimping. A skewed cable will cause misaligned IDC blade contact or short adjacent wires.
• Single-Use IDC Contact Limit: Do not attempt to re-crimp or reuse an IDC connector after it has been fully compressed. Internal insulation displacement blades bend permanently during the first crimp and will fail to make reliable contact on subsequent attempts.
• Current Limitation Warning: IDC contacts on 28 AWG ribbon cables are rated for a maximum of 1A per line. Do not route high-current DC power rails (>1A) through ribbon cable wires.

Package Includes: 

1 X DB9 Female IDC Crimp Connector for Flat Ribbon Cable

Frequently Asked Questions

What type of cable is compatible with this DB9 female IDC connector? It is designed specifically for standard 1.27mm pitch flat ribbon cable (9 or 10-conductor, 28 AWG) for solderless insulation displacement termination.
Is this DB9 female IDC connector compatible with standard DB9 male pin headers? Yes, it features a standard 2-row DB9 female socket interface that securely mates with standard 9-pin male DB9 cable plugs, panel receptacles, and terminal breakout boards.
Can I use this DB9 IDC connector with standard round multi-core discrete cables? No, IDC connectors require flat ribbon cables with precise 1.27mm wire spacing so that the internal insulation displacement blades align accurately with each conductor core.
Power & Voltage

What is the maximum current rating per pin for this IDC ribbon connector? Each solid female contact socket is rated for up to 1A AC/DC continuous current when used with standard 28 AWG flat ribbon cable.
What is the maximum operating voltage rating across adjacent contacts? The connector is rated for an operating voltage of up to 250V AC/DC Max with a dielectric withstanding voltage of 500V AC for 1 minute.
Pinout & Wiring

How does standard 1.27mm flat ribbon cable map to the 2-row DB9 female pinout? Conductor 1 (red stripe) aligns with Pin 1, and adjacent ribbon conductors alternate between the top and bottom socket rows across the 9 positions.
Is a specialized crimping tool required to terminate this IDC connector? While a dedicated parallel-jaw IDC crimping tool is ideal, a standard bench vise or flat parallel-jaw pliers can press the cover down evenly across all socket contacts.
Libraries & Code

Does this DB9 female IDC connector require any software driver or library code? No, this is a passive physical connector component that requires no software drivers, microcode, or microcontroller libraries.
Can this connector carry differential RS422/RS485 or high-speed serial signals? Yes, as a physical hardware connector, it carries low-voltage digital signals, serial communication data streams, and DAQ channels reliably.
Troubleshooting

What happens if the flat ribbon cable is cut at an angle before crimping? An angled cut causes wire conductors to misalign with internal IDC blades, resulting in short circuits across adjacent pins or complete open-circuit channels.
Can I remove the ribbon cable and re-crimp a used DB9 female IDC connector? No, IDC internal contact blades deform during initial crimping; re-using a crimped connector will result in high contact resistance or intermittent pin failure.
Why are some signal pins showing open circuit after crimping? This occurs when insufficient or uneven pressure was applied during crimping. Ensure the plastic cover is fully latched on both side tabs.
Purchasing & Stock

Are these DB9 female IDC crimp connectors quality inspected at Probots? Yes, every batch undergoes visual QC inspection at Probots in Bangalore to verify aligned female contact sockets, undamaged housings, and complete strain relief clip fitment.
Is bulk/tiered pricing available for machinery manufacturers and R&D labs? Yes, Probots offers volume pricing and bulk dispatch for industrial automation OEMs, university laboratories, and panel builders across India.
Does Probots carry matching DB9 male IDC connectors and 1.27mm flat ribbon cables? Yes, we stock matching male DB9 IDC crimp connectors, 9/10-way flat ribbon cables, and terminal breakout modules in our Bangalore store.
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