Connectors

Applications of Sub-D Connectors

• Industrial automation control wiring connections
• Serial communication interfaces such as RS232 and RS485
• Test and measurement system signal interfaces
• Medical monitoring and control system connections
• Telecom interface signal connections
• Legacy computer and peripheral device connections
• Data logging and monitoring system interfaces

Key Technical Specifications

• Pin count and connector density
• Contact current rating and voltage rating
• Contact plating material and corrosion resistance
• Shielding capability and EMI protection level
• Operating temperature rating
• Mechanical locking strength and mating cycle rating
• Mounting style such as PCB mount or panel mount

Types of Sub-D Connectors

• Standard Sub-D connectors
• High-density Sub-D connectors
• Mixed signal combo Sub-D connectors
• Industrial rugged Sub-D connectors
• Filtered Sub-D connectors for noise-sensitive systems

Lifecycle and Replacement Considerations

Sub-D connectors are usually selected during early mechanical and electrical design stages because cable harness design, panel cutouts, and mounting hardware depend on exact connector size and layout. When a Sub-D connector reaches end-of-life, replacement is not always simple if pin arrangement or shell dimensions change.

This is common in industrial, defense, and medical equipment where systems may remain in service for more than ten years. Maintenance teams often require the same connector model to avoid cable redesign, panel rework, or recertification testing. Even small mechanical or plating differences can affect long-term reliability.

Delays in sourcing matching Sub-D connectors can lead to downtime and increased service cost.

Maketronics assists global engineering and procurement teams with reliable sourcing of both active and obsolete Sub-D Connectors.