305-078-500-203

Edgeboard Connectors Overview

The EDAC 305-078-500-203 is a standard card edge connector featuring 78 positions in a dual female configuration. It utilizes a 3.96 mm (0.156 inch) contact spacing with a 3.56 mm row spacing. Designed for nominal 1.57 mm thick printed circuit boards, the unit employs gold-plated copper alloy contacts and a green thermoplastic polyester insulator body. The component supports a 5 A continuous current rating and offers 1800 VACrms insulation voltage capability.

Edgeboard Connectors Feature Summary

• Accepts between-contact and in-contact polarizing keys for secure board alignment
• Features a low profile insulator body design
• Utilizes gold-plated copper alloy contacts for reliable conductivity

Edgeboard Connectors Applications

• High-density electronic module interconnections
• Industrial control system backplanes
• Telecommunications equipment signal routing

Edgeboard Connectors Procurement Notes

Verify the specific pin count and row configuration against the target PCB layout to ensure mechanical compatibility. Confirm that the operating environment remains within the specified thermal limits for the polyether material. Check for required polarizing key accessories if board retention is critical. Ensure soldering processes align with the gold-plated contact specifications to maintain long-term reliability.

Edgeboard Connectors Selection Notes

Select this model when a high-position-count interface is required for 1.57 mm thick boards. The 3.96 mm pitch suits applications prioritizing spacing over miniaturization. Consider the vertical panel mount style if chassis integration is necessary. Evaluate the 5 A current capacity against total load requirements. Verify availability of compatible polarizing keys for assembly stability.

Edgeboard Connectors Part Context

This component belongs to the EDAC 305 series of standard card edge connectors. The series provides various position counts and mounting styles for diverse industrial needs. The 305-078 variant specifically addresses high-density requirements within the 3.96 mm pitch family. It shares common electrical characteristics with other models in the series while differing in physical dimensions.

Edgeboard Connectors Replacement Considerations

Cross-reference part numbers such as 305-078-500-201 or 305-078-520-207 for alternative termination styles or housing colors. Verify that substitute parts maintain the same 3.96 mm pitch and 1.57 mm board thickness tolerance. Ensure any replacement matches the dual-row female contact configuration.