305-042-521-278

Edgeboard Connectors Overview

The EDAC Inc. 305-042-521-278 is a standard card edge connector header featuring 42 positions arranged in a dual row configuration. It utilizes a 3.96 mm (0.156 inch) pitch and is designed for vertical panel mount installation with solder pin termination. The contacts are constructed from copper alloy with gold plating, supporting a continuous current rating of 5 A. The housing is made of green thermoplastic polyester, accommodating board thicknesses typically around 1.57 mm.

Edgeboard Connectors Feature Summary

• Accepts between-contact and in-contact polarizing keys for secure alignment
• Dual-row female contact design for high-density interconnection
• Gold-plated copper alloy contacts ensure reliable conductivity
• Thermoplastic polyester housing provides structural stability

Edgeboard Connectors Applications

• Industrial control systems requiring polarized card edge connections
• Telecommunications equipment interfaces
• Automotive electronics modules
• Test and measurement instrumentation backplanes

Edgeboard Connectors Procurement Notes

Verify the specific suffix '278' against official EDAC documentation to confirm the exact contact type and housing color specifications. Ensure compatibility with the required polarizing key style, as this series supports both between-contact and in-contact configurations. Cross-reference the datasheet for precise dimensional tolerances and mating force requirements before final integration.

Edgeboard Connectors Selection Notes

Select this component when a dual-row card edge connector with a 3.96 mm pitch is required. The 42-position count suits applications needing moderate I/O density. Verify that the system design accommodates the vertical panel mount style and that the 5 A current rating meets the electrical load requirements. Confirm the need for polarizing key compatibility during the mechanical design phase.

Edgeboard Connectors Part Context

This part belongs to the EDAC 305 Series, a line of standard card edge connectors known for robust performance in demanding environments. The series offers various position counts and mounting options, all sharing common electrical characteristics such as the 5 A rating and gold-plated contacts. The 305-042 variant specifically addresses needs for higher density within the standard pitch family.

Edgeboard Connectors Replacement Considerations

Direct substitutes within the same series include parts with identical pitch and position counts but different suffixes indicating variations in housing color or contact finish. For example, the 305-042-520-278 shares the 42-position dual-row structure but may differ in specific material grades or packaging. Always validate mechanical fit and electrical ratings before substitution.