305-078-556-203

Edgeboard Connectors Overview

The EDAC Inc. 305-078-556-203 is a standard card edge connector from the 305 series, designed for dual-row applications with 78 positions. It features a contact spacing of 3.96 mm (0.156 inches) and a row spacing of 3.56 mm (0.140 inches). The connector accepts printed circuit boards with a nominal thickness of 1.57 mm (0.062 inches). Constructed with copper alloy contacts plated in gold, it supports a current rating of 5 A. The housing is made of green thermoplastic polyester, providing an insulating resistance of 5 GOhms.

Edgeboard Connectors Feature Summary

• Dual-edge female configuration with gold-plated copper alloy contacts
• Low-profile insulator body compatible with 0.062-inch PCBs
• Vertical panel mount installation style

Edgeboard Connectors Applications

• Industrial control systems requiring high-density connections
• Telecommunications equipment backplanes
• Test and measurement instrumentation modules

Edgeboard Connectors Procurement Notes

Verify the specific ordering suffix to ensure correct contact plating and housing color specifications. Confirm that the target application utilizes a 0.062-inch thick PCB to match the connector's design parameters. Check regional distributor availability as stock levels may vary. Ensure compliance with RoHS requirements if applicable to the project standards.

Edgeboard Connectors Selection Notes

Select this component when a dual-row connection is required for 78-position interfaces. The 3.96 mm pitch suits applications needing robust signal integrity with 5 A current capacity. Consider the vertical panel mount style for chassis integration. Verify thermal operating range compatibility with the system environment.

Edgeboard Connectors Part Context

This part belongs to the EDAC 305 series of standard card edge connectors. The series offers various position counts and mounting styles. The 305-078-556-203 specifically addresses high-pin-count needs with a dual-row layout. It is distinct from single-row variants within the same family.

Edgeboard Connectors Replacement Considerations

Cross-reference with other EDAC 305 series parts for alternative pin counts. Verify mechanical dimensions against existing board layouts before substitution.