305-078-520-204

Edgeboard Connectors Overview

The EDAC Inc. 305-078-520-204 is a standard dual-row card edge connector receptacle featuring 78 positions with a 3.96 mm (0.156 inch) contact spacing and 3.56 mm row spacing. Designed for .062 inch nominal thickness printed circuit boards, it utilizes gold-plated copper alloy contacts and a thermoplastic polyester insulator body. The component supports PCB mount installation in a straight configuration with solder termination, offering a 5 A current rating and an operating temperature range from -40°C to +105°C.

Edgeboard Connectors Feature Summary

• Accepts between-contact and in-contact polarizing keys for secure board alignment
• Features a low-profile insulator body constructed from thermoplastic polyester
• Provides reliable electrical connection through gold-plated copper alloy contacts

Edgeboard Connectors Applications

• Industrial control systems requiring robust card edge interfaces
• Telecommunications equipment utilizing standardized modular connections
• Test and measurement instrumentation needing high-density signal routing

Edgeboard Connectors Procurement Notes

Verify the specific suffix codes against official EDAC documentation to confirm exact plating thickness, insulation material grade, and mechanical tolerances. Ensure compatibility with the target PCB stack-up and mating card dimensions before procurement. Cross-reference the manufacturer part number with authorized distributor catalogs to validate current availability status and lead times. Confirm RoHS compliance requirements match project specifications.

Edgeboard Connectors Selection Notes

Select this connector when a dual-row interface with 78 positions and 3.96 mm pitch is required. It is suitable for applications demanding a 5 A continuous current rating and operation within a -40°C to +105°C environment. Consider the straight PCB mount style and solder tail termination for standard assembly processes. Evaluate the need for polarizing key compatibility if precise board insertion is critical.

Edgeboard Connectors Part Context

This component belongs to the EDAC 305 series of standard card edge connectors. The series offers various position counts and mounting styles while maintaining consistent 3.96 mm contact spacing. The 305-078-520-204 variant specifically addresses high-density interconnect needs with its 78-position dual-row configuration, fitting into broader industrial and commercial electronic system architectures.

Edgeboard Connectors Replacement Considerations

Direct substitutes include other EDAC 305 series parts with matching 78 positions and 3.96 mm pitch, such as 305-078-521-204, provided mechanical and electrical parameters align. Verify that alternative manufacturers offer identical row spacing and board thickness acceptance criteria.