305-020-556-278

Edgeboard Connectors Overview

The EDAC Inc. 305-020-556-278 is a dual-edge female card edge connector from the 305 Series, designed for board-to-board or backplane interconnections. It features 20 positions with a 0.156-inch (3.96mm) pitch across two rows. The connector utilizes gold-plated copper alloy contacts and a green thermoplastic polyester insulator. It supports panel mount installation and solder termination, accommodating card thicknesses between 0.054 and 0.070 inches.

Edgeboard Connectors Feature Summary

• Dual-edge female configuration for secure mating with specified edgeboards
• Gold-plated contacts ensure reliable signal transmission and corrosion resistance
• Thermoplastic polyester insulation provides stability within the operating temperature range

Edgeboard Connectors Applications

• Industrial control system interconnects
• Telecommunications equipment backplanes
• Test and measurement instrument modules

Edgeboard Connectors Procurement Notes

Verify the specific suffix code against the manufacturer's official ordering guide to confirm exact plating thickness, flange dimensions, and mounting style variations. Ensure compatibility with target PCB panel cutouts and verify RoHS3 compliance status through current documentation before finalizing procurement specifications.

Edgeboard Connectors Selection Notes

Select this component when a dual-row, 20-position interface with a 3.96mm pitch is required. Confirm that the mating card thickness falls within the 0.054 to 0.070 inch specification. Validate that the panel mount style aligns with the mechanical enclosure design requirements.

Edgeboard Connectors Part Context

This part belongs to the EDAC 305 Series of standard card edge connectors. The series offers various configurations including different pin counts, mounting styles, and contact materials. The 305-020-556-278 specifically denotes a 20-position dual-edge variant within this standardized product line.

Edgeboard Connectors Replacement Considerations

Cross-reference with other EDAC 305 Series variants such as 305-020-556-202 or 305-020-556-258 for potential substitutes. Verify identical pitch, position count, and mounting characteristics to ensure mechanical and electrical interchangeability.