306-028-421-178

Overview

The EDAC Inc. 306-028-421-178 is a dual-edge female card edge connector featuring 56 positions with a 0.156-inch (3.96mm) contact spacing. It utilizes tin-plated cantilever contacts and accepts printed circuit boards with a nominal thickness of 0.062 inches (1.57mm). The insulator body is green, constructed from thermoplastic polyester, and designed for panel mount installation via solder lug termination.

Feature Summary

• Accepts standard 0.062 inch nominal thickness PCBs
• Low profile insulator body design
• Single centerline row configuration

Applications

• Industrial control systems
• Telecommunications equipment
• Consumer electronics assemblies

Procurement Notes

Verify the specific ordering suffix to confirm plating type and contact configuration. Ensure the target application requires tin plating rather than gold, as this affects conductivity and corrosion resistance. Confirm that the board thickness falls within the acceptable range for reliable contact engagement.

Selection Notes

Select this component when a low-profile, dual-edge connector with 0.156-inch spacing is required. It is suitable for applications where cost-effective tin plating is preferred over gold. Verify compatibility with the specific PCB stack-up and mounting constraints before finalizing the design.

Part Context

This part belongs to the EDAC 306 series of card edge connectors. The series offers various position counts and spacing options. The 306-028-421-178 specifically denotes the 56-position variant with tin plating and green insulation, distinguishing it from gold-plated or different spacing alternatives in the same family.

Replacement Considerations

Cross-reference with other 306-series parts for position count variations. Check for identical mechanical dimensions if substituting with generic equivalents. Ensure the replacement maintains the 0.156-inch spacing and compatible PCB thickness requirements.