306-028-520-178

Overview

The EDAC Inc. 306-028-520-178 is a standard card edge connector receptacle from the 306 series. It features 56 positions with dual-edge female contacts and a 0.156-inch (3.96 mm) pitch. Designed for through-hole mounting, it accepts printed circuit boards with a nominal thickness of 0.062 inches (1.57 mm). The connector utilizes gold-plated copper alloy contacts housed in a green thermoplastic polyester body. It supports a current rating of 5 A and operates within a temperature range of -40°C to +105°C.

Feature Summary

• Dual-edge female contact configuration for secure board insertion
• Gold-plated copper alloy contacts ensure reliable conductivity
• Thermoplastic polyester housing provides structural stability
• Through-hole solder termination method for robust PCB attachment

Applications

• Industrial control system interconnections
• Telecommunications equipment backplanes
• Consumer electronic module interfaces
• Medical device internal circuitry connections

Procurement Notes

Verify the specific suffix codes against official EDAC documentation to confirm exact pin count, plating thickness, and flange specifications. Ensure compatibility with the target PCB thickness of 1.57 mm before procurement. Confirm RoHS compliance status directly with the manufacturer or authorized distributors, as regulatory requirements may vary by region and production batch. Cross-reference the part number with the latest ordering guide to avoid discrepancies in packaging or material composition.

Selection Notes

Select this component when a high-density connection with 56 positions is required on a single board interface. The 3.96 mm pitch allows for larger trace spacing compared to finer pitches, reducing manufacturing complexity. Choose this model if panel mounting or straight through-hole installation is preferred over surface mount alternatives. Ensure the application environment stays within the specified -40°C to +105°C operating range to maintain insulation resistance and contact integrity.

Part Context

This part belongs to the EDAC 306 series of standard card edge connectors, which are designed for general-purpose industrial and commercial applications. The series offers various position counts and mounting styles, providing flexibility for different board densities. The 306 series is characterized by its durable thermoplastic construction and standardized dimensions, ensuring interchangeability within the family while maintaining specific electrical ratings for each variant.

Replacement Considerations

Direct substitutes include other EDAC 306 series parts with identical 56-position dual-edge configurations and 3.96 mm pitch, such as 306-028-500-178, provided the housing color and specific flange details match the design requirements. Verify that any alternative maintains the same 5 A current rating and through-hole termination style to ensure mechanical and electrical compatibility without redesigning the PCB footprint.