305-056-521-503

Edgeboard Connectors Overview

The EDAC Inc. 305-056-521-503 is a standard card edge connector from the 305 series, designed for panel mount installation with a vertical orientation. It features a dual female configuration with 56 positions and a 3.96 mm (0.156 inch) pitch. The connector supports board thicknesses ranging from 1.37 mm to 1.78 mm. Contact plating is gold over nickel, ensuring reliable conductivity. The unit utilizes solder pin termination and copper alloy contacts. It operates within a temperature range of -40°C to +105°C and carries RoHS compliance.

Edgeboard Connectors Feature Summary

• Accepts between-contact and in-contact polarizing keys for secure positioning
• Provides 5A continuous current rating and 1800VACrms dielectric strength
• Features flush mount flange with floating bobbin design for stability

Edgeboard Connectors Applications

• Industrial control systems requiring robust card edge interfaces
• Telecommunications equipment backplanes
• Test and measurement instrumentation modules

Edgeboard Connectors Procurement Notes

Verify the specific suffix codes against the official EDAC ordering guide to ensure correct contact length, flange style, and insulation material. Confirm that the required polarizing key type matches the connector's acceptance specifications. Check for any recent component updates or lifecycle status changes directly with the manufacturer before finalizing procurement plans.

Edgeboard Connectors Selection Notes

Select this model when a dual-row, 56-position interface with 3.96 mm spacing is required. Ensure the host PCB thickness falls within the 1.37 mm to 1.78 mm operational window. Consider the 5A current rating and high voltage isolation for appropriate circuit protection. Verify compatibility with existing polarizing key requirements for assembly alignment.

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. The 305-056-521-503 variant specifically provides a dual female configuration suitable for high-density interconnect applications in demanding environments.

Edgeboard Connectors Replacement Considerations

Consult the EDAC 305 Series Ordering Guide for direct substitutes with differing position counts or flange configurations. Cross-reference with other EDAC series if mechanical constraints require different mounting styles or contact materials.