305-038-521-558

Edgeboard Connectors Overview

The EDAC Inc. 305-038-521-558 is a standard card edge connector from the 305 series, designed for dual-edge board applications. It features 38 positions with a 0.156-inch (3.96 mm) pitch and accepts board thicknesses between 0.054 and 0.070 inches. The connector utilizes copper alloy contacts with gold plating and a half-beam termination style for secure mating. Rated for 5 A continuous current, it employs a solder pin end-type for panel mounting. The housing is constructed from green thermoplastic polyester, ensuring reliable performance across an operating temperature range of -40°C to +105°C.

Edgeboard Connectors Feature Summary

• Accepts between-contact and in-contact polarizing keys for enhanced alignment and security
• Features a half-beam contact design for positive retention during mating cycles
• Supports dual-edge card configurations with robust gold-plated copper alloy contacts

Edgeboard Connectors Applications

• Panel-mounted electronic interconnect systems requiring polarized keying
• Industrial control modules utilizing dual-edge circuit boards
• High-reliability data acquisition hardware interfaces

Edgeboard Connectors Procurement Notes

Verify that the specific application requires the 3.96 mm pitch and dual-edge configuration before procurement. Confirm that the polarizing key requirements match the available between-contact or in-contact options. Ensure the panel mounting style aligns with the mechanical design constraints. Validate that the 5 A current rating meets the electrical load demands of the target circuit. Check for RoHS compliance status if environmental regulations apply to the final assembly.

Edgeboard Connectors Selection Notes

Select this component when a high-current, dual-edge connector with polarizing capabilities is required. The 305 series offers superior retention compared to standard connectors due to its half-beam contact structure. Consider the panel mount installation method and the specific board thickness tolerance. The gold plating ensures low contact resistance for signal integrity. Evaluate the thermal operating range to ensure compatibility with the environment.

Edgeboard Connectors Part Context

This part belongs to the EDAC 305 series of standard card edge connectors, which are engineered for demanding industrial and commercial applications. The series provides various position counts and mounting styles while maintaining consistent electrical characteristics. The 305-038-521-558 specifically addresses needs for dual-edge connectivity with integrated polarization features, distinguishing it from non-polarized variants within the broader product line.

Edgeboard Connectors Replacement Considerations

No public confirmed substitute part numbers are available.