305-074-556-203

Edgeboard Connectors Overview

The EDAC Inc. 305-074-556-203 is a standard card edge connector from the 305 series, designed for dual-row applications with 74 positions. It features a contact pitch of 0.156 inches (3.96 mm) and accepts printed circuit boards with a nominal thickness of 0.062 inches (1.57 mm). The component utilizes gold-plated copper alloy contacts and a green thermoplastic polyester insulator body. Rated for 5 A current, it operates within a temperature range of -40°C to +105°C and provides an insulation resistance of 5 GOhms.

Edgeboard Connectors Feature Summary

• Dual-row configuration with 74 positions for high-density signal routing
• Straddle mount installation style providing secure board retention
• Gold-plated contacts on copper alloy substrate for reliable conductivity
• Low-profile insulator body constructed from thermoplastic polyester

Edgeboard Connectors Applications

• Industrial control system backplanes
• Telecommunications equipment interconnects
• Test and measurement instrument modules
• Computer peripheral expansion cards

Edgeboard Connectors Procurement Notes

Verify that the specific ordering suffix matches the required row spacing and mounting orientation. Confirm compliance with RoHS3 directives and REACH regulations before integration. Ensure the selected variant aligns with the target PCB thickness specification of 1.57 mm to guarantee proper mechanical fit and electrical performance during assembly.

Edgeboard Connectors Selection Notes

Select this model when a dual-row card edge interface with a 3.96 mm pitch is required. The straddle mount design offers stability for vertical panel or PCB installations. Consider the 5 A current rating and wide operating temperature range for demanding environments. Verify compatibility with existing housing dimensions and mating card specifications.

Edgeboard Connectors Part Context

This component belongs to the EDAC 305 series of standard card edge connectors. The series is characterized by its robust construction and versatile mounting options, including panel and PCB mount configurations. The 305 series supports various position counts while maintaining consistent electrical characteristics and material standards across the product line.

Edgeboard Connectors Replacement Considerations

Direct substitutes include other EDAC 305 series variants with matching pin counts and pitch, such as the 305-072-556-203 or 305-080-556-203, provided the position count difference is acceptable. Cross-brand replacements require verification of identical pitch, row spacing, and mounting style.