305-074-521-202

Edgeboard Connectors Overview

The EDAC Inc. 305-074-521-202 is a standard card edge connector receptacle featuring 74 positions arranged in a dual-row configuration. It utilizes a 3.96 mm (0.156 inch) contact spacing with a 3.56 mm row spacing, designed to accept printed circuit boards with a nominal thickness of 1.57 mm. The contacts are constructed from copper alloy and feature gold plating for reliable conductivity, supporting a continuous current rating of 5 A. The housing is made of thermoplastic polyester, offering a low-profile design suitable for PCB mount applications at a straight angle.

Edgeboard Connectors Feature Summary

• Accepts between-contact and in-contact polarizing keys for secure board alignment
• Features a low-profile insulator body for compact assembly requirements
• Supports high voltage isolation with a 1800VACrms rating

Edgeboard Connectors Applications

• Industrial control systems requiring robust interconnects
• Telecommunications equipment infrastructure
• Automotive electronic modules
• Medical device internal connections
• Research and scientific instrumentation

Edgeboard Connectors Procurement Notes

Verify the specific part number suffix against official EDAC documentation to confirm exact plating thickness, insulation resistance values, and RoHS compliance status. Ensure the ordering information matches the required contact spacing and board thickness specifications before procurement. Cross-reference manufacturer datasheets for accurate environmental operating temperature ranges and mechanical durability ratings.

Edgeboard Connectors Selection Notes

Select this component when a dual-row card edge connector with 74 positions and 3.96 mm pitch is required. Consider the 5 A current rating and 1800VACrms insulation capability for appropriate electrical safety margins. Evaluate the straight PCB mount style and thermoplastic polyester housing material for compatibility with existing enclosure designs and thermal management needs.

Edgeboard Connectors Part Context

This component belongs to the EDAC 305 series of standard card edge connectors. The series offers various position counts and row configurations to accommodate different board densities. The 305 series is characterized by its durable construction and ability to handle significant electrical loads, making it a common choice for demanding industrial and commercial electronic applications requiring reliable signal transmission.

Edgeboard Connectors Replacement Considerations

Direct substitutes within the same series include models like 305-074-521-502. Verify that any replacement maintains identical pin count, pitch, row spacing, and mounting style to ensure mechanical fit and electrical performance equivalence without redesigning the host PCB layout.