305-078-521-204

Edgeboard Connectors Overview

The EDAC Inc. 305-078-521-204 is a dual-edge female card edge connector featuring 78 positions with a 0.156-inch (3.96mm) contact spacing. Designed for panel and through-hole mounting, it utilizes gold-plated contacts on a copper alloy substrate. The unit accommodates printed circuit boards with a nominal thickness of 0.062 inches (1.57mm). It operates within a temperature range of -40°C to +105°C and includes flange features for secure installation.

Edgeboard Connectors Feature Summary

• Accepts between-contact and in-contact polarizing keys for precise board alignment
• Provides a 5A continuous current rating with 1800VACrms dielectric strength
• Features a low-profile insulator body constructed from thermoplastic polyester

Edgeboard Connectors Applications

• High-density computing and storage system interconnects
• Industrial control panel board connections
• Aerospace communication network hardware

Edgeboard Connectors Procurement Notes

Verify the specific ordering suffix against the official EDAC 305 Series Ordering Guide to ensure correct flange and termination specifications. Confirm that the target application requires the standard 0.156-inch pitch configuration. Check RoHS compliance status if environmental regulations apply to the final assembly. Ensure the PCB design matches the specified 0.062-inch nominal thickness requirement for proper engagement.

Edgeboard Connectors Selection Notes

Select this component when a high-pin-count dual-edge interface is required for panel-mounted applications. The 78-position count supports complex signal routing in compact form factors. Consider the 5A current rating for power distribution needs alongside signal lines. Verify compatibility with existing polarizing key systems to maintain assembly integrity during manufacturing.

Edgeboard Connectors Part Context

This part belongs to the EDAC 305 series of standard card edge connectors, established as a leader in rack and panel applications since 1966. The series offers extensive interconnect solutions for global OEMs in computing, medical, and clean technology sectors. The 305 series is characterized by robust quality assurance and rigorous inspection protocols ensuring error-free delivery.

Edgeboard Connectors Replacement Considerations

Cross-reference with other EDAC 305 series variants sharing identical pin counts and pitch dimensions. Verify mechanical compatibility with existing panel cutouts and mating board edge guides. Ensure electrical ratings meet or exceed original design requirements before substitution.