305-078-556-578

Edgeboard Connectors Overview

The EDAC Inc. 305-078-556-578 is a standard card edge connector from the 305 series, designed for panel mount applications with a vertical orientation. It features 78 positions arranged in a dual-row configuration with a 3.96 mm (0.156 inch) pitch. The connector utilizes gold-plated copper alloy contacts and a thermoplastic housing, supporting a continuous current rating of 5 A and an insulation resistance of 5 GOhms. It accommodates board thicknesses between 1.37 mm and 1.78 mm and operates within a temperature range of -40°C to +105°C.

Edgeboard Connectors Feature Summary

• Accepts between-contact and in-contact polarizing keys for secure positioning
• Provides high dielectric strength with a 1800 VACrms voltage rating
• Features gold-plated contacts for reliable signal transmission

Edgeboard Connectors Applications

• Industrial control systems requiring polarized connections
• High-voltage interface modules
• Panel-mounted electronic assemblies

Edgeboard Connectors Procurement Notes

Verify the specific ordering suffix against official EDAC documentation to confirm exact pin count, plating thickness, and housing color. Ensure compatibility with required polarizing key types before procurement. Confirm that the specified current and voltage ratings meet the target application's electrical requirements.

Edgeboard Connectors Selection Notes

Select this component when a dual-edge female connector with polarizing capability is required. The 3.96 mm pitch and 78-position count define the physical footprint. Verify that the target PCB thickness falls within the 1.37 mm to 1.78 mm acceptance range for proper contact engagement.

Edgeboard Connectors Part Context

This part belongs to the EDAC 305 series of standard card edge connectors. The series is characterized by robust thermoplastic housings and versatile mounting options. The 305-078-556-578 variant specifically addresses applications needing higher position counts with integrated polarization features.

Edgeboard Connectors Replacement Considerations

Cross-reference other EDAC 305 series parts with identical 78-position counts and 3.96 mm pitches. Verify that alternative models support the same polarizing key configurations and voltage ratings to ensure functional equivalence.