305-020-555-278

Edgeboard Connectors Overview

The EDAC Inc. 305-020-555-278 is a standard card edge connector from the 305 series, designed for reliable signal transmission in electronic assemblies. It features a dual-row configuration with 20 positions and a precise 3.96 mm (0.156 inch) pitch. The unit accommodates a board thickness of 1.57 mm and utilizes gold-plated copper alloy contacts to ensure low resistance and durability. Rated for 5 A continuous current and 1800 VACrms dielectric strength, it operates within a temperature range of -40°C to +105°C. The housing is constructed from thermoplastic polyester, providing robust insulation with a minimum resistance of 5 GOhms.

Edgeboard Connectors Feature Summary

• Accepts between-contact and in-contact polarizing keys for secure alignment
• Dual female contact configuration ensures stable connection interface
• Gold-plated copper alloy contacts provide corrosion resistance and conductivity

Edgeboard Connectors Applications

• Panel-mounted electronic modules requiring polarized insertion
• Industrial control systems utilizing standard card edge interfaces
• Communication equipment needing high dielectric strength connections

Edgeboard Connectors Procurement Notes

Verify the specific suffix code against official EDAC documentation to confirm exact termination style and mounting orientation. Ensure compatibility with target PCB edge thickness and polarizing key requirements before procurement. Cross-reference manufacturer part numbers directly to avoid substitution errors due to minor specification variations.

Edgeboard Connectors Selection Notes

Select this component when a dual-row card edge connector with polarizing key capability is required. The 3.96 mm pitch and 20-position count define the physical footprint. Verify that the application environment stays within the specified -40°C to +105°C operating range and requires the stated 5 A current rating.

Edgeboard Connectors Part Context

This connector belongs to the EDAC 305 series, which offers various position counts and mounting styles. The 305-020-555-278 specifically denotes a 20-position variant with defined termination characteristics. It serves as a standardized interface solution within EDAC's broader portfolio of card edge and backplane connectors.

Edgeboard Connectors Replacement Considerations

Consult official EDAC cross-reference lists for verified substitutes. Generic equivalents may lack the specific polarizing key acceptance or exact dimensional tolerances required for panel mount applications.