305-078-520-203

Edgeboard Connectors Overview

The EDAC Inc. 305-078-520-203 is a standard card edge connector from the 305 series, designed for panel mount applications with a vertical orientation. It features 78 positions in a dual-row configuration with a contact spacing of 0.156 inches (3.96 mm). The connector utilizes gold-plated copper alloy contacts and accepts printed circuit boards with a nominal thickness of 0.062 inches (1.57 mm). Rated for 5 A continuous current, it 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
• Features a low-profile insulator body constructed from thermoplastic material
• Provides a 5A continuous current rating with 1800VACrms insulation capability

Edgeboard Connectors Applications

• Industrial control systems requiring robust panel-mounted interconnects
• Telecommunications equipment utilizing standardized card edge interfaces
• Test and measurement devices needing reliable high-density signal connections

Edgeboard Connectors Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to ensure compatibility with required polarizing key configurations and board thickness tolerances. Confirm that the selected variant meets the necessary environmental specifications for the intended operating temperature range. Cross-reference the part number with the latest datasheet to validate contact plating thickness and material composition requirements before final procurement decisions are made.

Edgeboard Connectors Selection Notes

Select this component when a dual-edge female connector with 78 positions is required for vertical panel mounting. Ensure the design accommodates the 0.156-inch pitch and supports the specified 5A current load. Consider the availability of compatible polarizing keys if mechanical alignment is critical. Verify that the host system's PCB thickness falls within the accepted range of 0.062 inches nominal.

Edgeboard Connectors Part Context

This connector belongs to the EDAC 305 series, which offers various position counts and row configurations. The series is characterized by its use of thermoplastic insulators and gold-plated contacts, providing durability in demanding environments. Similar parts in the series differ primarily in the number of positions and specific housing dimensions while maintaining consistent electrical ratings and interface standards.

Edgeboard Connectors Replacement Considerations

Direct substitutes within the same series include models with identical pin counts and pitch but different suffixes indicating variations in housing color or specific accessory inclusion. Verify mechanical fit and electrical ratings before replacing with alternative part numbers from other manufacturers.