305-078-556-508

Edgeboard Connectors Overview

The EDAC Inc. 305-078-556-508 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 contact spacing of 3.96 mm (0.156 inches) and a row spacing of 3.56 mm (0.140 inches). The connector accepts printed circuit boards with a nominal thickness of 1.57 mm (0.062 inches). Contacts are constructed from copper alloy with gold plating to ensure reliable signal transmission. It provides a continuous current rating of 5 A and supports an insulation resistance of 5 GOhms. The operating temperature range spans from -40°C to +105°C.

Edgeboard Connectors Feature Summary

• Accepts between-contact and in-contact polarizing keys for secure board alignment
• Low profile insulator body constructed from thermoplastic material
• Gold-plated copper alloy contacts provide corrosion resistance and conductivity

Edgeboard Connectors Applications

• Panel-mounted electronic assemblies requiring high-density interconnects
• Industrial control systems utilizing standardized card edge interfaces
• Communication equipment modules requiring robust vertical mounting solutions

Edgeboard Connectors Procurement Notes

Verify the specific suffix codes against official EDAC documentation to confirm exact pin count, termination style, and plating specifications before ordering. Ensure compatibility with the target PCB thickness of 1.57 mm and verify that the required polarizing key options are included in the final bill of materials. Confirm RoHS compliance status through the manufacturer's latest certification documents.

Edgeboard Connectors Selection Notes

Select this component when a dual-row, 78-position interface is required for vertical panel mounting. The 3.96 mm pitch accommodates high-density designs while maintaining mechanical stability. Consider the 5 A current rating and wide temperature range for demanding environments. Verify that the solder lug or pin termination matches the assembly process requirements.

Edgeboard Connectors Part Context

This part belongs to the EDAC 305 Series of standard card edge connectors, which are widely used in modular electronic systems. The series offers various position counts and termination styles to support diverse design needs. The 305-078 variant specifically addresses applications requiring a higher density connection point within the established dimensional constraints of the series.

Edgeboard Connectors Replacement Considerations

Direct substitutes include other EDAC 305 series parts with matching 78-position configurations and identical 3.96 mm spacing. Verify mechanical dimensions and electrical ratings against the original datasheet to ensure functional equivalence without redesigning the host panel.