305-042-556-278

Edgeboard Connectors Overview

The EDAC Inc. 305-042-556-278 is a standard card edge connector from the 305 series, designed for panel mount applications with a vertical orientation. It features a dual-row configuration with 42 positions and a contact spacing of 3.96 mm (0.156 inches). The connector accepts printed circuit boards with a nominal thickness of 1.57 mm (0.062 inches). Constructed with copper alloy contacts that are gold-plated, it supports a current rating of 5 A. The insulator body is made of thermoplastic material, providing an insulation resistance of 5 GOhms. Operating temperatures range from -40°C to +105°C.

Edgeboard Connectors Feature Summary

• Dual-row female contact configuration for reliable signal transmission
• Gold-plated copper alloy contacts ensure low contact resistance and durability
• Thermoplastic insulator body provides stable electrical insulation properties
• Vertical panel mount design facilitates secure board integration

Edgeboard Connectors Applications

• Industrial control systems requiring robust card edge interfaces
• Telecommunications equipment utilizing standard board thicknesses
• Test and measurement devices needing high-reliability connections
• Computing hardware modules with vertical mounting constraints

Edgeboard Connectors Procurement Notes

Verify the specific ordering suffix against the manufacturer's official datasheet to confirm exact termination style and flange characteristics. Ensure compatibility with the target PCB thickness of 1.57 mm. Confirm RoHS compliance status if required by project specifications. Cross-reference the part number with authorized distributors to validate availability and authenticity before purchase.

Edgeboard Connectors Selection Notes

Select this component when a dual-row, 42-position interface is required for panels. The 3.96 mm pitch suits applications needing wider spacing than standard .100 inch connectors. Verify that the vertical mounting angle aligns with the mechanical enclosure design. Ensure the 5 A current rating meets the electrical load requirements of the connected circuitry.

Edgeboard Connectors Part Context

This part belongs to the EDAC 305 series of standard card edge connectors. The series offers various position counts and row configurations to accommodate different board densities. The 305 series is characterized by its use of thermoplastic insulators and gold-plated contacts, ensuring consistent performance in demanding environments. It serves as a modular solution for connecting edge-board modules to backplanes or chassis.

Edgeboard Connectors Replacement Considerations

Consult the EDAC 305 Series Ordering Guide for direct substitutes with differing position counts or termination styles. Verify mechanical dimensions and pinout compatibility before replacing with generic equivalents. No public confirmed substitute part numbers are identified in the provided documentation.