305-078-556-268

Edgeboard Connectors Overview

The EDAC Inc. 305-078-556-268 is a standard card edge connector from the 305 Series, designed for dual-edge board insertion. It features 78 positions with a 3.96 mm (0.156 inch) pitch and a 3.56 mm row spacing. The connector supports printed circuit boards with a nominal thickness of 1.57 mm (0.062 inch). It utilizes gold-plated copper alloy contacts with a half-bead termination type for reliable solder pin connections. Rated for 5 A current, it operates within a temperature range of -40°C to +105°C and includes panel mount flanges with 4-40 threaded inserts.

Edgeboard Connectors Feature Summary

• Dual-row configuration with gold-plated copper alloy contacts for secure signal transmission
• Panel mount design featuring flanges with 4-40 threaded inserts for stable installation
• Compatible with 1.57 mm nominal thickness PCBs using half-bead solder pin termination

Edgeboard Connectors Applications

• Industrial control systems requiring robust panel-mounted interconnects
• Test and measurement equipment needing high-density dual-edge connections
• Telecommunications infrastructure utilizing standard card edge form factors

Edgeboard Connectors Procurement Notes

Verify the specific suffix code against the manufacturer's official ordering guide to confirm contact plating thickness and insulator color specifications. Ensure that the required PCB thickness aligns with the 1.57 mm nominal tolerance before procurement. Confirm that the panel mounting hole pattern matches the 4-40 threaded insert requirements specified in the mechanical drawings. Cross-reference the position count and series designation to avoid substitution errors within the 305 family.

Edgeboard Connectors Selection Notes

Select this component when a dual-row card edge connector with a 3.96 mm pitch is required for panel-mount applications. The 78-position count suits designs needing moderate density without excessive footprint. Consider the 5 A current rating and 105°C operating temperature for industrial environments. Verify that the target PCB thickness falls within the acceptable range for the half-bead contact engagement. Compare against other 305 Series variants if different position counts or mounting styles are needed.

Edgeboard Connectors Part Context

This part belongs to the EDAC 305 Series of standard card edge connectors, which offers various position counts and mounting options. The series is characterized by its thermoplastic insulator body and gold-plated contacts. Similar models include the 305-040-520-268 and 305-054-556-278, differing primarily in position count. The 305 Series provides a standardized solution for vertical panel mounting with consistent electrical and mechanical properties across the product line.

Edgeboard Connectors FAQ

What is the nominal thickness of the printed circuit board supported by this connector?

The connector accepts printed circuit boards with a nominal thickness of 1.57 mm (0.062 inch).

How are the contacts terminated on the connector?

The contacts use a solder pin termination type with a half-bead design for secure attachment to the panel.