305-056-556-268

Edgeboard Connectors Overview

The EDAC Inc. 305-056-556-268 is a standard card edge connector from the 305 Series, designed for dual-row board-to-board or backplane applications. It features a 3.96 mm (0.156 inch) contact pitch and accommodates printed circuit boards with a nominal thickness of 1.57 mm (0.062 inch). The component provides 56 positions with gold-plated copper alloy contacts to ensure reliable signal transmission. Rated for 5 A continuous current and 1800 VACrms insulation voltage, it operates within a temperature range of -40°C to +105°C. The unit utilizes a thermoplastic insulator body and supports straddle mount panel installation.

Edgeboard Connectors Feature Summary

• Accepts between-contact and in-contact polarizing keys for secure positioning
• Features a low-profile insulator body with card guide functionality
• Supports dual-edge read-out configuration for extended board connectivity

Edgeboard Connectors Applications

• Industrial control systems requiring robust backplane connections
• Telecommunications equipment utilizing dual-row card edge interfaces
• Test and measurement instruments needing high-density vertical mounting

Edgeboard Connectors Procurement Notes

Verify that the specific ordering suffix matches the required row spacing and mounting style. Confirm compatibility with the target PCB thickness of 1.57 mm before integration. Ensure that the selected variant meets the necessary environmental ratings for the intended operating temperature range. Cross-reference the manufacturer datasheet to validate electrical specifications against system requirements.

Edgeboard Connectors Selection Notes

Select this model when a dual-row configuration with a 3.96 mm pitch is required for high-current applications. Consider the straddle mount style if panel installation is preferred over board-level attachment. Evaluate the need for polarizing key acceptance if mechanical alignment is critical. Verify that the 5 A current rating aligns with the power distribution needs of the connected circuitry.

Edgeboard Connectors Part Context

This component belongs to the EDAC 305 Series, which offers various mounting options and position counts. The series is characterized by its standardized 3.96 mm pitch and durable construction suitable for demanding environments. Similar models in the lineup may differ in position count or specific mounting hardware but share core electrical characteristics.

Edgeboard Connectors Replacement Considerations

Direct substitutes within the same series include part numbers such as 305-054-556-278 or 305-040-520-268, provided the position count difference is acceptable. Verify that any replacement maintains the identical 3.96 mm pitch and 1.57 mm board thickness compatibility.