305-056-556-201

Edgeboard Connectors Overview

The EDAC Inc. 305-056-556-201 is a standard card edge connector from the 305 series, designed for dual-sided board insertion. It features 56 positions with a contact spacing of 0.156 inches (3.96 mm) and a row spacing of 0.140 inches (3.56 mm). The connector accepts printed circuit boards with a nominal thickness of 0.062 inches (1.57 mm). It utilizes gold-plated copper alloy contacts rated for 5 A continuous current and offers an insulation resistance of 5 GOhms. Operating within a temperature range of -40°C to +105°C, it employs a solder pin termination style.

Edgeboard Connectors Feature Summary

• Accepts between-contact and in-contact polarizing keys for secure alignment
• Features a low-profile insulator body constructed from thermoplastic material
• Provides reliable electrical connection through gold-plated copper alloy contacts

Edgeboard Connectors Applications

• Rack and panel interconnect systems
• Industrial control modules requiring polarized card edge connections
• Electronic equipment utilizing standardized 305 series headers

Edgeboard Connectors Procurement Notes

Verify the specific ordering suffix against the manufacturer's official datasheet to ensure compatibility with required polarization keys and mounting configurations. Confirm that the thermal rating and current capacity align with the target application's operational environment. Cross-reference the package dimensions with the CAD model provided by EDAC Inc. to validate mechanical fitment before finalizing procurement orders.

Edgeboard Connectors Selection Notes

Select this component when a dual-sided card edge interface with polarizing key capability is required. The 3.96 mm pitch suits applications needing robust connectivity for thicker PCBs. Ensure the design accommodates the vertical panel mount style and solder pin termination method. Compare against other 305 series variants if different position counts or board thickness tolerances are necessary for the specific system architecture.

Edgeboard Connectors Part Context

This part belongs to the EDAC 305 series of standard card edge connectors, which are widely used in industrial and commercial electronics. The series is characterized by its ability to accept various polarizing keys and its compatibility with standard rack and panel mounting styles. It serves as a header component for mating with card-edge plugs, providing stable signal and power transmission in modular electronic assemblies.

Edgeboard Connectors Replacement Considerations

Compatible substitutes within the same family include 305-056-556-278 and 305-056-556-568. Verify that alternative part numbers maintain identical contact spacing, board thickness acceptance, and termination style to ensure mechanical and electrical interchangeability without redesigning the host PCB footprint.