305-042-555-278

Edgeboard Connectors Overview

The EDAC Inc. 305-042-555-278 is a standard card edge connector from the 305 series, designed for dual-edge board applications. It features 42 positions arranged in a double row configuration with a 3.96 mm (0.156 inch) pitch. The connector utilizes female contacts made of copper alloy with gold plating and employs a half-beam contact type for secure mating. It supports panel mounting via flange features with a 3.25 mm diameter opening and accepts PCB thicknesses ranging from 1.37 mm to 1.78 mm. The housing is constructed from green thermoplastic polyester, ensuring compliance with RoHS3 standards.

Edgeboard Connectors Feature Summary

• Dual-row female contact configuration for dual-edge card connections
• Gold-plated copper alloy half-beam contacts for reliable signal transmission
• Panel mount design with specific flange dimensions for secure installation
• Thermoplastic polyester insulation material providing environmental stability

Edgeboard Connectors Applications

• Industrial control systems requiring robust card edge interfaces
• Telecommunications equipment utilizing dual-edge module architectures
• Test and measurement devices needing high-density connection points
• Automotive electronics modules demanding durable connector solutions

Edgeboard Connectors Procurement Notes

Verify that the specific suffix 278 corresponds to the required solder pin termination style and housing color variant as defined by EDAC documentation. Confirm that the 3.96 mm pitch and 42-position count align precisely with the target PCB layout. Ensure compatibility with the specified 1.37 mm to 1.78 mm board thickness range before finalizing procurement orders to prevent mechanical fitment issues.

Edgeboard Connectors Selection Notes

Select this component when a dual-row, 42-position interface is required for dual-edge boards. The 3.96 mm pitch offers a balance between density and spacing. Consider the panel mount flange requirements and the specific thermal operating range of -40°C to +105°C. Verify that the gold plating thickness meets the application's wear cycle expectations compared to alternative finishes in the 305 series.

Edgeboard Connectors Part Context

This part belongs to the EDAC 305 Series, which provides various mounting options and row configurations for card edge applications. The series is characterized by its standardized pitch and robust construction suitable for industrial environments. The 305-042-555-278 specifically represents a 42-position variant within this broader family of connectors.

Edgeboard Connectors Replacement Considerations

Cross-reference with other 305 series variants such as 305-042-520-202 or 305-042-500-504 if different termination styles or housing materials are acceptable. Ensure that any substitute maintains the 42-position count and 3.96 mm pitch to guarantee mechanical and electrical compatibility with existing designs.