305-074-521-258

Edgeboard Connectors Overview

The EDAC Inc. 305-074-521-258 is a standard card edge connector from the 305 series, designed for vertical panel mounting applications. It features a dual female configuration with 74 positions and a contact spacing of 0.156 inches (3.96 mm). The row spacing measures 0.140 inches (3.56 mm), accommodating printed circuit boards with a nominal thickness of 0.062 inches (1.57 mm). The contacts are constructed from copper alloy and finished with gold plating to ensure reliable signal transmission. This component supports a continuous current rating of 5 A and withstands 1800 VACrms dielectric voltage. The insulator body is made of thermoplastic material, providing durability in operating temperatures ranging from -40°C to +105°C.

Edgeboard Connectors Feature Summary

• Dual-edge female connector design accepting non-specified card types
• Gold-plated copper alloy contacts for corrosion resistance
• Low-profile insulator body construction
• Accepts between-contact and in-contact polarizing keys

Edgeboard Connectors Applications

• Industrial control systems requiring robust interconnects
• Telecommunications equipment backplanes
• Automotive electronics modules
• Test and measurement instrumentation

Edgeboard Connectors Procurement Notes

Verify that the specific part number matches the required position count and pitch specifications before integration. Confirm that the thermal environment remains within the -40°C to +105°C operational range. Ensure the PCB thickness aligns with the 1.57 mm nominal requirement for proper mechanical engagement. Check for any regional distribution restrictions or RoHS compliance documentation requirements relevant to your target market.

Edgeboard Connectors Selection Notes

Select this model when a high-density dual-row interface is necessary for vertical panel installation. The 3.96 mm pitch allows for substantial trace spacing compared to finer pitches. Consider the 5 A current rating for power distribution needs alongside signal lines. The green insulator color aids in visual identification during assembly. Verify compatibility with existing polarizing keying strategies if used in constrained spaces.

Edgeboard Connectors Part Context

This component belongs to the EDAC 305 Series, which offers various mounting styles and position counts. The series is characterized by its standardized 3.96 mm pitch and durable thermoplastic housing. Similar models in the lineup differ primarily in the number of positions and specific mounting configurations, such as surface mount versus panel mount variants.

Edgeboard Connectors Replacement Considerations

Direct substitutes must maintain the 74-position count, 3.96 mm pitch, and dual-row female configuration. Verify that alternative components support the same 1.57 mm board thickness and 5 A current rating. Cross-reference pinout assignments and mechanical dimensions to ensure panel cutout compatibility.