305-070-521-278

Edgeboard Connectors Overview

The EDAC Inc. 305-070-521-278 is a standard card edge connector from the 305 series, designed for panel mount and through-hole installation. It features 70 positions with a dual female contact configuration and a 3.96 mm (0.156 inch) pitch. The connector utilizes gold-plated copper alloy contacts and a thermoplastic polyester insulator body. It supports a continuous current rating of 5 A and accepts printed circuit boards with thicknesses ranging from 1.37 mm to 1.78 mm (0.054 to 0.070 inches). The unit operates within a temperature range of -40°C to +105°C.

Edgeboard Connectors Feature Summary

• Accepts between-contact and in-contact polarizing keys for secure board alignment
• Features a low-profile insulator body with vertical mounting orientation
• Utilizes half-beam contact type for reliable signal transmission

Edgeboard Connectors Applications

• Industrial control systems requiring high-density interconnects
• Communication equipment backplanes
• Medical device internal circuitry
• Energy sector monitoring hardware

Edgeboard Connectors Procurement Notes

Verify the specific ordering suffix against the official EDAC 305 Series Ordering Guide to ensure correct flange and termination specifications. Confirm that the required polarizing key compatibility matches the application design. Check RoHS compliance status directly on the manufacturer datasheet prior to procurement. Ensure the selected variant aligns with the intended PCB thickness and panel mounting requirements.

Edgeboard Connectors Selection Notes

Select this component when a 70-position dual-edge connector is required for vertical panel mounting applications. The 3.96 mm pitch accommodates standard industrial board layouts. Consider the 5 A current rating and -40°C to +105°C operating range for environmental suitability. Verify the need for polarizing key acceptance if mechanical locking is required for the specific assembly.

Edgeboard Connectors Part Context

This part belongs to the EDAC 305 series of standard card edge connectors, which are engineered for robust performance in demanding environments. The series offers various position counts and termination options while maintaining consistent electrical characteristics. EDAC, now part of Northern Technologies, provides these connectors for global industrial and commercial applications.

Edgeboard Connectors Replacement Considerations

Consult the EDAC 305 Series Ordering Guide for direct substitutes with differing position counts or flange configurations. No cross-manufacturer equivalents are verified in public documentation.