305-078-521-501

Edgeboard Connectors Overview

The EDAC Inc. 305-078-521-501 is a standard card edge connector from the 305 series, designed for panel mount applications. It features a dual female configuration with 78 positions and a 0.156-inch (3.96 mm) pitch. The connector supports board thicknesses ranging from 0.054 to 0.070 inches (1.37 mm to 1.78 mm). It utilizes gold-plated copper alloy contacts with a semi-bellows termination type and solder pin end connection. The housing is green thermoplastic polyester, rated for operation between -40°C and 105°C.

Edgeboard Connectors Feature Summary

• Dual female contact configuration for reliable signal transmission
• Semi-bellows contact design ensures secure mating force
• Panel mount installation with threaded flange features
• Gold-plated copper alloy contacts for corrosion resistance

Edgeboard Connectors Applications

• Industrial control systems requiring robust panel connections
• Telecommunications equipment backplanes
• Test and measurement instrumentation interfaces
• Automotive electronic module interconnects

Edgeboard Connectors Procurement Notes

Verify the specific ordering suffix against the manufacturer's current datasheet to ensure compatibility with required flange types and contact finishes. Confirm that the target PCB thickness falls within the specified 1.37 mm to 1.78 mm range. Check RoHS3 compliance status if environmental regulations apply to your assembly process. Ensure panel cutout dimensions match the mounting hole specifications provided in the official mechanical drawing.

Edgeboard Connectors Selection Notes

Select this component when a high-density dual-sided connection is required for vertical panel mounting. The 78-position count suits complex signal routing needs. Consider the semi-bellows contact style for superior vibration resistance compared to standard leaf spring designs. Verify that the 3.96 mm pitch aligns with the existing PCB layout constraints and that the operating temperature range meets the environmental demands of the deployment site.

Edgeboard Connectors Part Context

This part belongs to the EDAC 305 series of card edge connectors, which are engineered for demanding industrial environments. The series offers various position counts and mounting options to accommodate diverse system architectures. The 305-078 variant specifically addresses applications needing extensive I/O density in a compact panel-mounted form factor, ensuring stable electrical performance across wide temperature fluctuations.

Edgeboard Connectors Replacement Considerations

Direct substitutes may include other EDAC 305 series parts with identical 78-position dual female configurations and matching pitch. Verify mechanical compatibility, particularly regarding the M3 threaded flange feature and overall envelope dimensions. Cross-reference contact material and plating thickness to maintain equivalent electrical and durability characteristics.