305-078-521-502

Edgeboard Connectors Overview

The EDAC Inc. 305-078-521-502 is a standard card edge connector from the 305 series, designed for panel mount applications. It features a dual female configuration with 78 positions arranged in two rows of 39 contacts each. The connector utilizes a 0.156-inch (3.96 mm) pitch and accepts board thicknesses ranging from 0.054 to 0.070 inches (1.37 mm to 1.78 mm). Contacts are constructed from copper alloy with gold plating and terminate via solder pins. The housing is made of green thermoplastic polyester, supporting an operating temperature range of -40°C to 105°C.

Edgeboard Connectors Feature Summary

• Dual-edge female contact configuration for robust signal transmission
• Gold-plated copper alloy contacts ensure reliable conductivity
• Thermoplastic polyester housing provides thermal stability
• Panel mount design with vertical orientation

Edgeboard Connectors Applications

• Industrial control system interconnections
• Telecommunications equipment backplanes
• Test and measurement instrument interfaces
• Automotive electronics modules

Edgeboard Connectors Procurement Notes

Verify the specific suffix codes against the manufacturer's official ordering guide to confirm exact pin count, termination style, and flange specifications. Ensure compatibility with target PCB thickness and mounting requirements before procurement. Cross-reference datasheet revisions to confirm material compliance and environmental ratings.

Edgeboard Connectors Selection Notes

Select this component when high-density connections are required on thick circuit boards. The 3.96 mm pitch accommodates larger trace widths compared to finer pitches. Verify that the panel mount style aligns with the mechanical enclosure design. Confirm that the current rating meets the application's electrical load requirements.

Edgeboard Connectors Part Context

This part belongs to the EDAC 305 series of card edge connectors, which are engineered for high-reliability applications. The series offers various position counts and termination options. The 305-078 variant specifically addresses needs for higher channel counts within the standard 3.96 mm pitch family, providing a balance between density and mechanical strength.

Edgeboard Connectors Replacement Considerations

Direct substitutes include other EDAC 305 series parts with matching 78-position dual-edge configurations. Verify identical pitch, board thickness tolerance, and termination type. Alternative manufacturers may offer similar specs but require mechanical fit verification.