305-078-556-204

Edgeboard Connectors Overview

The EDAC Inc. 305-078-556-204 is a standard card edge connector from the 305 series, designed for robust electronic interconnections. It features a dual-row configuration with 78 positions and a pitch of 3.96 mm (0.156 inches). The unit supports a PCB thickness of 1.57 mm and utilizes gold-plated copper alloy contacts to ensure reliable signal transmission. Rated for 5 A current, it employs a solder pin termination type for secure attachment. The housing is constructed from thermoplastic polyester, providing durability in demanding environments.

Edgeboard Connectors Feature Summary

• Dual-row architecture supporting high-density connections
• Gold-plated copper alloy contacts for corrosion resistance
• Thermoplastic polyester insulation for thermal stability
• Solder pin termination for secure PCB mounting

Edgeboard Connectors Applications

• Industrial control systems requiring reliable I/O interfaces
• Telecommunications equipment backplanes
• Test and measurement instrumentation modules
• Automotive electronics subsystems

Edgeboard Connectors Procurement Notes

Verify that the specific part number matches the required 78-position dual-row configuration before ordering. Confirm compatibility with the target PCB thickness of 1.57 mm to ensure proper mechanical fit. Check for RoHS compliance requirements if operating in regulated regions. Ensure the solder pin termination style aligns with the assembly process capabilities. Validate that the 3.96 mm pitch matches the design specifications.

Edgeboard Connectors Selection Notes

Select this component when a high-pin-count interface with a 3.96 mm pitch is necessary. The dual-row design maximizes connection density within a limited footprint. Gold plating is essential for applications requiring long-term reliability and low contact resistance. The vertical panel mount style suits chassis-based installations where board-to-board connectivity is not the primary goal.

Edgeboard Connectors Part Context

This connector belongs to the EDAC 305 series, which specializes in standard card edge connectors. The series offers various position counts and mounting styles to accommodate diverse design needs. The 305-078-556-204 specifically addresses the need for a 78-position interface with a 3.96 mm pitch, fitting into the broader category of industrial-grade interconnect solutions.

Edgeboard Connectors Replacement Considerations

Direct substitutes within the same series include parts with different position counts or mounting variations, such as the 305-072-520-204. Verify that any replacement maintains the 3.96 mm pitch and dual-row configuration to ensure mechanical and electrical compatibility without redesigning the PCB layout.