305-076-556-208

Edgeboard Connectors Overview

The EDAC Inc. 305-076-556-208 is a standard card edge connector from the 305 series, designed for dual-edge card applications. It features 76 positions with a 3.96 mm (0.156 inch) pitch and accommodates board thicknesses between 1.37 mm and 1.78 mm. The connector utilizes gold-plated copper alloy contacts with a 10.0 µin (0.25 µm) plating thickness and half-spring contact types. Rated for 5 A continuous current and 1800 VACrms insulation voltage, it operates within a temperature range of -40°C to +105°C. The housing is green thermoplastic polyester, and it supports panel mount installation with vertical orientation.

Edgeboard Connectors Feature Summary

• Accepts between-contact and in-contact polarizing keys for secure positioning
• Features half-spring contact type for reliable signal transmission
• Constructed with gold-plated copper alloy contacts for corrosion resistance
• Designed for dual-edge card insertion with vertical panel mounting

Edgeboard Connectors Applications

• High-density electronic interconnect systems
• Industrial control panels requiring polarized keying
• Telecommunications equipment backplanes
• Test and measurement instrumentation interfaces

Edgeboard Connectors Procurement Notes

Verify the specific ordering suffix against the manufacturer's official datasheet to ensure compatibility with required polarizing keys and mounting hardware. Confirm that the thermal rating of 105°C meets the operational environment requirements. Check for RoHS compliance status as per the latest regulatory updates. Ensure the selected variant matches the intended dual-edge card thickness specifications before finalizing procurement orders.

Edgeboard Connectors Selection Notes

Select this component when high pin count density is required alongside robust mechanical retention. The 3.96 mm pitch allows for substantial trace spacing compared to finer pitches. Consider the 5 A current rating for power distribution needs within the connector interface. Verify that the vertical panel mount style aligns with the chassis design constraints and available mounting space for the flange features.

Edgeboard Connectors Part Context

This part belongs to the EDAC 305 series of standard card edge connectors, which are widely used in industrial and commercial applications. The series offers various position counts and mounting styles. The 305-076-556-208 specifically addresses the need for higher connectivity in a compact form factor while maintaining high reliability through its gold-plated contacts and durable thermoplastic housing materials.

Edgeboard Connectors Replacement Considerations

No direct public substitute part numbers are confirmed for this specific model. Cross-reference with other EDAC 305 series variants if position count or pitch adjustments are permissible. Ensure any alternative maintains the same 3.96 mm pitch and dual-edge compatibility to preserve mechanical and electrical interface integrity.