305-078-555-503

Edgeboard Connectors Overview

The EDAC Inc. 305-078-555-503 is a standard card edge connector from the 305 Series, designed for panel mounting applications. It features 78 positions arranged in a dual-row configuration with a contact spacing of 3.96 mm (0.156 inches) and a row spacing of 3.56 mm (0.140 inches). The connector accepts printed circuit boards with a nominal thickness of 1.57 mm (0.062 inches), accommodating a range between 1.37 mm and 1.78 mm. Contacts are constructed from copper alloy with gold plating to ensure reliable signal transmission. The housing is made of green thermoplastic material, providing insulation resistance of 5 GOhms. It supports a current rating of 5 A and operates within a temperature range of -40°C to +105°C.

Edgeboard Connectors Feature Summary

• Dual-edge female connector design accommodates non-specified dual-edge PCBs for versatile board integration.
• Low-profile insulator body reduces overall assembly height while maintaining structural integrity.
• Gold-plated copper alloy contacts provide durable electrical connections with high corrosion resistance.
• Panel mount installation style ensures secure positioning and alignment during system assembly.

Edgeboard Connectors Applications

• Industrial control systems requiring robust panel-mounted interconnects
• Telecommunications equipment utilizing dual-edge card architectures
• Test and measurement devices needing high-density signal routing
• Automotive electronics operating within specified thermal ranges

Edgeboard Connectors Procurement Notes

Verify that the target application requires a dual-edge card interface compatible with the 3.96 mm pitch specification. Confirm that the PCB thickness falls within the 1.37 mm to 1.78 mm acceptance range to ensure proper mechanical engagement. Check environmental requirements against the -40°C to +105°C operating temperature limit. Ensure the selected variant matches the green thermoplastic housing material if color coding is critical for identification. Review datasheet specifications for exact pinout and mating force requirements before finalizing procurement.

Edgeboard Connectors Selection Notes

Select this component when a high-position-count connector is needed for dual-edge PCBs with a 3.96 mm spacing. Consider the 5 A current rating and 5 GOhm insulation resistance for standard industrial signaling loads. Choose this model over single-row variants if higher density per unit length is required. Evaluate the panel mount orientation against available chassis space constraints. Compare against other 305 Series parts if different position counts or housing materials are preferred for specific environmental conditions.

Edgeboard Connectors Part Context

This part belongs to the EDAC 305 Series, a line of standard card edge connectors known for their reliability in demanding environments. The series offers various position counts and configurations to support diverse electronic packaging needs. The 305-078-555-503 specifically addresses applications requiring 78 positions with dual-edge compatibility. Its design emphasizes low profile and secure panel mounting, making it suitable for dense electronic assemblies where space efficiency and connection stability are prioritized.

Edgeboard Connectors Replacement Considerations

Direct substitutes within the 305 Series include parts with identical 78-position dual-edge configurations but differing suffix codes for variations in housing material or contact finish. Verify that any replacement maintains the 3.96 mm pitch and 1.57 mm board thickness compatibility. Cross-reference with EDAC's ordering guide to confirm equivalent mechanical dimensions and electrical ratings before substitution.

Edgeboard Connectors FAQ

What is the maximum operating temperature for this connector?

The maximum operating temperature is +105°C, with a minimum operating temperature of -40°C.

Does this connector support single-edge PCBs?

No, this is a dual-edge connector designed specifically for non-specified dual-edge printed circuit boards.

What is the contact spacing and row spacing?

The contact spacing is 3.96 mm (0.156 inches), and the row spacing is 3.56 mm (0.140 inches).