305-078-521-208

Edgeboard Connectors Overview

The EDAC Inc. 305-078-521-208 is a standard card edge connector from the 305 series, designed for dual-edge board applications. It features 78 positions arranged in two rows with a contact spacing of 3.96 mm (0.156 inches) and a row spacing of 3.56 mm. The connector accepts printed circuit boards with a nominal thickness of 1.57 mm (0.062 inches). Constructed with copper alloy contacts featuring gold plating, it supports a current rating of 5 A. The housing is made of green thermoplastic polyester, offering an operating temperature range from -40°C to +105°C. It utilizes a solder lug termination type and is intended for panel mounting.

Edgeboard Connectors Feature Summary

• Dual-row configuration providing 78 connection points for high-density interface requirements
• Gold-plated copper alloy contacts ensure reliable electrical performance and corrosion resistance
• Thermoplastic polyester insulator body provides structural stability within specified thermal limits
• Panel mount design facilitates secure installation on chassis or enclosure surfaces

Edgeboard Connectors Applications

• High-density electronic interconnect systems requiring dual-edge card insertion
• Industrial control panels utilizing vertical mounting configurations
• Equipment chassis interfaces demanding robust thermal performance up to 105°C
• Standard card edge modules requiring precise 3.96 mm pitch alignment

Edgeboard Connectors Procurement Notes

Verify component authenticity by cross-referencing the manufacturer part number 305-078-521-208 with official EDAC documentation. Confirm that the specific ordering suffix matches the required termination style and contact plating specifications. Ensure compliance with RoHS3 regulations as indicated in official datasheets. Validate that the package quantity aligns with project requirements before finalizing acquisition orders.

Edgeboard Connectors Selection Notes

Select this connector when a dual-row card edge interface with 78 positions is required. The 3.96 mm pitch and 1.57 mm board thickness compatibility are critical constraints. Consider the vertical panel mount orientation and solder lug termination method during mechanical design. Verify that the 5 A current rating and -40°C to +105°C temperature range meet the operational environment demands of the target application.

Edgeboard Connectors Part Context

This component belongs to the EDAC 305 Series, which offers various position counts and mounting options for card edge applications. The series is characterized by its standardized 3.96 mm contact spacing and durable construction materials. The 305-078-521-208 variant specifically addresses high-pin-count needs within this family, maintaining consistent electrical and mechanical standards across the product line for interchangeable system design.

Edgeboard Connectors Replacement Considerations

Direct substitutes within the same series include parts with identical pin counts and pitch, such as 305-078-521-278. Verify that any replacement maintains the dual-row female configuration and gold plating specification. Ensure mechanical dimensions, particularly the 1.57 mm board thickness acceptance, remain compatible with existing PCB designs.