306-028-521-103

Overview

The EDAC Inc. 306-028-521-103 is a dual-edge female card edge connector designed for panel mounting. It features 56 positions arranged in two rows with a 0.156-inch (3.96mm) contact spacing. The connector utilizes gold-plated cantilever contacts and a green thermoplastic polyester insulator. It accepts printed circuit boards with thicknesses ranging from 0.054 to 0.070 inches (1.37mm to 1.78mm). The unit operates within a temperature range of -40°C to 105°C and includes flange features for flush mounting.

Feature Summary

• Dual-edge female configuration with cantilever spring contacts for reliable board insertion
• Gold-plated terminals ensure stable electrical performance and corrosion resistance
• Thermoplastic polyester insulation provides structural integrity and thermal stability
• Panel mount design with flush-mounting flanges for secure mechanical installation

Applications

• Industrial control system backplanes
• Telecommunications equipment interconnects
• Medical device internal circuit connections
• Consumer electronics motherboard interfaces

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official 306 Series Ordering Guide to confirm exact pin count, plating thickness, and flange specifications. Ensure compatibility with the target PCB thickness range of 0.054 to 0.070 inches. Confirm that the required operating temperature range aligns with the component's rated -40°C to 105°C specification before finalizing procurement orders.

Selection Notes

Select this component when a dual-sided connection is required for standard thickness circuit boards. The 0.156-inch spacing suits applications where higher current capacity or robust mechanical retention is prioritized over high-density miniaturization. Consider the panel mount requirement and available front-access space for mating connectors during the mechanical layout phase.

Part Context

This part belongs to the EDAC 306 series of card edge connectors, which are engineered for general-purpose industrial and commercial applications. The series offers various position counts and termination styles, providing a standardized solution for vertical board-to-board or board-to-panel interconnections in electronic assemblies requiring durable mechanical coupling.

Replacement Considerations

Direct substitutes include other EDAC 306 series variants with matching 56-position dual-edge configurations and identical 0.156-inch spacing. Verify that alternative parts maintain the same cantilever contact type and panel mount flange dimensions to ensure mechanical interchangeability without redesigning the host enclosure.