305-028-500-503

Edgeboard Connectors Overview

The EDAC Inc. 305-028-500-503 is a standard card edge connector from the 305 series, designed for dual-edge board applications. It features 28 positions with a contact spacing of 0.156 inches (3.96 mm) and a row spacing of 0.140 inches (3.56 mm). The connector accepts printed circuit boards with a nominal thickness of 0.062 inches (1.57 mm). It utilizes wire hole termination and gold-plated copper alloy contacts housed in a green thermoplastic polyester insulator. The unit 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 PCBs with nominal 0.062-inch thickness
• Gold-plated copper alloy contacts ensure reliable signal transmission and corrosion resistance
• Low-profile insulator body constructed from thermoplastic polyester for compact panel mounting
• Wire hole termination style provides secure solder pin connections for vertical installation

Edgeboard Connectors Applications

• Panel-mounted electronic assemblies requiring dual-edge card interface
• Industrial control systems utilizing standard thickness PCBs
• Communication equipment needing robust vertical interconnects
• Test and measurement devices requiring high-reliability card edge connections

Edgeboard Connectors Procurement Notes

Verify that the target application requires a dual-edge connector configuration rather than single-edge variants within the same series. Confirm that the PCB thickness aligns with the specified 0.062-inch nominal requirement to ensure proper mechanical engagement. Check regional availability status as distribution channels may indicate limited sales in specific territories. Ensure compliance with RoHS3 specifications if environmental regulations apply to the final assembly.

Edgeboard Connectors Selection Notes

Select this component when a dual-row interface is necessary for higher density connections on a single edge. The 0.156-inch pitch offers a balance between signal count and spacing compared to finer pitches. Consider the wire hole termination method if through-hole soldering processes are preferred over surface mount alternatives. Evaluate the 5 A current rating against the total load requirements of the connected circuitry to prevent overheating during operation.

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 electronics. The series offers various position counts and termination styles to suit different board densities. The 305-028-500-503 specifically addresses needs for moderate-density dual-edge connections with durable gold plating and thermoplastic insulation, fitting into standard panel mount configurations.

Edgeboard Connectors Replacement Considerations

Direct substitutes include other EDAC 305 series parts with identical 28-position dual-edge specifications but different termination or flange options. Cross-reference with similar dual-edge connectors from other manufacturers only if mechanical dimensions and electrical ratings match exactly. Verify that any alternative maintains the same 0.156-inch pitch and 0.062-inch board thickness compatibility.