305-020-555-503

Edgeboard Connectors Overview

The EDAC Inc. 305-020-555-503 is a dual-edge female card edge connector from the 305 series, designed for board-to-board or backplane interconnections. It features 20 positions with a 0.156-inch (3.96 mm) pitch and two rows of contacts. The connector utilizes gold-plated copper alloy semi-crimped terminals to ensure reliable signal transmission. It is rated for a maximum operating temperature of 105°C and supports PCB thicknesses ranging from 0.054 to 0.070 inches. The housing is constructed from green thermoplastic polyester, providing durability and environmental resistance.

Edgeboard Connectors Feature Summary

• Dual-edge female configuration supporting non-specified double-sided cards
• Gold-plated copper alloy semi-crimped terminals for enhanced conductivity
• Thermoplastic polyester insulation housing for structural stability
• Panel mount installation style with solder termination

Edgeboard Connectors Applications

• Industrial control system circuit boards
• Telecommunications equipment backplanes
• Test and measurement instrument interfaces
• Computer peripheral expansion slots

Edgeboard Connectors Procurement Notes

Verify the specific ordering suffix against the manufacturer's official 305 Series Ordering Guide to confirm terminal plating thickness and flange characteristics. Ensure compatibility with the target PCB thickness range of 0.054 to 0.070 inches before procurement. Confirm RoHS3 compliance status if required by project specifications. Cross-reference the DigiKey part number 151-305-020-555-503-ND for accurate supply chain tracking.

Edgeboard Connectors Selection Notes

Select this component when a 20-position dual-row interface is required with a standard 0.156-inch pitch. The panel mount style is suitable for chassis integration rather than direct surface mounting. Verify that the application environment remains within the -40°C to 105°C operational temperature range. Consider the semi-crimped contact type for robust mechanical retention during mating cycles.

Edgeboard Connectors Part Context

This connector belongs to the EDAC 305 series, which offers a standardized lineup of card edge connectors. The series provides various position counts and mounting options to accommodate diverse electronic design requirements. The 305-020-555-503 variant specifically addresses applications needing a compact 20-pin interface with high reliability standards.

Edgeboard Connectors Replacement Considerations

Consult the EDAC 305 Series Ordering Guide for alternative part numbers with identical electrical and mechanical parameters. Verify pin count, pitch, and mounting style compatibility before substituting. No direct cross-manufacturer equivalents are confirmed in public documentation.