306-021-521-158

Overview

The EDAC Inc. 306-021-521-158 is a dual female card edge connector designed for panel and through-hole mounting. It features 42 positions arranged in two rows with seven contacts per row, utilizing a 0.156-inch (3.96mm) contact spacing. The connector accepts printed circuit boards with a thickness ranging from 0.054 to 0.070 inches (1.37mm to 1.78mm). Constructed with copper alloy contacts featuring a gold plating thickness of 10.0µin (0.25µm), it ensures reliable signal transmission. The insulator body is made of thermoplastic polyester, colored green, and supports a wide operating temperature range from -40°C to 105°C.

Feature Summary

• Dual female configuration with cantilever contacts for secure board insertion
• Panel mount design with integrated card guides for alignment
• Gold-plated contacts ensure corrosion resistance and low contact impedance
• Thermoplastic polyester insulation provides thermal stability

Applications

• Industrial control systems requiring robust card edge interfaces
• Telecommunications equipment with high-density connection needs
• Test and measurement instrumentation boards
• Automotive electronics modules

Procurement Notes

Verify the specific ordering suffix matches the required pin count and spacing before purchase. Confirm that the PCB thickness falls within the specified 0.054 to 0.070 inch range to ensure proper mechanical fit. Check RoHS compliance status if environmental regulations apply to your assembly process. Ensure the mounting hole pattern aligns with the flange specifications for secure panel installation.

Selection Notes

Select this component when a dual-row female connector with 0.156-inch spacing is required. Consider the 42-position capacity for applications needing moderate I/O density. Evaluate the through-hole mounting option against surface-mount alternatives based on mechanical stress requirements. Verify that the green color coding meets any visual identification standards used in your manufacturing workflow.

Part Context

This part belongs to the EDAC 306 series of standard card edge connectors. The series is characterized by its use of cantilever contacts and various mounting options. The 306 series offers multiple position counts and spacing configurations to accommodate diverse board designs. This specific model represents a mid-range position count within the series, balancing connectivity density with physical footprint constraints.

Replacement Considerations

Direct substitutes may include other EDAC 306 series parts with identical spacing but different pin counts. Cross-brand replacements require matching the 0.156-inch pitch and dual-row female configuration. Verify that alternative components support the same PCB thickness range and operating temperature limits.