306-020-521-158

Overview

The EDAC Inc. 306-020-521-158 is a dual-edge female card edge connector featuring 40 positions arranged in two rows with a 0.156-inch (3.96mm) contact spacing. Designed for panel and through-hole mounting, it utilizes gold-plated cantilever contacts on a green thermoplastic polyester insulator. The unit accepts printed circuit boards with thicknesses ranging from 0.054 to 0.070 inches. It includes flange features for flush installation with top openings and 4-40 threaded inserts, operating within a temperature range of -40°C to 105°C.

Feature Summary

• Dual-edge female configuration with cantilever spring contacts for reliable board insertion
• Panel mount design incorporating flanges with top openings and 4-40 threaded inserts
• Gold-plated terminals ensuring corrosion resistance and stable electrical performance
• Thermoplastic polyester insulation supporting high-temperature operational environments

Applications

• Industrial control systems requiring robust panel-mounted interconnects
• Medical equipment utilizing standardized card edge interfaces
• Agricultural technology hardware demanding durable connection solutions
• Communication infrastructure modules needing secure signal routing

Procurement Notes

Verify the specific ordering suffix against official EDAC documentation to confirm exact pin count, plating thickness, and flange specifications. Ensure compatibility with target PCB dimensions and mounting hole patterns before procurement. Confirm RoHS compliance status and lead times directly with authorized distributors or the manufacturer. Cross-reference part numbers to avoid confusion with similar series variants that may differ in row configuration or contact material.

Selection Notes

Select this component when a dual-edge interface with substantial mechanical retention via threaded flanges is required. The 0.156-inch pitch accommodates standard board widths while providing ample spacing for signal integrity. Consider the through-hole termination method for applications prioritizing mechanical strength over surface area constraints. Evaluate the operating temperature range against environmental conditions to ensure long-term reliability without degradation of the insulating material or contact plating.

Part Context

This connector belongs to the EDAC 306 Series, a line of standard card edge connectors designed for general-purpose interconnect applications. The series offers various position counts and mounting options to suit diverse electronic assembly needs. Components in this family are engineered for durability and consistent electrical performance across industrial and commercial sectors, providing a versatile solution for vertical board connections.

Replacement Considerations

Direct substitutes within the same series include 306-007-521-158 and 306-030-521-158, which share identical pitch and mounting characteristics but differ in position count. Verify that alternative part numbers match the required 40-position configuration and dual-edge specification to maintain mechanical and electrical compatibility in existing designs.