306-021-500-178

Overview

The EDAC Inc. model 306-021-500-178 is a standard card edge connector designed for through-hole mounting. It features a dual female configuration with 42 positions arranged in two rows, providing a total of 21 contacts per side. The connector utilizes a 0.156-inch (3.96 mm) contact spacing and accepts printed circuit boards with a nominal thickness of 0.062 inches (1.57 mm). Constructed with copper alloy contacts finished with gold plating, the unit ensures reliable electrical performance within an operating temperature range of -40°C to +105°C.

Feature Summary

• Dual-edge female contact design accommodating double-sided PCB insertion
• Gold-plated copper alloy contacts for enhanced conductivity and corrosion resistance
• Low-profile thermoplastic polyester insulator body for compact integration
• Through-hole termination method ensuring secure mechanical attachment

Applications

• Industrial control systems requiring robust board-to-board connections
• Telecommunications equipment utilizing standard card edge interfaces
• Test and measurement instrumentation with modular card architectures
• Automotive electronics assemblies demanding high reliability

Procurement Notes

Verify the specific ordering suffix against official EDAC documentation to confirm exact pin count, plating specifications, and mounting style. Ensure compatibility with target PCB thickness tolerances before procurement. Cross-reference manufacturer part numbers with distributor listings to confirm current availability status and regional distribution constraints.

Selection Notes

Select this component when a dual-edge female interface with 0.156-inch spacing is required for vertical or straight panel mounting applications. Confirm that the host system accommodates the specified 1.57 mm board thickness constraint. Evaluate thermal requirements against the -40°C to +105°C operational range to ensure environmental suitability for the intended deployment scenario.

Part Context

This component belongs to the EDAC 306 series of standard card edge connectors, characterized by single centerline row configurations and low-profile bodies. The series supports various position counts and mounting styles, serving as a foundational interconnect solution for general-purpose electronic assemblies requiring durable, solder-based termination methods.

Replacement Considerations

Consult official EDAC substitution guides for verified alternative part numbers within the 306 series. Ensure any substitute maintains identical 0.156-inch spacing, 42-position count, and dual female contact orientation.