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Product Detailed Parameters
- Description：CONN EDGE DUAL FMALE 40POS 0.156
- Series：306
- Mfr：EDAC Inc.
- Package：Bulk
- Card Type：Non Specified - Dual Edge
- Gender：Female
- Number of Positions/Bay/Row：20
- Number of Positions：40
- Card Thickness：0.054" ~ 0.070" (1.37mm ~ 1.78mm)
- Number of Rows：2
- Pitch：0.156" (3.96mm)
- Read Out：Dual
- Features：Card Guides
- Mounting Type：Panel Mount, Through Hole
- Termination：Solder
- Contact Material：Copper Alloy
- Contact Finish：Tin
- Contact Finish Thickness：-
- Contact Type：Cantilever
- Color：Green
- Flange Feature：Flush Mount, Top Opening, Threaded Insert, 4-40
- Operating Temperature：-40°C ~ 105°C
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Overview
The EDAC Inc. 306-020-421-178 is a standard card edge connector from the 306 series, designed for dual-edge board applications. It features 40 positions with a 0.156-inch (3.96 mm) contact spacing. The connector accepts printed circuit boards with a thickness range of 0.054 to 0.070 inches (1.37 to 1.78 mm). It utilizes female contacts made of copper alloy with tin plating and employs a solder termination type. The housing is constructed from green thermoplastic polyester, providing insulation for vertical panel mount installation.
Feature Summary
- Dual-edge female connector design accommodating non-specified dual-edge PCBs
- Copper alloy contacts with tin plating for reliable signal transmission
- Thermoplastic polyester insulator body in green coloration
- Vertical panel mount configuration with solder termination
Applications
- Industrial control systems requiring dual-edge board interfaces
- Test and measurement equipment utilizing standard card edge modules
- Telecommunications hardware with vertical mounting constraints
Procurement Notes
Verify the specific pin count and contact spacing against system requirements before ordering. Confirm that the target PCB thickness falls within the specified 1.37 mm to 1.78 mm range to ensure proper mechanical engagement. Check regional availability as distribution status may vary by location. Ensure compatibility with existing panel mounting holes and thermal management needs during integration.
Selection Notes
Select this component when a dual-edge female connector with 40 positions is required. The 3.96 mm pitch suits applications needing wider spacing between signals. Tin-plated contacts offer cost-effective performance for general-purpose connections. Consider the vertical orientation and panel mount style if space efficiency and direct board insertion are priorities over surface-mounted alternatives.
Part Context
This part belongs to the EDAC 306 series of standard card edge connectors. The series offers various position counts and configurations for single and dual-edge applications. Components in this line typically feature robust thermoplastic housings and standardized contact spacings to ensure interoperability across different manufacturing platforms and industrial standards.
Replacement Considerations
Compatible substitutes include other EDAC 306 series parts with matching 40-position dual-edge specifications. Verify identical 3.96 mm pitch and compatible PCB thickness ranges when evaluating alternative part numbers from the same manufacturer or cross-brand equivalents.
