837-028-500-204

Edgeboard Connectors Overview

The EDAC Inc. 837-028-500-204 is a high-temperature card edge connector from the 837 series, designed for reliable signal transmission in demanding environments. It features a dual-edge female receptacle configuration with 28 positions and a 0.156-inch (3.96mm) contact spacing. The connector utilizes copper alloy cantilever contacts with gold plating to ensure low resistance and durability. Constructed with a green diallyl phthalate (DAP) insulator, it supports PCB thicknesses ranging from 0.054 to 0.070 inches. Rated for operation between -40°C and 125°C, this through-hole component includes threaded M3 mounting posts for secure panel installation.

Edgeboard Connectors Feature Summary

• Dual-edge female receptacle design accommodates double-sided card edge connectors for increased I/O density.
• Threaded M3 mounting posts provide secure panel attachment with top-opening access for assembly.
• Gold-plated copper alloy cantilever contacts ensure stable electrical connection and corrosion resistance.
• Diallyl phthalate (DAP) insulator material offers high thermal stability and mechanical strength.

Edgeboard Connectors Applications

• Industrial control systems requiring high-temperature reliability
• Aerospace and defense electronic assemblies
• Test and measurement equipment interfaces
• Telecommunications infrastructure hardware

Edgeboard Connectors Procurement Notes

Verify that the specific part number matches the required dual-edge configuration and threaded mounting style. Confirm compatibility with the target PCB thickness range of 0.054 to 0.070 inches. Ensure the application environment remains within the specified operating temperature limits of -40°C to 125°C. Check for RoHS compliance requirements if applicable to the final product assembly.

Edgeboard Connectors Selection Notes

Select this connector when a robust, high-temperature solution is needed for double-sided card edge applications. The 0.156-inch pitch allows for standard board layouts while maintaining signal integrity. Consider the threaded mounting feature if vibration resistance and secure panel fixation are critical. Compare against single-edge variants if only one side of the card requires connection.

Edgeboard Connectors Part Context

This component belongs to the EDAC 837 High Temperature Series, which specializes in durable interconnects for harsh environments. The series offers various position counts and termination styles, including wire wrap and solder pin options. The 837-028-500-204 specifically addresses the need for dual-edge connectivity with secure mechanical fastening, distinguishing it from flush-mount or unthreaded counterparts in the same family.

Edgeboard Connectors Replacement Considerations

Direct substitutes within the EDAC 837 series include other 28-position dual-edge connectors such as 837-028-500-807, though mounting styles may differ. Verify that any replacement maintains the same 0.156-inch pitch and DAP insulator material. Cross-reference mating card edge specifications to ensure proper engagement depth and contact alignment.