837-072-521-812

Edgeboard Connectors Overview

The EDAC Inc. 837-072-521-812 is a standard card edge connector featuring 72 positions in a dual-row configuration. It utilizes a 0.156-inch (3.96mm) contact spacing and employs wire wrap termination for secure circuit attachment. The connector includes green DAP insulators with 0.170-inch offsets and accepts non-specified single-sided cards. Contact surfaces are gold-plated to ensure reliable signal transmission, while the tails feature tin plating over nickel underplating for soldering integrity.

Edgeboard Connectors Feature Summary

• Dual-edge female contact design accommodates non-specified single-sided card edges for versatile board integration.
• Wire wrap termination method provides robust mechanical and electrical connections without requiring soldering at the contact interface.
• Gold plating on mating areas ensures low contact resistance and durable performance in high-cycle applications.
• Green DAP insulator material offers thermal stability and structural support within the specified operating temperature range.

Edgeboard Connectors Applications

• High-temperature industrial control systems requiring stable interconnects
• Telecommunications equipment utilizing standard card edge modules
• Automotive electronics assemblies demanding reliable signal routing
• Aerospace and defense instrumentation with strict environmental compliance

Edgeboard Connectors Procurement Notes

Verify that the specific suffix matches the required tail length and plating configuration, as variations exist within the 837 series. Confirm RoHS3 compliance status if restricted substances are prohibited in your assembly process. Ensure the receiving facility has appropriate wire wrap tools compatible with the terminal specifications. Cross-reference the official datasheet for exact dimensional tolerances before finalizing procurement orders.

Edgeboard Connectors Selection Notes

Select this component when a dual-row connection is necessary for high-density signal routing on single-sided boards. The wire wrap termination is ideal for prototyping or environments where frequent disconnection is not required but vibration resistance is critical. Consider the 0.156-inch pitch for compatibility with existing backplane standards. Evaluate the thermal rating against the operational environment to ensure the DAP insulator remains within safe limits.

Edgeboard Connectors Part Context

This part belongs to the EDAC 837 High Temperature Series, designed for demanding electronic environments. The series emphasizes durability and thermal resilience, making it suitable for applications exceeding standard commercial temperature ranges. The 837 model line supports various pin counts and row configurations, providing engineers with scalable connectivity solutions for complex circuit board architectures.

Edgeboard Connectors Replacement Considerations

Direct substitutes within the same series include parts like 837-072-542-858, which shares similar physical dimensions but may differ in termination style. Verify that any replacement maintains the dual-row format and compatible card thickness specifications. Always confirm that the alternative part number retains the required gold plating on contacts and tin plating on tails to ensure equivalent electrical performance.