91921-31151LF Connectors, Interconnects

Rectangular connectors - arrays, edge type, mezzanine (board to board) are essential components that are used in many electronic devices. The 91921-31151LF application field and working principle are designed to meet the space and power requirements of these large device assemblies. This article provides a comprehensive overview of the 91921-31151LF edge array, its application and working principle.

Specifications and Construction

The 91921-31151LF edge array is a two-row connector with 64 contacts each. This connector is designed with a pitch of 0.100" between contacts. It is constructed with a plastic body and a stamped metallic contact block that is soldered directly to the board. Both rows are numbered from 1 to 64 and the connector has a key on one end of the array that will ensure that the array is inserted in the correct manner during assembly. This key is most commonly a tab-like protrusion that will need to be aligned with a notched hole in the mating connector.

Applications

The 91921-31151LF edge array is designed for use in device applications where size and power requirements must be met. The edge array allows for a large number of contacts to be mounted where traditionally larger connectors would need to be used. These include applications in computers, medical systems, auto parts, and other large devices. The 91921-31151LF is also designed to meet the requirements of MIL-E-5400 Class III specifications and is suitable for installation in rugged environments.

Working Principle

The 91921-31151LF edge array works by providing a connection between two boards that house the appropriate number of contacts styled into the array. When the array is inserted onto the mating connector, the foam contact seals will provide a secure connection and reduce any potential electrical cross talk or contact noise. The copper alloys used in these contacts are designed to provide low contact resistance while maintaining high oxidation resistor. The plastic housing is designed to dissipate the heat created when power is applied.

Conclusion

The 91921-31151LF edge array is ideal for applications that need a connector that can provide a large number of contacts in a small space. This device has a proven track record for reliability, and can be used in a wide variety of applications. This product is fully compliant with military specifications and is well-suited for use in rugged applications. By utilizing the 91921-31151LF edge array, engineers and designers can create powerful, reliable devices and systems.