5962-8759405XA

Voltage Reference Overview

The Texas Instruments 5962-8759405XA is a military-grade shunt voltage reference IC, internally identified as the LM185-1.2QML. It provides a fixed output voltage of 1.2V with an accuracy of ±1%. The device operates within a supply current range up to 20 mA and features a temperature coefficient of 50 ppm/°C. It is housed in a TO-46 metal can package (CFP style) and supports surface mount installation. The component is rated for an extended operating temperature range from -55°C to +125°C, ensuring reliability in harsh environments.

Voltage Reference Feature Summary

• Military-grade qualification for high-reliability applications
• Fixed 1.2V shunt voltage reference output
• High precision with ±1% initial accuracy
• Robust TO-46 metal can packaging

Voltage Reference Applications

• Precision analog-to-digital converter reference sources
• Calibration equipment voltage standards
• Harsh environment instrumentation systems
• Military aerospace power management circuits

Voltage Reference Procurement Notes

Verify that the specific ordering suffix matches the required military qualification level and package variant. Confirm that the TO-46 metal can form factor aligns with existing board layout constraints. Ensure thermal management strategies accommodate the self-heating effects inherent to shunt references at maximum operating currents. Validate that the supplier provides appropriate traceability documentation for defense or aerospace procurement requirements.

Voltage Reference Selection Notes

Select this component when a stable 1.2V reference is required in space-constrained military designs. The TO-46 package offers superior environmental sealing compared to standard plastic packages. Consider the 50 ppm/°C temperature coefficient for applications requiring moderate thermal stability without active compensation. Evaluate the 20 mA current limit against the total system load to prevent excessive power dissipation during operation.

Voltage Reference Part Context

This part belongs to the SN54/74 series of military logic and linear components, specifically utilizing the LM185 micropower voltage reference diode architecture. It represents a specialized variant designed for ruggedized electronics where standard commercial grade parts fail to meet durability standards. The numbering follows the DLA (Defense Logistics Agency) standardization format for cross-manufacturer compatibility.

Voltage Reference Replacement Considerations

Direct equivalents include other MIL-spec versions of the LM185-1.2QML. Verify pinout compatibility for the TO-46 configuration before substitution. Generic commercial 1.2V references lack the necessary temperature stability and radiation hardness for direct replacement in qualified military systems.