LM185BYH-2.5/NOPB

Overview

The LM185BYH-2.5/NOPB is a micropower shunt voltage reference manufactured by Texas Instruments, designed for precision applications requiring stable voltage regulation. It operates within an extended industrial temperature range of -55°C to +125°C and utilizes a TO-46 hermetic metal can package suitable for through-hole mounting. The device provides a fixed nominal output voltage of 2.5 V with an initial accuracy of ±1.5% and a maximum shunt current of 20 mA. Its temperature coefficient is specified at ±30 ppm/°C, ensuring minimal drift over varying thermal conditions.

Feature Summary

• Provides a stable 2.5 V reference voltage with high initial accuracy
• Operates reliably across an extended industrial temperature range
• Features low temperature coefficient for precise thermal stability
• Utilizes a hermetic metal can package for robust environmental protection

Applications

• Precision analog-to-digital converter (ADC) reference sources
• High-stability power supply regulation circuits
• Industrial instrumentation requiring long-term drift compensation
• Military and aerospace electronic systems demanding radiation hardness

Procurement Notes

Verify the specific suffix 'BYH' against the official Texas Instruments datasheet to confirm the exact binning, tolerance class, and packaging configuration. Ensure that the procurement channel provides traceability documentation required for components intended for critical infrastructure or regulated industries. Confirm RoHS compliance status as indicated in the product specifications.

Selection Notes

Select this component when a fixed 2.5 V reference is required with superior thermal stability compared to standard zener diodes. The TO-46 package is preferred for applications necessitating hermetic sealing and high reliability under extreme environmental stress. Consider the ±1.5% initial accuracy and ±30 ppm/°C temperature coefficient against system budget requirements.

Part Context

This part belongs to the LM185 series of micropower shunt voltage references from Texas Instruments. The series is characterized by its use of bandgap technology to achieve low temperature coefficients and high stability. The LM185 family is widely recognized for its performance in demanding environments where standard silicon references may fail to maintain accuracy.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Verify compatibility with existing circuit designs before considering alternative manufacturers or pin-compatible devices.