LM185BYH1.2-SMD

Overview

The LM185BYH-1.2-SMD is a micropower voltage reference diode manufactured by Texas Instruments, operating at a nominal output of 1.2V. It features an initial accuracy of ±0.5% and a temperature coefficient of 25 ppm/°C. The device supports a shunt current range from 10 µA to 20 mA and operates within a junction temperature range of -55°C to 125°C. Designed for high stability, it utilizes a TO-46-2 package suitable for through-hole mounting in precision applications.

Feature Summary

• Provides stable 1.2V reference with high initial accuracy
• Low temperature coefficient ensures thermal stability
• Micropower operation reduces system energy consumption

Applications

• Precision analog-to-digital converter references
• Battery-powered instrumentation systems
• High-resolution data acquisition circuits

Procurement Notes

Verify the specific suffix configuration against official datasheets to confirm pinout and tolerance grades. Ensure environmental compliance requirements match project specifications. Confirm package authenticity and handling procedures for sensitive semiconductor components during procurement.

Selection Notes

Select this component when precise low-voltage referencing is required with minimal power draw. Consider the TO-46-2 package constraints for board layout. Evaluate thermal management needs given the wide operating temperature range and self-heating characteristics under varying load currents.

Part Context

Part of the LM185/LM285/LM385 family of micropower zener references. This series is widely used in industrial and commercial electronics requiring reliable voltage standards. The BYH variant denotes specific accuracy and packaging options within the broader product line.

Replacement Considerations

LM285BYH-1.2 and LM385BYH-1.2 are functionally similar variants within the same manufacturer's portfolio. Cross-reference electrical parameters and package dimensions before substitution.