LM336ZT

Overview

The LM336ZT is a precision shunt voltage reference diode manufactured by STMicroelectronics, housed in a TO-92-3 through-hole package. It provides a fixed output voltage of 2.49V with an initial accuracy tolerance of ±4.02%. The device operates within a temperature range of -40°C to +85°C and functions as a two-terminal integrated circuit similar to a Zener diode but with enhanced precision and low temperature coefficient characteristics for stable reference applications.

Feature Summary

• Provides a precise 2.49V reference voltage output
• Operates as a two-terminal shunt regulator
• Monolithic integrated circuit design
• Low temperature coefficient for stability

Applications

• Precision voltage reference circuits
• Analog-to-digital converter references
• Comparator reference voltages
• Battery monitoring systems

Procurement Notes

Verify the specific manufacturer origin, as the LM336ZT designation is historically associated with Texas Instruments while STMicroelectronics produces the LM336 series. Confirm RoHS compliance status and lead-free specifications against the current datasheet. Ensure the TO-92-3 package matches the required footprint. Check for obsolete status or active production lifecycle stages before finalizing procurement plans.

Selection Notes

Select this component when a stable 2.49V reference is required in a compact through-hole package. Consider the ±4.02% initial accuracy and temperature performance relative to application requirements. Compare against other LM336 variants if different voltage levels or tighter tolerances are needed. Verify thermal operating limits for the intended environment.

Part Context

The LM336 series comprises precision two-terminal voltage reference diodes available from multiple manufacturers including Texas Instruments and STMicroelectronics. These devices serve as drop-in replacements for standard Zener diodes in many applications, offering superior regulation and temperature stability. The LM336ZT specifically denotes the surface-mount or tape-and-reel variant of the TO-92 package version produced by STMicroelectronics.

Replacement Considerations

Direct substitutes include LM336Z-2.5/LFT1 from Texas Instruments. Other compatible parts may include LM236Z for lower temperature grade applications or MCP1525 for alternative packaging options. Verify pinout compatibility and electrical parameter equivalence before substitution.