LM336Z-5.0/T7

Overview

The LM336Z-5.0/T7 is a precision shunt voltage reference integrated circuit manufactured by National Semiconductor, now part of Texas Instruments. It provides a fixed output voltage of 5V with a tolerance of ±2%. The device operates within a current range of 600µA to 10mA and features a low temperature coefficient of 20ppm/°C. Packaged in a TO-92-3 through-hole case, it serves as a stable reference for analog circuits.

Feature Summary

• Provides a fixed 5V reference voltage with ±2% initial accuracy
• Features a low temperature coefficient of 20ppm/°C for thermal stability
• Operates as a shunt regulator with a wide working current range from 600µA to 10mA
• Utilizes a three-pin TO-92 through-hole package for standard mounting

Applications

• Precision power supply regulation
• Analog-to-digital converter reference sources
• Comparator threshold setting
• Battery testing equipment references

Procurement Notes

Verify the manufacturer designation carefully, as National Semiconductor was acquired by Texas Instruments. Ensure the suffix /T7 corresponds to the required tape-and-reel packaging format rather than bulk. Confirm RoHS compliance status for the specific production lot if environmental regulations apply to your assembly process.

Selection Notes

Select this component when a fixed 5V reference is required with moderate precision. The ±2% tolerance is suitable for general-purpose applications but may require external trimming for higher accuracy needs. Consider the TO-92 package constraints for thermal management and board space compared to surface-mount alternatives.

Part Context

This device belongs to the LM336 series of two-terminal zener diode references. It functions similarly to a zener diode but offers significantly better temperature stability and lower dynamic impedance. The series includes adjustable versions and other fixed voltages, providing flexibility for various reference requirements in mixed-signal designs.

Replacement Considerations

The LM336Z-5.0/NOPB is a direct functional replacement offering improved ±1% accuracy and extended temperature range. For identical specifications from Texas Instruments, verify availability of the LM336Z-5.0 variant. Other manufacturers offer pin-compatible equivalents such as the TL431 family, though topology differs.