LM431ACZ

Description：IC VREF SHUNT ADJ 2% TO92-3
Series：-
Mfr：onsemi
Package：Bulk

SKU:7a3198da3d14 Category: Voltage Reference Brand: onsemi

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Product introduction

LM431ACZ is listed in the Voltage Reference range at ChipApex. The manufacturer field lists onsemi. Its product description is IC VREF SHUNT ADJ 2% TO92-3. Review the specifications below when checking this part for your BOM.

Voltage Reference specifications for LM431ACZ

Description：IC VREF SHUNT ADJ 2% TO92-3
Series：-
Mfr：onsemi
Package：Bulk
Output Type：Adjustable
Voltage - Output (Min/Fixed)：2.5V
Voltage - Output (Max)：36 V
Current - Output：100 mA
Operating Temperature：-25°C ~ 85°C (TA)
Mounting Type：Through Hole
Package / Case：TO-226-3, TO-92-3 (TO-226AA)
Supplier Device Package：TO-92-3
Grade：-
Qualification：-

Voltage Reference datasheet and documents for LM431ACZ

LM431ACZ

Voltage Reference Overview

The LM431ACZ is a three-terminal adjustable shunt regulator manufactured by onsemi in a TO-92 package. It provides programmable output voltage from approximately 2.5 V to 36 V using two external resistors. The device features a typical dynamic output impedance of 0.2 Ω and operates with cathode currents between 1.0 mA and 100 mA. It maintains thermal stability over the -25 °C to +85 °C operating range, with a typical full-range temperature coefficient of 50 ppm/°C.

Voltage Reference Feature Summary

Programmable output voltage capability up to 36 V
Low dynamic output impedance for stable regulation
Temperature compensated operation across the rated range

Voltage Reference Applications

Shunt regulator circuits
Output control for three-terminal fixed regulators
High-current shunt regulator designs
Current limit or current source applications

Voltage Reference Procurement Notes

Verify component availability status before procurement as this specific part number may be discontinued. Confirm that the TO-92 bulk packaging aligns with assembly requirements. Ensure the -25 °C to +85 °C operating temperature range meets system specifications. Validate pinout compatibility with existing board layouts.

Voltage Reference Selection Notes

Select this component when an adjustable precision reference is required within the specified voltage range. Consider the 2% initial accuracy tolerance for general-purpose applications. Evaluate the thermal resistance and power dissipation limits for the intended enclosure environment. Compare against industrial grade variants if extended low-temperature performance below -25 °C is necessary.

Voltage Reference Part Context

This device belongs to the LM431 family of programmable shunt regulators. It serves as a direct replacement for Zener diodes in many applications due to its sharp turn-on characteristic. The LM431ACZ variant specifically denotes the 2% accuracy version within the standard commercial temperature range.