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2%, 1%, or 0.5% accuracy, adjustable precision Zener shunt regulator

Qty Price
1-9 $0.57
10-24 $0.50
25-99 $0.45
100-249 $0.39
250-499 $0.35
500-749 $0.27
750-999 $0.21
1000+ $0.18


  • Average Temperature Coefficient 50 ppm/°C
  • Temperature Compensated for Operation Over
    the Full Temperature Range
  • Programmable Output Voltage
  • Fast Turnon Response
  • Low-Output Noise
  • Low-Dynamic Output Impedance
  • Available in Space-Saving SOIC-8, SOT-23, and
    TO-92 Packages

Texas Instruments  LM431AIZ/NOPB

The LM431 is a 3-terminal adjustable shunt regulator with ensured temperature stability over the entire temperature range of operation. The output voltage may be set at any level greater than 2.5 V (VREF) up to 36 V merely by selecting two external resistors that act as a voltage divided network. Due to the sharp turnon characteristics this device is an excellent replacement for many Zener diode applications.

The LM431 is available in space-saving SOIC-8, SOT-23, and TO-92 packages.