The RS431 and RS432 device are three-terminal adjustable shunt regulators, with a guaranteed thermal stability over applicable temperature ranges.


The RS431 and RS432 device are three-terminal adjustable shunt regulators, with a guaranteed thermal stability over applicable temperature ranges. The output voltage can be set to any value between Vref (approximately 2.5V) and 36V with two external resistors. These devices have provides a very sharp turn-on characteristic, making these devices excellent replacement for Zener diodes in many applications.

Both the RS431 and RS432 devices are offered in two grades, with initial tolerances (at 25°C) of 0.5% and 1%, for A and B grade.


  • Reference Voltage Tolerance at 25°C

    0.5% (A Grade)

    1% (B Grade)

  • Programmable output voltage to 36V

  • Low dynamic output impedance 0.2Ω

  • Sink current capability of 0.5 to 100mA

  • Equivalent full-range temperature coefficient of 50ppm/°C typical

  • Temperature compensated for operation over full rated operating temperature range

  •  Low output noise voltage

  •  Fast turn on response

  •  Operation from -40°C to 85°C

  •  Lead-Free Packages: SOT23


  • Adjustable voltage and current referencing

  • Power supply

  • Zener replacement

  • Voltage monitoring

  • Comparator with integrated reference

  • As precision voltage reference

Pin configuration