The SN431 series are 3-terminal precision shunt regulators that are programmable over a wide voltage range of 2.495V to 36V with ±0.5%, ±1.0% tolerance. The SN431 series have a low dynamic impedance of 0.15Ω. These features make the SN431 series an excellent replacement for zener diodes in numerous applications circuits that require a precision reference voltage.
