The TL431 Voltage Reference is a programmable precision voltage reference designed for use in a wide variety of applications. This specific version is a SOT-23-3 package, which includes three pins. This chip is RoHS-compliant and produced by Hottech. It features a voltage range of 2.5V to 36V, with accuracy of ±0.5% and temperature stability of 50ppm/°C. Voltage is programmed in with two external resistors, allowing for flexibility in applications requiring different output voltages.