The REF1941AIDDCT from Texas Instruments is a series voltage reference Integrated Circuit with a fixed 4.096 V output, ±0.1% accuracy and 20 mA current, in a SOT-23-THIN package; the short listing gives SOT23-5.
The REF1941AIDDCR from Texas Instruments is a series voltage reference Integrated Circuit with a fixed 4.096 V output, ±0.1% accuracy and a 20 mA rating, in a SOT-23-THIN (SOT23-5) package.