3 V series reference in a SOT-23-3 — what it delivers
The Maxim Integrated MAX6103EUR+T is a series voltage reference that outputs a fixed 3 V with ±0.4% initial tolerance. It runs from a 3.2 V to 12.6 V input rail and draws 125 µA quiescent supply current — low enough that a battery-powered sensor node or portable instrument won't waste its energy budget on the reference alone. The SOT-23-3 package (TO-236-3 / SC-59 compatible) keeps board area tight, which matters when you're squeezing a precision reference next to an ADC or DAC in a mixed-signal channel.
5 mA output — sizing the load budget
The MAX6103EUR+T can source or sink up to 5 mA. The series topology means the output is low-impedance and stable with capacitive loads.