The TL4050C50IDBZT is a shunt voltage reference with a fixed 5V output and ±0.5% tolerance. It uses a two-terminal shunt topology and comes in a SOT-23-3 package.
Shunt topology — what it means for your bias network
The load current plus cathode current must exceed 80 µA to maintain regulation. Total current through the device must stay under 15 mA.
Active production, no obsolescence worry
No NRND or EOL flags. It's also ROHS3 compliant, so it passes lead-free assembly requirements without exemption paperwork.