3V shunt reference — key ratings at a glance
The LM4040EIZ-3.0/NOPB is a precision shunt voltage reference from TI's LM4040 family, delivering a fixed 3V output with ±2% initial tolerance. It operates as a two-terminal shunt (like a Zener), requiring only a series resistor from the supply to the cathode — no external bypass capacitor needed for stability. Noise is specified at 35 µVrms over a 10 Hz to 10 kHz bandwidth, and the temperature coefficient is 150 ppm/°C — adequate for 8- to 10-bit ADC references and general-purpose biasing in industrial control, data acquisition, and power supply feedback loops.
Through-hole TO-92-3 — hand-solder friendly, but plan for end-of-life
The TO-92-3 through-hole package (TO-226-3) is easy to hand-solder and fits standard prototyping grids.
Sourcing reality — no factory stock, quoted per RFQ
With an obsolete status, the LM4040EIZ-3.0/NOPB is no longer manufactured by TI. It is not held in factory stock.