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Texas Instruments LM4040C25IDBZT — Analog & Data Acquisition

TI LM4040C25IDBZT Shunt Voltage Reference

MPNLM4040C25IDBZT
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Texas Instruments LM4040C25IDBZT, shunt voltage reference, fixed 2.5V output, ±0.5% tolerance, 15 mA output, 80 µA cathode, SOT-23-3, -40 to 85°C.

$1.5300Ref. price · indicative, final on quote
PackagingTO-236-3, SC-59, SOT-23-3
RoHSROHS3 Compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

LM4040C25IDBZT specifications
ParameterValue
Output typeFixed
MountingSurface Mount
Reference typeShunt
Voltage - output (Min (Fixed))2.5V
Output current15 mA
Current - cathode80 µA
Operating temperature-40°C~85°C(TA)
PackageTape & Reel (TR); Cut Tape (CT)
Tolerance±0.5%
CaseTO-236-3, SC-59, SOT-23-3
Noise - 10Hz to 10kHz35µVrms
Temperature coefficient100ppm/°C

Product details

2.5 V shunt reference in a SOT-23-3 — what it does and where it lands

The Texas Instruments LM4040C25IDBZT is a precision shunt voltage reference delivering a fixed 2.5 V output with ±0.5% initial tolerance. It operates as a two-terminal shunt (Zener-style) device, requiring only a cathode-to-anode connection with an external series resistor to set the bias current. The 80 µA minimum cathode current keeps the reference in regulation, while the 15 mA maximum output current defines the load it can drive directly. Typical applications include portable battery-powered instruments, industrial sensor excitation, data-acquisition front-ends, and as a stable reference for ADCs and DACs in mixed-signal circuits.

No last-time-buy risk or obsolescence pressure on this BOM line.

Frequently asked questions

What package does LM4040C25IDBZT come in?

It is supplied in a SOT-23-3 surface-mount package (also listed as TO-236-3 or SC-59). The shipping options include Tape & Reel and Cut Tape.

What is the current output capability of LM4040C25IDBZT?

The maximum output current is 15 mA, and the minimum cathode current required for regulation is 80 µA.