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Texas Instruments ATL431LIAIDBZR — Analog & Data Acquisition

ATL431LIAIDBZR Shunt Voltage Reference, Adjustable 2.5V–36V

MPNATL431LIAIDBZR
Active

Texas Instruments ATL431LIAIDBZR, adjustable shunt voltage reference, ±1% tolerance, 2.5V to 36V output, 15 mA output, 100 µA cathode current, SOT-23-3, -40°C to 85°C.

$0.5600Ref. price · indicative, final on quote
Texas Instruments ATL431LIAIDBZR datasheet (PDF)
PackagingTO-236-3, SC-59, SOT-23-3
RoHSROHS3 Compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

ATL431LIAIDBZR specifications
ParameterValue
Output typeAdjustable
MountingSurface Mount
Reference typeShunt
Voltage - output36 V
Voltage - output (Min (Fixed))2.5V
Output current15 mA
Current - cathode100 µA
Operating temperature-40°C~85°C(TA)
PackageTape & Reel (TR); Cut Tape (CT)
Tolerance±1%
CaseTO-236-3, SC-59, SOT-23-3

Product details

What this shunt reference does on your board

It holds the output at ±1% tolerance from a minimum of 2.5 V up to 36 V, sinking up to 15 mA with a cathode current floor of 100 µA. That 2.5 V minimum is the internal bandgap — set the output higher with two resistors.

Active lifecycle — no near-term LTB worry

The ATL431LIAIDBZR carries an Active status and is ROHS3 compliant.

SOT-23-3 footprint — drop-in for the TL431

The SOT-23-3 package (also listed as TO-236-3, SC-59) matches the industry-standard pinout for adjustable shunt references. The adjustable output means you keep the same resistor divider. The 100 µA minimum cathode current is lower than the 1 mA typical for many shunt references, which helps in low-power bias circuits.

Frequently asked questions

Is ATL431LIAIDBZR a drop-in replacement for TL431?

Yes, in the SOT-23-3 package the pinout is identical. The ATL431LIAIDBZR has a lower minimum cathode current (100 µA vs 1 mA typical for the TL431), which can be an advantage in low-power designs. The adjustable output range and resistor-divider configuration are the same.

Does ATL431LIAIDBZR come in tape and reel?

Yes, it is available in Tape & Reel (TR) and Cut Tape (CT) options. The SOT-23-3 package reels at standard 3000-piece quantities for pick-and-place.