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Texas Instruments TL431LIBCDBZR — Analog & Data Acquisition

TL431LIBCDBZR Shunt Voltage Reference

MPNTL431LIBCDBZR
Active

Texas Instruments TL431LIBCDBZR, adjustable shunt voltage reference, ±0.5% tolerance, output 2.495V to 36V, 15 mA output, SOT-23-3, 0°C to 70°C.

$0.4900Ref. price · indicative, final on quote
Texas Instruments TL431LIBCDBZR 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

TL431LIBCDBZR specifications
ParameterValue
Output typeAdjustable
MountingSurface Mount
Reference typeShunt
Voltage - output36 V
Voltage - output (Min (Fixed))2.495V
Output current15 mA
Current - cathode1 mA
Operating temperature0°C~70°C(TA)
PackageTape & Reel (TR); Cut Tape (CT)
Tolerance±0.5%
CaseTO-236-3, SC-59, SOT-23-3

Product details

It sets a stable reference voltage anywhere from 2.495 V up to 36 V using two external resistors, with a guaranteed tolerance of ±0.5%.

SOT-23-3 package — board-fit reality

The SOT-23-3 (TO-236-3 / SC-59) footprint is a standard small-signal transistor land pattern. It sits flat on the board with no heatsink pad — the 15 mA maximum output current is the practical limit before self-heating drifts the reference.

That means TI is still manufacturing it, no last-time-buy notice has been issued, and it's safe to qualify into a new design or a production BOM. ROHS3 compliant, so no exemption expiry to track.

Frequently asked questions

Is TL431LIBCDBZR compatible with TL431?

Yes — the TL431LIBCDBZR is a drop-in functional equivalent to the standard TL431 in the same SOT-23-3 footprint, with the same adjustable shunt architecture and the same 2.495 V internal reference. The 'LI' suffix indicates a tighter ±0.5% tolerance bin versus the standard TL431's typical 1% or 2% grade.