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Texas Instruments TL431BCDBZTG4 — Analog & Data Acquisition

TL431BCDBZTG4 Shunt Reference, ±0.5% Tolerance, SOT-23-3

MPNTL431BCDBZTG4
End of Life

Texas Instruments TL431BCDBZTG4, adjustable shunt voltage reference, ±0.5% tolerance, 100 mA output, SOT-23-3 package, 0°C to 70°C.

$0.4300Ref. price · indicative, final on quote
Texas Instruments TL431BCDBZTG4 datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

TL431BCDBZTG4 specifications
ParameterValue
Output typeAdjustable
MountingSurface Mount
Reference typeShunt
Voltage - output36 V
Voltage - output (Min (Fixed))2.495V
Output current100 mA
Current - cathode600 µA
Operating temperature0°C~70°C(TA)
PackageTape & Reel (TR)
Tolerance±0.5%
CaseTO-236-3, SC-59, SOT-23-3

Product details

±0.5% tolerance — the B-grade precision edge

The internal reference voltage is fixed at 2.495 V minimum, and the output can be adjusted up to 36 V using two external resistors.

100 mA cathode drive and 600 µA minimum current

Rated for 100 mA continuous cathode current, this shunt can drive an optocoupler LED in a primary-side feedback loop or bias a small load directly — enough headroom for most isolated supply designs.

Housed in a SOT-23-3 surface-mount package (also known as TO-236-3 or SC-59), this part shares a standard three-pin footprint common to many shunt references — no layout surprises.

Frequently asked questions

What is the tolerance of TL431BCDBZTG4?

The tolerance is ±0.5%, which is the B-grade precision level — tighter than the standard TL431 ±2% grade.

Can TL431BCDBZTG4 replace TL431?

Yes — the TL431BCDBZTG4 is a pin-compatible precision variant of the standard TL431.