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Texas Instruments TL431AIDBVRG4 — Analog & Data Acquisition

TL431AIDBVRG4 Shunt Reference, ±1% Tolerance, SOT-23-5

MPNTL431AIDBVRG4
End of Life

Texas Instruments TL431AIDBVRG4, adjustable shunt voltage reference, ±1% tolerance, 100 mA output, 700 µA cathode current, SOT-23-5, -40°C to 85°C.

Texas Instruments TL431AIDBVRG4 datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

TL431AIDBVRG4 specifications
ParameterValue
Output typeAdjustable
MountingSurface Mount
Reference typeShunt
Voltage - output36 V
Voltage - output (Min (Fixed))2.495V
Output current100 mA
Current - cathode700 µA
Operating temperature-40°C~85°C(TA)
PackageTape & Reel (TR)
Tolerance±1%
CaseSC-74A, SOT-753

Product details

2.495 V bandgap anchor with ±1% tolerance

The ±1% tolerance on that reference voltage is the spec that decides whether your feedback loop holds the output within budget — for a 5 V rail, that's ±50 mV before any resistor divider error.

100 mA output, 700 µA minimum cathode current

Rated for 100 mA continuous output current, this part can drive the optocoupler LED in a secondary-side feedback loop or act as the shunt element in a linear regulator. The 700 µA minimum cathode current is the floor — below that the device drops out of regulation, so the bias resistor must be sized to keep at least 700 µA through the cathode at all load and line conditions.

Industrial temperature grade, SOT-23-5 package

The SOT-23-5 package (SC-74A, SOT-753) is a five-pin variant of the common SOT-23 — the pinout matches the industry-standard TL431 footprint, so it drops onto boards laid out for the generic part. The 'A' suffix flags the tighter ±1% grade versus the standard ±2% or ±0.5% options in the family.

No official successor exists — the TL431AIDBVRG4 is the current-production ±1% SOT-23-5 variant.

Frequently asked questions

Is TL431AIDBVRG4 a shunt reference?

Yes, the TL431AIDBVRG4 is a shunt voltage reference — it operates as a three-terminal programmable shunt regulator, sinking current from the cathode to anode to maintain the programmed output voltage.

What is the tolerance of TL431AIDBVRG4?

The TL431AIDBVRG4 carries a ±1% tolerance on the 2.495 V reference voltage, which is the tighter grade in the TL431 family compared to the standard ±2% variant.

What package is TL431AIDBVRG4 available in?

It comes in an SOT-23-5 surface-mount package, also designated as SC-74A or SOT-753. The tape-and-reel packaging is standard for automated pick-and-place assembly.