Skip to main content
Log in
Texas Instruments TL431ACDBVRG4 — Analog & Data Acquisition

TL431ACDBVRG4 Shunt Regulator, 2.495 V Ref, ±1%, SOT-23-5

MPNTL431ACDBVRG4
End of Life

Texas Instruments TL431ACDBVRG4 adjustable shunt voltage reference, 2.495 V min output, ±1% tolerance, 100 mA output, SOT-23-5 package, 0°C to 70°C operating range.

Texas Instruments TL431ACDBVRG4 datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

TL431ACDBVRG4 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±1%
CaseSC-74A, SOT-753

Product details

Its minimum output voltage is fixed at 2.495 V, and with a ±1% tolerance grade, the output stays within 24.7 mV of the target at 25 °C — tight enough for precision bias supplies and error-amplifier references in switch-mode power supplies.

Output current and cathode current — sizing the load

Rated for 100 mA continuous output current, this shunt regulator can sink enough current to bias an optocoupler LED or power a small reference load. The minimum cathode current is 600 µA, which sets the floor for the bias resistor in the shunt path — below that the reference loses regulation.

SOT-23-5 package and tape-and-reel delivery

Housed in a SOT-23-5 package (SC-74A, SOT-753), the part is suited for compact surface-mount layouts.

Frequently asked questions

What is the difference between TL431ACDBVRG4 and TL431BCDBVRG4?

The primary difference is tolerance: TL431ACDBVRG4 is specified at ±1%, while the TL431BCDBVRG4 is specified at ±0.5% (per the TL431 family datasheet). Both are pin-compatible and share the same SOT-23-5 package and 2.495 V reference threshold. The B-grade is chosen when tighter output accuracy is needed.