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Texas Instruments TL431BQDCKR — Analog & Data Acquisition

TL431BQDCKR Shunt Reference, ±0.5% Tolerance, SC-70-6

MPNTL431BQDCKR
Active

Texas Instruments TL431BQDCKR, adjustable shunt voltage reference, ±0.5% tolerance, 100 mA output, 2.495 V reference, SC-70-6 package, -40°C to 125°C.

$0.5000Ref. price · indicative, final on quote
Texas Instruments TL431BQDCKR datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

TL431BQDCKR 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~125°C(TA)
PackageTape & Reel (TR); Cut Tape (CT)
Tolerance±0.5%
Case6-TSSOP, SC-88, SOT-363

Product details

Why the ±0.5% tolerance matters for your reference rail

The TL431BQDCKR is an adjustable shunt voltage reference from Texas Instruments with a ±0.5% initial tolerance on the 2.495 V reference voltage. That ±0.5% is the spec that decides whether your ADC reference, power supply feedback divider, or comparator threshold stays within budget across temperature and load. The 100 mA output current capability means it can sink enough current to bias an optocoupler LED or power a small load directly, not just sit as a passive reference.

Industrial temperature range — no derating needed

The 700 µA minimum cathode current keeps the reference biased even in low-power sleep modes.

SC-70-6 footprint for tight boards

No last-time-buy math needed for new designs.

Frequently asked questions

Is TL431BQDCKR a direct replacement for TL431B?

Yes, the TL431BQDCKR is a specific variant of the TL431B family in an SC-70-6 package. The base product number is TL431, and the B-grade offers ±0.5% tolerance. It is functionally identical to other TL431B parts in different packages — the only difference is the footprint.

Is TL431BQDCKR obsolete?

No, it carries an active lifecycle status. No discontinuation notice has been issued. It remains a current-production part from Texas Instruments.

What package does TL431BQDCKR come in?

It is supplied in a 6-pin SC-70-6 (also called SOT-363) package. The supplier device package is SC-70-6.