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Texas Instruments TL431BQLPE3 — Analog & Data Acquisition

TL431BQLPE3 Adjustable Shunt Reference, ±0.5%, TO-92-3

MPNTL431BQLPE3
Obsolete

Texas Instruments TL431BQLPE3, adjustable shunt voltage reference, ±0.5% tolerance, 100 mA output, 2.495 V to 36 V, TO-92-3 through-hole package, -40°C to 125°C.

$1.1000Ref. price · indicative, final on quote
Texas Instruments TL431BQLPE3 datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

TL431BQLPE3 specifications
ParameterValue
Output typeAdjustable
MountingThrough Hole
Reference typeShunt
Voltage - output36 V
Voltage - output (Min (Fixed))2.495V
Output current100 mA
Current - cathode700 µA
Operating temperature-40°C~125°C(TA)
PackageBulk
Tolerance±0.5%
CaseTO-226-3, TO-92-3 (TO-226AA)

Product details

Adjustable shunt reference in a TO-92-3 package

Its output is set with two external resistors to any voltage between 2.495 V and 36 V, and it can sink up to 100 mA of cathode current. The B-grade tolerance of ±0.5% makes this variant a tighter-accuracy pick over the standard ±1% or ±2% grades.

Through-hole form factor and temperature range

Housed in a TO-92-3 (TO-226AA) through-hole package, this part is suited for designs that avoid SMD assembly or where manual rework is common.

For BOM lines that still specify this exact order code, the only channel is the surplus and independent market.

Frequently asked questions

Is TL431BQLPE3 obsolete?

Yes, the TL431BQLPE3 is officially listed as Obsolete by Texas Instruments. No last-time-buy or successor is recorded.

What is the replacement for TL431BQLPE3?

No official replacement order code is documented. The TL431 family includes many active variants (e.g., TL431A, TL431B in SOT-23 or SOT-89 packages), but the exact through-hole TO-92-3 with ±0.5% tolerance may not have a direct pin-compatible drop-in. Verify the BOM footprint and tolerance requirements before selecting an alternate.

What is the difference between TL431 and TL431BQLPE3?

The base TL431 designation covers multiple grades, packages, and temperature ranges — the BQLPE3 suffix encodes the tighter tolerance, the package, and the temperature grade.