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Texas Instruments TL431CLPR — Analog & Data Acquisition

TL431CLPR Shunt Reference, Adjustable 2.495V, ±2.2%, TO-92-3

MPNTL431CLPR
Active

Texas Instruments TL431CLPR adjustable shunt voltage reference, TO-92-3 through-hole package, 2.495 V minimum output, 36 V maximum, ±2.2% tolerance, 100 mA output current, 0°C to 70°C operating temperature, RoHS3 compliant.

$0.1088Ref. price · indicative, final on quote
Texas Instruments TL431CLPR datasheet (PDF)
PackagingTO-226-3, TO-92-3 (TO-226AA) Formed Leads
RoHSROHS3 Compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

TL431CLPR specifications
ParameterValue
Output typeAdjustable
MountingThrough Hole
Reference typeShunt
Voltage - output36 V
Voltage - output (Min (Fixed))2.495V
Output current100 mA
Current - cathode1 mA
Operating temperature0°C~70°C(TA)
PackageTape & Reel (TR); Cut Tape (CT)
Tolerance±2.2%
CaseTO-226-3, TO-92-3 (TO-226AA) Formed Leads

Product details

Adjustable shunt reference for precision bias and regulation

It sinks up to 100 mA and operates with a cathode current as low as 1 mA, making it a flexible building block for precision regulators, error amplifiers, and overvoltage protection circuits in commercial-temperature equipment (0°C to 70°C). The ±2.2% tolerance is the standard commercial grade — adequate for general-purpose supplies and bias rails where tighter precision is not required. The TO-92-3 through-hole package suits prototyping, legacy board repairs, and designs where surface-mount is not preferred.

The 36 V maximum output voltage covers common intermediate rails without needing a separate higher-voltage reference. The 100 mA sink capability is the total current the shunt can draw to maintain regulation.

It is RoHS3 compliant.

Commercial temperature grade — indoor use only

It is not qualified for automotive under-hood, outdoor telecom cabinets, or industrial motor drives where the ambient exceeds 70°C or dips below freezing.

Frequently asked questions

What is the closest functional second-source for TL431CLPR — the LM4132AMF-4.1/NOPB?

The LM4132AMF-4.1/NOPB is a series voltage reference with a fixed 4.096 V output, ±0.05% tolerance, and surface-mount SOT-23 package. It is not a pin-compatible or functional replacement for the TL431CLPR, which is an adjustable shunt reference in a through-hole TO-92-3 package. The two parts serve different circuit roles — the TL431 is for shunt regulation; the LM4132 is a series reference for precision bias. No direct second-source exists for the TL431CLPR, but the TL431 family is widely second-sourced by multiple manufacturers (e.g., ON Semiconductor, STMicroelectronics) with identical pino