TL431CLPRE3 Texas Instruments Integrated Circuit (TO-92) In Stock

Name: TL431CLPRE3
Brand: Texas Instruments
SKU: TL431CLPRE3
Availability: InStock

TL431CLPRE3 is an adjustable precision shunt voltage reference IC with 2.2% initial accuracy and output voltage range from 2.5V to 36V. Operates as a two-terminal programmable zener replacement in 3-pin TO-92 through-hole package. Available from Texas Instruments in stock with worldwide shipping.

OBSOLETEIntegrated CircuitVerified Jun 2026

Package / Visual Reference

TL431CLPRE3TO-92

Quick Facts

Manufacturer: Texas Instruments
Package: TO-92
Pin Count: 999
Lifecycle: OBSOLETE
Datasheet: TL431CLPRE3 Datasheet PDF
Category: Integrated Circuit
Price: From $0.0616(MOQ 250)
Temp Range: ?°C to 70.0°C
RoHS: Compliant
Lead Time: 3–7 business days
Shipping: DHL Express · Worldwide

What are the key features of TL431CLPRE3?

Adjustable output voltage from 2.5 V to 36 V with only 2 external resistors
2.2% initial accuracy over temperature for precise voltage regulation in feedback loops
Low cathode current from 1 mA enables use in low-power standby and reference circuits

What is TL431CLPRE3 used for?

TL431CLPRE3 is used as a programmable voltage reference and error amplifier in switched-mode power supply feedback circuits, where it sets the regulated output voltage with high accuracy. Its adjustable 2.5 V to 36 V range and low 1 mA operating current make it ideal for optocoupler-isolated feedback loops in flyback and buck converters. The TO-92 through-hole package also suits prototyping, legacy industrial power boards, and educational electronics kits requiring a reliable shunt reference.

What are the specifications of TL431CLPRE3?

Pbfree Code	Yes
Reach Compliance Code	Compliant
Date Of Intro	2017-07-09
YTEOL	0
Analog IC - Other Type	TWO TERMINAL VOLTAGE REFERENCE
JESD-30 Code	O-XBCY-T3
JESD-609 Code	e3
Number of Functions	1
Number of Outputs	1
Output Voltage-Max	2.55V
Output Voltage-Min	2.44V
Output Voltage-Nom	2.495V
Package Body Material	UNSPECIFIED
Package Shape	ROUND
Package Style	CYLINDRICAL
Surface Mount	NO
Technology	BIPOLAR
Temp Coef of Voltage-Max	92ppm/°C
Temperature Grade	COMMERCIAL
Terminal Finish	Matte Tin (Sn)
Terminal Form	THROUGH-HOLE
Terminal Position	BOTTOM
Trim/Adjustable Output	YES
Package	TO-92

Compliance & Regulatory

RoHS Status	Compliant
Lead-Free	Yes (Pb-Free)
ECCN	EAR99
HTS Code	8542.39.00.01

Where can I find the TL431CLPRE3 datasheet?

TL431CLPRE3 Datasheet Download

Official datasheet from Texas Instruments

What are equivalent replacements for TL431CLPRE3?

No known alternates. Submit an RFQ and our team can suggest alternatives.

Frequently Asked Questions

What output voltage range does TL431CLPRE3 support and how is it set?

TL431CLPRE3 supports an adjustable output voltage from 2.5 V to 36 V, programmed using 2 external resistors connected to its reference (REF) pin. With a 2.2% initial accuracy at a 2.495 V internal reference, it provides a stable and precise regulated voltage suitable for power supply feedback networks and analog voltage references.

How is TL431CLPRE3 used in isolated flyback power supply designs?

In isolated flyback converters, TL431CLPRE3 serves as the error amplifier on the secondary side, comparing the output voltage against its 2.495 V internal reference and driving an optocoupler. The optocoupler then modulates the primary-side PWM controller, achieving tight regulation within 2.2% accuracy across load and line variations from 5 V to 36 V output configurations.

What is the minimum cathode current for TL431CLPRE3 and how does it affect low-power circuit designs?

TL431CLPRE3 requires a minimum cathode current of approximately 1 mA to maintain regulation. This low threshold makes it suitable for standby-mode power supplies and low-power reference circuits where minimizing quiescent current consumption is important, such as in always-on 5 V USB charger standby rails or 12 V industrial sensor supplies.

Is TL431CLPRE3 RoHS-compliant and what package does it come in?

Yes, TL431CLPRE3 is Pb-free and RoHS-compliant (JESD-609 code e3, REACH Compliant). It is supplied in a 3-pin TO-92 through-hole plastic package, which is easy to hand-solder and well-suited for prototyping, repair boards, and through-hole industrial designs requiring a rugged, long-life shunt reference.

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Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.

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AvailabilityIn Stock

Reference Price (USD)

From $0.0616

Buy from 1pc · Factory-direct pricing

Qty.	Unit Price	Ext. Price
250+	$0.0823	$20.58
500+	$0.0777	$38.87
1000+	$0.0740	$73.97
2000+	$0.0709	$141.72
3125+	$0.0640	$200.00
4060+	$0.0616	$250.10

pcs

Unit price: $0.0823 · Total: $20.58

In Stock · 24h Response · Worldwide Shipping

Direct Contact

WhatsApp Inquiry Email RFQ

Lead Time3-7 business days

MOQFrom 1 piece

ShippingDHL / FedEx / UPS

OriginChina (Authorized)

Response within 24 hours · Worldwide shipping

“Response time is incredible — usually under 4 hours. They understand that production lines can't wait.”

James Wright

Supply Chain Director, CircuitPro Ltd, UK

TL431CLPRE3 Texas Instruments Integrated Circuit (TO-92) In Stock

What are the key features of TL431CLPRE3?

What is TL431CLPRE3 used for?

What are the specifications of TL431CLPRE3?

Compliance & Regulatory

Where can I find the TL431CLPRE3 datasheet?

What are equivalent replacements for TL431CLPRE3?

Frequently Asked Questions

What output voltage range does TL431CLPRE3 support and how is it set?

How is TL431CLPRE3 used in isolated flyback power supply designs?

What is the minimum cathode current for TL431CLPRE3 and how does it affect low-power circuit designs?

Is TL431CLPRE3 RoHS-compliant and what package does it come in?

Related Guides

CSD87313DMS Synchronous Buck Power Stage Design Guide

STEF05SGR eFuse Selection Guide for 5 V Overcurrent Protection

C0402C103K3RACTU Selection Guide: Choosing a 10 nF 0402 MLCC

STM32H753VIT6 MCU Selection Guide: Memory, Package, Connectivity, and Security

Why Buy from FindMyChip

About Texas Instruments

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