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TL431 family

Adjustable precision shunt regulator

Three-terminal shunt regulator family with an output voltage range between

Vref = 2.495 V and 36 V, to be set by two external resistors.

Reference voltage

tolerance (Vref)

Temperature range (Tamb)

Pinning configuration

0 ° C to 70 °C

-40 ° C to 85 °C

-40 ° C to 125 °C

2.0 %

TL431CDBZR

TL431IDBZR

TL431QDBZR

normal pinning

TL431FDT

normal pinning

TL431MFDT

mirrored pinning

1.0 %

TL431ACDBZR

TL431AIDBZR

TL431AQDBZR

normal pinning

TL431AFDT

normal pinning

TL431AMFDT

mirrored pinning

0.5 %

TL431BCDBZR

TL431BIDBZR

TL431BQDBZR

normal pinning

TL431BFDT

normal pinning

TL431BMFDT

mirrored pinning

Features and benefits

  • Programmable output voltage up to 36 V
  • Three different reference voltage tolerances:
    • Standard grade: 2 %
    • A-Grade: 1 %
    • B-Grade: 0.5 %
  • Typical temperature drift: 9 mV (in a range of 0 °C up to 70 °C)
  • Low output noise
  • Typical output impedance: 0.2 Ω
  • Sink current capability: 1 mA to 100 mA
  • AEC-Q100 qualified (grade 1)

Applications

  • Shunt regulator
  • Precision current limiter
  • Precision constant current sink
  • Isolated feedback loop for Switch Mode Power Supply (SMPS)

Parametrics

Type numberPackage versionPackage nameSize (mm)Pinning configurationTamb (°C)Vref tolerance (%)Vref (V)VKA (V)IK (mA)
TL431ACDBZRSOT23SOT232.9 x 1.3 x 1normal0~7012.49536100
TL431AFDTSOT23SOT232.9 x 1.3 x 1normal-40~12512.49536100
TL431AIDBZRSOT23SOT232.9 x 1.3 x 1normal-40~8512.49536100
TL431AMFDTSOT23SOT232.9 x 1.3 x 1mirrored-40~12512.49536100
TL431AQDBZRSOT23SOT232.9 x 1.3 x 1normal-40~12512.49536100
TL431BCDBZRSOT23SOT232.9 x 1.3 x 1normal0~700.52.49536100
TL431BFDTSOT23SOT232.9 x 1.3 x 1normal-40~1250.52.49536100
TL431BIDBZRSOT23SOT232.9 x 1.3 x 1normal-40~850.52.49536100
TL431BMFDTSOT23SOT232.9 x 1.3 x 1mirrored-40~1250.52.49536100
TL431BQDBZRSOT23SOT232.9 x 1.3 x 1normal-40~1250.52.49536100
TL431CDBZRSOT23SOT232.9 x 1.3 x 1normal0~7022.49536100
TL431FDTSOT23SOT232.9 x 1.3 x 1normal-40~12522.49536100
TL431IDBZRSOT23SOT232.9 x 1.3 x 1normal-40~8522.49536100
TL431MFDTSOT23SOT232.9 x 1.3 x 1mirrored-40~12522.49536100
TL431QDBZRSOT23SOT232.9 x 1.3 x 1normal-40~12522.49536100

Package

Type numberPackagePackage informationReflow-/Wave solderingPackingStatusMarkingOrderable part number, (Ordering code (12NC))
TL431ACDBZR

(SOT23)
REFLOW_BG-BD-1
WAVE_BG-BD-1
Reel 11" Q3/T4, LargePackActiveCD%TL431ACDBZRVL
( 9352 880 19235 )
Reel 7" Q3/T4ActiveCD%TL431ACDBZR,215
( 9352 880 19215 )
TL431AFDT

(SOT23)
REFLOW_BG-BD-1
WAVE_BG-BD-1
Reel 7" Q3/T4ActiveAS%TL431AFDT,215
( 9352 932 75215 )
TL431AFDT/8

(SOT23)
REFLOW_BG-BD-1
WAVE_BG-BD-1
Reel 7" Q3/T4ActiveAS%TL431AFDT/8R
( 9356 907 61215 )
TL431AIDBZR

(SOT23)
REFLOW_BG-BD-1
WAVE_BG-BD-1
Reel 7" Q3/T4ActiveCE%TL431AIDBZR,215
( 9352 880 21215 )
TL431AMFDT

(SOT23)
REFLOW_BG-BD-1
WAVE_BG-BD-1
Reel 7" Q3/T4ActiveAV%TL431AMFDT,215
( 9352 932 78215 )
TL431AQDBZR

(SOT23)
REFLOW_BG-BD-1
WAVE_BG-BD-1
Reel 11" Q3/T4, LargePackActiveCF%TL431AQDBZRVL
( 9352 880 22235 )
Reel 7" Q3/T4ActiveCF%TL431AQDBZR,215
( 9352 880 22215 )
TL431BCDBZR

(SOT23)
REFLOW_BG-BD-1
WAVE_BG-BD-1
Reel 11" Q3/T4, LargePackActiveCG%TL431BCDBZRVL
( 9352 880 23235 )
Reel 7" Q3/T4ActiveCG%TL431BCDBZR,215
( 9352 880 23215 )
TL431BFDT

(SOT23)
REFLOW_BG-BD-1
WAVE_BG-BD-1
Reel 7" Q3/T4ActiveAT%TL431BFDT,215
( 9352 932 76215 )
TL431BIDBZR

(SOT23)
REFLOW_BG-BD-1
WAVE_BG-BD-1
Reel 7" Q3/T4ActiveCH%TL431BIDBZR,215
( 9352 880 24215 )
TL431BMFDT

(SOT23)
REFLOW_BG-BD-1
WAVE_BG-BD-1
Reel 11" Q3/T4, LargePackActiveAW%TL431BMFDTVL
( 9352 932 79235 )
Reel 7" Q3/T4ActiveAW%TL431BMFDT,215
( 9352 932 79215 )
TL431BQDBZR

(SOT23)
REFLOW_BG-BD-1
WAVE_BG-BD-1
Reel 7" Q3/T4ActiveCJ%TL431BQDBZR,215
( 9352 880 25215 )
TL431CDBZR

(SOT23)
REFLOW_BG-BD-1
WAVE_BG-BD-1
Reel 7" Q3/T4ActiveCA%TL431CDBZR,215
( 9352 880 16215 )
TL431FDT

(SOT23)
REFLOW_BG-BD-1
WAVE_BG-BD-1
Reel 7" Q3/T4ActiveAR%TL431FDT,215
( 9352 932 74215 )
TL431IDBZR

(SOT23)
REFLOW_BG-BD-1
WAVE_BG-BD-1
Reel 7" Q3/T4ActiveCB%TL431IDBZR,215
( 9352 880 17215 )
TL431MFDT

(SOT23)
REFLOW_BG-BD-1
WAVE_BG-BD-1
Reel 7" Q3/T4ActiveAU%TL431MFDT,215
( 9352 932 77215 )
TL431QDBZR

(SOT23)
REFLOW_BG-BD-1
WAVE_BG-BD-1
Reel 7" Q3/T4ActiveCC%TL431QDBZR,215
( 9352 880 18215 )

The variants in the table below are discontinued. See the table Discontinuation information for more information.

Type numberPackagePackage informationReflow-/Wave solderingPackingStatusMarkingOrderable part number, (Ordering code (12NC))
TL431BMFDT/8

(SOT23)
REFLOW_BG-BD-1
WAVE_BG-BD-1
Reel 11" Q3/T4, LargePackDiscontinued / End-of-lifeAW%TL431BMFDT/8VL
( 9356 907 62235 )
Reel 7" Q3/T4Discontinued / End-of-lifeAW%TL431BMFDT/8R
( 9356 907 62215 )

Discontinuation information

Type numberOrderable part number, (Ordering code (12NC))Last time buy dateLast time delivery dateReplacement productDN NoticeStatusComments
TL431BFDT/NP935296864215DN
TL431BMFDT/8935690762235DN
TL431BMFDT/8935690762215DN

Quality, reliability & chemical content

Type numberOrderable part numberChemical contentRoHS / RHFLeadfree conversion dateMSLMSL leadfree
TL431ACDBZRTL431ACDBZRVLTL431ACDBZRweek 25, 201911
TL431ACDBZRTL431ACDBZR,215TL431ACDBZRAlways Pb-free11
TL431AFDTTL431AFDT,215TL431AFDTAlways Pb-free11
TL431AFDT/8TL431AFDT/8RTL431AFDT/8week 25, 201911
TL431AIDBZRTL431AIDBZR,215TL431AIDBZRAlways Pb-free11
TL431AMFDTTL431AMFDT,215TL431AMFDTAlways Pb-free11
TL431AQDBZRTL431AQDBZRVLTL431AQDBZRweek 25, 201911
TL431AQDBZRTL431AQDBZR,215TL431AQDBZRAlways Pb-free11
TL431BCDBZRTL431BCDBZRVLTL431BCDBZRweek 25, 201911
TL431BCDBZRTL431BCDBZR,215TL431BCDBZRAlways Pb-free11
TL431BFDTTL431BFDT,215TL431BFDTAlways Pb-free11
TL431BIDBZRTL431BIDBZR,215TL431BIDBZRAlways Pb-free11
TL431BMFDTTL431BMFDTVLTL431BMFDTweek 25, 201911
TL431BMFDTTL431BMFDT,215TL431BMFDTAlways Pb-free11
TL431BQDBZRTL431BQDBZR,215TL431BQDBZRAlways Pb-free11
TL431CDBZRTL431CDBZR,215TL431CDBZRAlways Pb-free11
TL431FDTTL431FDT,215TL431FDTAlways Pb-free11
TL431IDBZRTL431IDBZR,215TL431IDBZRAlways Pb-free11
TL431MFDTTL431MFDT,215TL431MFDTAlways Pb-free11
TL431QDBZRTL431QDBZR,215TL431QDBZRAlways Pb-free11

The variants in the table below are discontinued. See the table Discontinuation information for more information.

Type numberOrderable part numberChemical contentRoHS / RHFLeadfree conversion dateMSLMSL leadfree
TL431BMFDT/8TL431BMFDT/8VLTL431BMFDT/8week 25, 201911
TL431BMFDT/8TL431BMFDT/8RTL431BMFDT/8week 25, 201911
Quality and reliability disclaimer

Documentation (3)

File nameTitleTypeDate
Nexperia_Selection_guide_2022Nexperia Selection Guide 2022Selection guide2022-01-05
WAVE_BG-BD-1Wave soldering profileWave soldering2021-09-08
REFLOW_BG-BD-1Reflow soldering profileReflow soldering2021-04-06

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