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  • The L4931 is a very low drop regulator available in SO-8, DPAK, PPAK and TO-92 packages and in a wide range of output voltages.

    The very low drop voltage (0.4 V) and the very low quiescent current make it particularly suitable for low noise, low power applications and especially in battery-powered systems.
    A TTL compatible shutdown logic control function is available in PPAK and SO-8 packages. This means that when the device is used as a local regulator, a part of the board can be put in standby mode, decreasing the total power consumption. It requires only a 2.2 µF capacitor for stability allowing space and cost saving.
    The L4931 is available as automotive-grade in SO-8 package only. This device is qualified according to the specification AEC-Q100 of the automotive market, in the temperature range from 40 °C to 125 °C, and the statistical tests: PAT, SYL, SBL are performed.

    Key Features

    • Very low dropout voltage (0.4 V)
    • Very low quiescent current
    • Typ. 50 µA in OFF mode, 600 µA in ON mode
    • Output current up to 250 mA
    • Logic controlled electronic shutdown
    • Output voltages: 3.3; 3.5; 5; 12 V
    • Automotive-grade product: 3.3 V VOUT in SO-8 package only
    • Internal current and thermal limit
    • Only 2.2 µF for stability
    • Available in ± 1 % (AB) or 2 % (C) selection at 25 °C
    • Supply voltage rejection: 70 dB typ. for 5 V version
    • Temperature range: from -40 to 125 °C

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L4931CZ33-AP TO-92 Tape And Reel 3.3 1 0.25
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EAR99

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L4931CD50-TR SO-8 Tape And Reel 5 1 0.25
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0.33 1000
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L4931ABD33-TR SO-8 Tape And Reel 3.3 1 0.25
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0.33 1000
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L4931CD33-TR SO-8 Tape And Reel 3.3 1 0.25
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0.35 1000
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EAR99

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L4931ABDT50-TR DPAK Tape And Reel 5 1 0.25
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0.35 1000
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L4931CPT50-TR PPACK 5 Tape And Reel 5 1 0.25
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0.446 1000
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L4931CDT33-TR DPAK Tape And Reel 3.3 1 0.25
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L4931CD35-TR SO-8 Tape And Reel 3.5 1 0.25
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0.33 1000
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L4931CD120-TR SO-8 Tape And Reel 12 1 0.25
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L4931ABDT35TR DPAK Tape And Reel 3.5 1 0.25
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L4931CZ50-AP TO-92 Tape And Reel 5 1 0.25
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L4931ABD120TR SO-8 Tape And Reel 12 1 0.25
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L4931ABD50-TR SO-8 Tape And Reel 5 1 0.25
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0.33 1000
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L4931ABDT33-TR DPAK Tape And Reel 3.3 1 0.25
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0.35 1000
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L4931CDT50-TR DPAK Tape And Reel 5 1 0.25
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0.341 1000
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L4931CD33-TRY SO-8 Tape And Reel 3.3 1 0.25
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0.538 1000
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L4931CZ33-AP

Package

TO-92

Packing Type

Tape And Reel

Unit Price (US$)

0.319*

Distributor availability ofL4931CZ33-AP

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Output Voltage (V) (nom)

3.3

Output Tolerance (typ)

1

Output Current (A) (nom)

0.25

Marketing Status

Active

Unit Price (US$)

0.319

Quantity

1000

ECCN (US)

EAR99

Country of Origin

CHINA

L4931CD50-TR

Package

SO-8

Packing Type

Tape And Reel

Unit Price (US$)

0.33*

Distributor availability ofL4931CD50-TR

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DIGIKEY WORLDWIDE 6828 1 Order Now
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Farnell Element14 EUROPE 955 1 Order Now
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6828

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Stock

710

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10

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Stock

2500

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Stock

5000

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2500

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38

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3761

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955

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Output Voltage (V) (nom)

5

Output Tolerance (typ)

1

Output Current (A) (nom)

0.25

Marketing Status

Active

Unit Price (US$)

0.33

Quantity

1000

ECCN (US)

EAR99

Country of Origin

CHINA

L4931ABD33-TR

Package

SO-8

Packing Type

Tape And Reel

Unit Price (US$)

0.33*

Distributor availability ofL4931ABD33-TR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 8283 1 Order Now
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Distributor reported inventory date: 2020-01-16

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Stock

8283

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1

Region

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Stock

6305

Min.Order

5

Region

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Stock

20000

Min.Order

0

Region

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Stock

2500

Min.Order

2500

Region

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Stock

11821

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1

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Distributor reported inventory date: 2020-01-16

Output Voltage (V) (nom)

3.3

Output Tolerance (typ)

1

Output Current (A) (nom)

0.25

Marketing Status

Active

Unit Price (US$)

0.33

Quantity

1000

ECCN (US)

EAR99

Country of Origin

CHINA

L4931CD33-TR

Package

SO-8

Packing Type

Tape And Reel

Unit Price (US$)

0.35*

Distributor availability ofL4931CD33-TR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 526 1 Order Now
COMPEL EUROPE 666 1 Order Now
RS COMPONENTS EUROPE 1690 10 Order Now
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MOUSER WORLDWIDE 1307 1 Order Now
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Distributor reported inventory date: 2020-01-16

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Stock

526

Min.Order

1

Region

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Stock

666

Min.Order

1

Region

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RS COMPONENTS

Stock

1690

Min.Order

10

Region

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Stock

5000

Min.Order

0

Region

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Stock

2500

Min.Order

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Stock

17500

Min.Order

2500

Region

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Stock

1307

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1

Region

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Stock

2465

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1

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Stock

5000

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2500

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Distributor reported inventory date: 2020-01-16

Output Voltage (V) (nom)

3.3

Output Tolerance (typ)

1

Output Current (A) (nom)

0.25

Marketing Status

Active

Unit Price (US$)

0.35

Quantity

1000

ECCN (US)

EAR99

Country of Origin

CHINA

L4931ABDT50-TR

Package

DPAK

Packing Type

Tape And Reel

Unit Price (US$)

0.35*

Distributor availability ofL4931ABDT50-TR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 2713 1 Order Now
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Farnell Element14 EUROPE 4675 1 Order Now

Distributor reported inventory date: 2020-01-16

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DIGIKEY

Stock

2713

Min.Order

1

Region

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Stock

2500

Min.Order

0

Region

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Stock

4571

Min.Order

1

Region

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Stock

4675

Min.Order

1

Region

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Distributor reported inventory date: 2020-01-16

Output Voltage (V) (nom)

5

Output Tolerance (typ)

1

Output Current (A) (nom)

0.25

Marketing Status

Active

Unit Price (US$)

0.35

Quantity

1000

ECCN (US)

EAR99

Country of Origin

CHINA

L4931CPT50-TR

Package

PPACK 5

Packing Type

Tape And Reel

Unit Price (US$)

0.446*

Output Voltage (V) (nom)

5

Output Tolerance (typ)

1

Output Current (A) (nom)

0.25

Marketing Status

NRND

Unit Price (US$)

0.446

Quantity

1000

ECCN (US)

EAR99

Country of Origin

-

L4931CDT33-TR

Package

DPAK

Packing Type

Tape And Reel

Unit Price (US$)

0.341*

Distributor availability ofL4931CDT33-TR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 1661 1 Order Now
COMPEL EUROPE 899 1 Order Now
FUTURE WORLDWIDE 2400 1 Order Now
ARROW EUROPE 10000 0 Order Now
ARROW AMERICA 71 1 Order Now
MOUSER WORLDWIDE 1725 1 Order Now
Farnell Element14 EUROPE 2500 1 Order Now
ANGLIA Live EUROPE 2500 2500 Order Now

Distributor reported inventory date: 2020-01-16

Distributor Name

DIGIKEY

Stock

1661

Min.Order

1

Region

WORLDWIDE Order Now

COMPEL

Stock

899

Min.Order

1

Region

EUROPE Order Now

FUTURE

Stock

2400

Min.Order

1

Region

WORLDWIDE Order Now

ARROW

Stock

10000

Min.Order

0

Region

EUROPE Order Now

ARROW

Stock

71

Min.Order

1

Region

AMERICA Order Now

MOUSER

Stock

1725

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

2500

Min.Order

1

Region

EUROPE Order Now

ANGLIA Live

Stock

2500

Min.Order

2500

Region

EUROPE Order Now

Distributor reported inventory date: 2020-01-16

Output Voltage (V) (nom)

3.3

Output Tolerance (typ)

1

Output Current (A) (nom)

0.25

Marketing Status

Active

Unit Price (US$)

0.341

Quantity

1000

ECCN (US)

EAR99

Country of Origin

CHINA

L4931CD35-TR

Package

SO-8

Packing Type

Tape And Reel

Unit Price (US$)

0.33*

Distributor availability ofL4931CD35-TR

Distributor Name
Region Stock Min. Order Third party link
ARROW EUROPE 2500 0 Order Now
MOUSER WORLDWIDE 2847 1 Order Now

Distributor reported inventory date: 2020-01-16

Distributor Name

ARROW

Stock

2500

Min.Order

0

Region

EUROPE Order Now

MOUSER

Stock

2847

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2020-01-16

Output Voltage (V) (nom)

3.5

Output Tolerance (typ)

1

Output Current (A) (nom)

0.25

Marketing Status

Active

Unit Price (US$)

0.33

Quantity

1000

ECCN (US)

EAR99

Country of Origin

CHINA

L4931CD120-TR

Package

SO-8

Packing Type

Tape And Reel

Unit Price (US$)

0.33*

Distributor availability ofL4931CD120-TR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 1792 1 Order Now
MOUSER WORLDWIDE 4241 1 Order Now

Distributor reported inventory date: 2020-01-16

Distributor Name

DIGIKEY

Stock

1792

Min.Order

1

Region

WORLDWIDE Order Now

MOUSER

Stock

4241

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2020-01-16

Output Voltage (V) (nom)

12

Output Tolerance (typ)

1

Output Current (A) (nom)

0.25

Marketing Status

NRND

Unit Price (US$)

0.33

Quantity

1000

ECCN (US)

EAR99

Country of Origin

-

L4931ABDT35TR

Package

DPAK

Packing Type

Tape And Reel

Unit Price (US$)

0.35*

Distributor availability ofL4931ABDT35TR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 2425 1 Order Now
MOUSER WORLDWIDE 2485 1 Order Now

Distributor reported inventory date: 2020-01-16

Distributor Name

DIGIKEY

Stock

2425

Min.Order

1

Region

WORLDWIDE Order Now

MOUSER

Stock

2485

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2020-01-16

Output Voltage (V) (nom)

3.5

Output Tolerance (typ)

1

Output Current (A) (nom)

0.25

Marketing Status

Active

Unit Price (US$)

0.35

Quantity

1000

ECCN (US)

EAR99

Country of Origin

CHINA

L4931CZ50-AP

Package

TO-92

Packing Type

Tape And Reel

Unit Price (US$)

0.319*

Distributor availability ofL4931CZ50-AP

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 14220 1 Order Now
RS COMPONENTS EUROPE 3035 5 Order Now
MOUSER WORLDWIDE 5101 1 Order Now
Farnell Element14 EUROPE 3505 1 Order Now

Distributor reported inventory date: 2020-01-16

Distributor Name

DIGIKEY

Stock

14220

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

3035

Min.Order

5

Region

EUROPE Order Now

MOUSER

Stock

5101

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

3505

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-01-16

Output Voltage (V) (nom)

5

Output Tolerance (typ)

1

Output Current (A) (nom)

0.25

Marketing Status

Active

Unit Price (US$)

0.319

Quantity

1000

ECCN (US)

EAR99

Country of Origin

CHINA

L4931ABD120TR

Package

SO-8

Packing Type

Tape And Reel

Unit Price (US$)

0.33*

Distributor availability ofL4931ABD120TR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 3739 1 Order Now
RS COMPONENTS EUROPE 3073 5 Order Now
ARROW EUROPE 2500 0 Order Now
ARROW AMERICA 2500 2500 Order Now
MOUSER WORLDWIDE 2556 1 Order Now
Farnell Element14 EUROPE 1569 1 Order Now

Distributor reported inventory date: 2020-01-16

Distributor Name

DIGIKEY

Stock

3739

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

3073

Min.Order

5

Region

EUROPE Order Now

ARROW

Stock

2500

Min.Order

0

Region

EUROPE Order Now

ARROW

Stock

2500

Min.Order

2500

Region

AMERICA Order Now

MOUSER

Stock

2556

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

1569

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-01-16

Output Voltage (V) (nom)

12

Output Tolerance (typ)

1

Output Current (A) (nom)

0.25

Marketing Status

Active

Unit Price (US$)

0.33

Quantity

1000

ECCN (US)

EAR99

Country of Origin

CHINA

L4931ABD50-TR

Package

SO-8

Packing Type

Tape And Reel

Unit Price (US$)

0.33*

Distributor availability ofL4931ABD50-TR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 20115 1 Order Now
RS COMPONENTS EUROPE 25540 5 Order Now
ARROW EUROPE 50000 0 Order Now
MOUSER WORLDWIDE 5174 1 Order Now

Distributor reported inventory date: 2020-01-16

Distributor Name

DIGIKEY

Stock

20115

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

25540

Min.Order

5

Region

EUROPE Order Now

ARROW

Stock

50000

Min.Order

0

Region

EUROPE Order Now

MOUSER

Stock

5174

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2020-01-16

Output Voltage (V) (nom)

5

Output Tolerance (typ)

1

Output Current (A) (nom)

0.25

Marketing Status

Active

Unit Price (US$)

0.33

Quantity

1000

ECCN (US)

EAR99

Country of Origin

CHINA

L4931ABDT33-TR

Package

DPAK

Packing Type

Tape And Reel

Unit Price (US$)

0.35*

Distributor availability ofL4931ABDT33-TR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 2484 1 Order Now
COMPEL EUROPE 1191 1 Order Now
RS COMPONENTS EUROPE 2815 1 Order Now
MOUSER WORLDWIDE 5225 1 Order Now
Farnell Element14 EUROPE 1606 1 Order Now

Distributor reported inventory date: 2020-01-16

Distributor Name

DIGIKEY

Stock

2484

Min.Order

1

Region

WORLDWIDE Order Now

COMPEL

Stock

1191

Min.Order

1

Region

EUROPE Order Now

RS COMPONENTS

Stock

2815

Min.Order

1

Region

EUROPE Order Now

MOUSER

Stock

5225

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

1606

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-01-16

Output Voltage (V) (nom)

3.3

Output Tolerance (typ)

1

Output Current (A) (nom)

0.25

Marketing Status

Active

Unit Price (US$)

0.35

Quantity

1000

ECCN (US)

EAR99

Country of Origin

CHINA

L4931CDT50-TR

Package

DPAK

Packing Type

Tape And Reel

Unit Price (US$)

0.341*

Distributor availability ofL4931CDT50-TR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 788 1 Order Now
ARROW EUROPE 2500 0 Order Now
MOUSER WORLDWIDE 2876 1 Order Now
ANGLIA Live EUROPE 2500 2500 Order Now

Distributor reported inventory date: 2020-01-16

Distributor Name

DIGIKEY

Stock

788

Min.Order

1

Region

WORLDWIDE Order Now

ARROW

Stock

2500

Min.Order

0

Region

EUROPE Order Now

MOUSER

Stock

2876

Min.Order

1

Region

WORLDWIDE Order Now

ANGLIA Live

Stock

2500

Min.Order

2500

Region

EUROPE Order Now

Distributor reported inventory date: 2020-01-16

Output Voltage (V) (nom)

5

Output Tolerance (typ)

1

Output Current (A) (nom)

0.25

Marketing Status

Active

Unit Price (US$)

0.341

Quantity

1000

ECCN (US)

EAR99

Country of Origin

CHINA

L4931CD33-TRY

Package

SO-8

Packing Type

Tape And Reel

Unit Price (US$)

0.538*

Distributor availability ofL4931CD33-TRY

Distributor Name
Region Stock Min. Order Third party link
MOUSER WORLDWIDE 3771 1 Order Now

Distributor reported inventory date: 2020-01-16

Distributor Name

MOUSER

Stock

3771

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2020-01-16

Output Voltage (V) (nom)

3.3

Output Tolerance (typ)

1

Output Current (A) (nom)

0.25

Marketing Status

Active

Unit Price (US$)

0.538

Quantity

1000

ECCN (US)

EAR99

Country of Origin

CHINA

(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office  or our Distributors

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Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
L4931ABD120TR
Active
SO-8 Industrial Ecopack2
L4931ABD33-TR
Active
SO-8 Industrial Ecopack2
L4931ABD50-TR
Active
SO-8 Industrial Ecopack2
L4931ABDT33-TR
Active
DPAK Industrial Ecopack2
L4931ABDT35TR
Active
DPAK Industrial Ecopack2
L4931ABDT50-TR
Active
DPAK Industrial Ecopack2
L4931CD120-TR
NRND
SO-8 Industrial Ecopack2
L4931CD33-TR
Active
SO-8 Industrial Ecopack2
L4931CD33-TRY
Active
SO-8 Automotive Ecopack2
L4931CD35-TR
Active
SO-8 Industrial Ecopack2
L4931CD50-TR
Active
SO-8 Industrial Ecopack2
L4931CDT33-TR
Active
DPAK Industrial Ecopack2
L4931CDT50-TR
Active
DPAK Industrial Ecopack2
L4931CPT50-TR
NRND
PPACK 5 Industrial Ecopack2
L4931CZ33-AP
Active
TO-92 Industrial Ecopack2
L4931CZ50-AP
Active
TO-92 Industrial Ecopack2

L4931ABD120TR

Package:

SO-8

Material Declaration**:

PDF XML

Marketing Status

Active

Package

SO-8

Grade

Industrial

RoHS Compliance Grade

Ecopack2

L4931ABD33-TR

Package:

SO-8

Material Declaration**:

PDF XML

Marketing Status

Active

Package

SO-8

Grade

Industrial

RoHS Compliance Grade

Ecopack2

L4931ABD50-TR

Package:

SO-8

Material Declaration**:

PDF XML

Marketing Status

Active

Package

SO-8

Grade

Industrial

RoHS Compliance Grade

Ecopack2

L4931ABDT33-TR

Package:

DPAK

Material Declaration**:

PDF XML

Marketing Status

Active

Package

DPAK

Grade

Industrial

RoHS Compliance Grade

Ecopack2

L4931ABDT35TR

Package:

DPAK

Material Declaration**:

Marketing Status

Active

Package

DPAK

Grade

Industrial

RoHS Compliance Grade

Ecopack2

L4931ABDT50-TR

Package:

DPAK

Material Declaration**:

PDF XML

Marketing Status

Active

Package

DPAK

Grade

Industrial

RoHS Compliance Grade

Ecopack2

L4931CD120-TR

Package:

SO-8

Material Declaration**:

PDF XML

Marketing Status

NRND

Package

SO-8

Grade

Industrial

RoHS Compliance Grade

Ecopack2

L4931CD33-TR

Package:

SO-8

Material Declaration**:

PDF XML

Marketing Status

Active

Package

SO-8

Grade

Industrial

RoHS Compliance Grade

Ecopack2

L4931CD33-TRY

Package:

SO-8

Material Declaration**:

Marketing Status

Active

Package

SO-8

Grade

Automotive

RoHS Compliance Grade

Ecopack2

L4931CD35-TR

Package:

SO-8

Material Declaration**:

Marketing Status

Active

Package

SO-8

Grade

Industrial

RoHS Compliance Grade

Ecopack2

L4931CD50-TR

Package:

SO-8

Material Declaration**:

PDF XML

Marketing Status

Active

Package

SO-8

Grade

Industrial

RoHS Compliance Grade

Ecopack2

L4931CDT33-TR

Package:

DPAK

Material Declaration**:

PDF XML

Marketing Status

Active

Package

DPAK

Grade

Industrial

RoHS Compliance Grade

Ecopack2

L4931CDT50-TR

Package:

DPAK

Material Declaration**:

PDF XML

Marketing Status

Active

Package

DPAK

Grade

Industrial

RoHS Compliance Grade

Ecopack2

L4931CPT50-TR

Package:

PPACK 5

Material Declaration**:

Marketing Status

NRND

Package

PPACK 5

Grade

Industrial

RoHS Compliance Grade

Ecopack2

L4931CZ33-AP

Package:

TO-92

Material Declaration**:

PDF XML

Marketing Status

Active

Package

TO-92

Grade

Industrial

RoHS Compliance Grade

Ecopack2

L4931CZ50-AP

Package:

TO-92

Material Declaration**:

Marketing Status

Active

Package

TO-92

Grade

Industrial

RoHS Compliance Grade

Ecopack2

(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.

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