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  • The LM217, LM317 are monolithic integrated circuits in TO-220, TO-220FP and D²PAK packages intended for use as positive adjustable voltage regulators.

    They are designed to supply more than 1.5 A of load current with an output voltage adjustable over a 1.2 to 37 V range.
    The nominal output voltage is selected by means of a resistive divider, making the device exceptionally easy to use and eliminating the stocking of many fixed regulators.

    Key Features

    • Output voltage range: 1.2 to 37 V
    • Output current in excess of 1.5 A
    • 0.1% line and load regulation
    • Floating operation for high voltages
    • Complete series of protections: current limiting, thermal shutdown and SOA control

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STMicroelectronics - LM317

Speed up your design by downloading all the EDA symbols, footprints and 3D models for your application. You have access to a large number of CAD formats to fit with your design toolchain.

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Quality and Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
LM317BT
Active
TO-220 Industrial Ecopack2
LM317D2T-TR
Active
D2PAK Industrial Ecopack2
LM317P
Active
TO-220FP Industrial Ecopack2
LM317T
Active
TO-220 Industrial Ecopack2
LM317T-DG
Active
TO-220 Industrial Ecopack2 (**)

LM317BT

Package:

TO-220

Material Declaration**:

PDF XML

Marketing Status

Active

Package

TO-220

Grade

Industrial

RoHS Compliance Grade

Ecopack2

LM317D2T-TR

Package:

D2PAK

Material Declaration**:

PDF XML

Marketing Status

Active

Package

D2PAK

Grade

Industrial

RoHS Compliance Grade

Ecopack2

LM317P

Package:

TO-220FP

Material Declaration**:

PDF XML

Marketing Status

Active

Package

TO-220FP

Grade

Industrial

RoHS Compliance Grade

Ecopack2

LM317T

Package:

TO-220

Material Declaration**:

PDF XML

Marketing Status

Active

Package

TO-220

Grade

Industrial

RoHS Compliance Grade

Ecopack2

LM317T-DG

Package:

TO-220

Material Declaration**:

PDF XML

Marketing Status

Active

Package

TO-220

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.

Sample & Buy

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ECCN (US)
ECCN (EU)
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Temperature (°C) Country of Origin
Budgetary Price (US$)*/Qty
min
max
LM317D2T-TR Available at 10 distributors

Distributor availability ofLM317D2T-TR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 6419 1 Order Now
COMPEL EUROPE 13201 1 Order Now
RS COMPONENTS EUROPE 8025 5 Order Now
AVNET AMERICA 62000 0 Order Now
FUTURE WORLDWIDE 29129 1 Order Now
ARROW EUROPE 18000 0 Order Now
ARROW AMERICA 4000 1000 Order Now
MOUSER WORLDWIDE 3871 1 Order Now
Farnell Element14 EUROPE 11350 1 Order Now
ANGLIA Live EUROPE 5000 1000 Order Now

Distributor reported inventory date: 2020-12-02

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DIGIKEY

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6419

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1

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13201

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1

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8025

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5

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62000

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29129

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11350

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Stock

5000

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1000

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Distributor reported inventory date: 2020-12-02

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Active
EAR99 NEC Tape And Reel D2PAK 0 125 CHINA 0.32 / 1k
LM317BT Available at 5 distributors

Distributor availability ofLM317BT

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 9248 1 Order Now
RS COMPONENTS EUROPE 1290 10 Order Now
ARROW EUROPE 1558 0 Order Now
MOUSER WORLDWIDE 741 1 Order Now
Farnell Element14 EUROPE 316 1 Order Now

Distributor reported inventory date: 2020-12-02

Distributor Name

DIGIKEY

Stock

9248

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

1290

Min.Order

10

Region

EUROPE Order Now

ARROW

Stock

1558

Min.Order

0

Region

EUROPE Order Now

MOUSER

Stock

741

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

316

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-12-02

Buy Direct
Active
EAR99 NEC Tube TO-220 -40 125 CHINA 0.23 / 1k
LM317T-DG Available at 10 distributors

Distributor availability ofLM317T-DG

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 5979 1 Order Now
COMPEL EUROPE 452 1 Order Now
RS COMPONENTS EUROPE 400 25 Order Now
AVNET AMERICA 15321 0 Order Now
ARROW EUROPE 12087 0 Order Now
Newark Element14 AMERICA 204 0 Order Now
ARROW AMERICA 34823 1000 Order Now
MOUSER WORLDWIDE 4813 1 Order Now
Farnell Element14 EUROPE 1217 1 Order Now
RUTRONIK EUROPE 500 50 Order Now

Distributor reported inventory date: 2020-12-02

Distributor Name

DIGIKEY

Stock

5979

Min.Order

1

Region

WORLDWIDE Order Now

COMPEL

Stock

452

Min.Order

1

Region

EUROPE Order Now

RS COMPONENTS

Stock

400

Min.Order

25

Region

EUROPE Order Now

AVNET

Stock

15321

Min.Order

0

Region

AMERICA Order Now

ARROW

Stock

12087

Min.Order

0

Region

EUROPE Order Now

Newark Element14

Stock

204

Min.Order

0

Region

AMERICA Order Now

ARROW

Stock

34823

Min.Order

1000

Region

AMERICA Order Now

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Stock

4813

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

1217

Min.Order

1

Region

EUROPE Order Now

RUTRONIK

Stock

500

Min.Order

50

Region

EUROPE Order Now

Distributor reported inventory date: 2020-12-02

Buy Direct
Active
EAR99 NEC Tube TO-220 0 125 CHINA 0.192 / 1k
LM317T Available at 12 distributors

Distributor availability ofLM317T

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 24822 1 Order Now
COMPEL EUROPE 11528 1 Order Now
RS COMPONENTS EUROPE 18596 50 Order Now
AVNET AMERICA 233598 0 Order Now
FUTURE WORLDWIDE 4412 1 Order Now
ARROW EUROPE 294292 0 Order Now
Newark Element14 AMERICA 5 0 Order Now
ARROW AMERICA 59733 1000 Order Now
MOUSER WORLDWIDE 33682 1 Order Now
Farnell Element14 EUROPE 20280 1 Order Now
ANGLIA Live EUROPE 93400 50 Order Now
RUTRONIK EUROPE 10500 50 Order Now

Distributor reported inventory date: 2020-12-02

Distributor Name

DIGIKEY

Stock

24822

Min.Order

1

Region

WORLDWIDE Order Now

COMPEL

Stock

11528

Min.Order

1

Region

EUROPE Order Now

RS COMPONENTS

Stock

18596

Min.Order

50

Region

EUROPE Order Now

AVNET

Stock

233598

Min.Order

0

Region

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FUTURE

Stock

4412

Min.Order

1

Region

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ARROW

Stock

294292

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0

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Newark Element14

Stock

5

Min.Order

0

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AMERICA Order Now

ARROW

Stock

59733

Min.Order

1000

Region

AMERICA Order Now

MOUSER

Stock

33682

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

20280

Min.Order

1

Region

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ANGLIA Live

Stock

93400

Min.Order

50

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RUTRONIK

Stock

10500

Min.Order

50

Region

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Distributor reported inventory date: 2020-12-02

Buy Direct
Active
EAR99 NEC Tube TO-220 0 125 CHINA 0.144 / 1k
LM317P Available at 10 distributors

Distributor availability ofLM317P

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 3541 1 Order Now
COMPEL EUROPE 2462 1 Order Now
RS COMPONENTS EUROPE 2130 10 Order Now
AVNET AMERICA 3943 0 Order Now
FUTURE WORLDWIDE 1101 50 Order Now
ARROW EUROPE 4910 0 Order Now
Newark Element14 AMERICA 8 0 Order Now
MOUSER WORLDWIDE 3686 1 Order Now
Farnell Element14 EUROPE 404 1 Order Now
ANGLIA Live EUROPE 1265 1 Order Now

Distributor reported inventory date: 2020-12-02

Distributor Name

DIGIKEY

Stock

3541

Min.Order

1

Region

WORLDWIDE Order Now

COMPEL

Stock

2462

Min.Order

1

Region

EUROPE Order Now

RS COMPONENTS

Stock

2130

Min.Order

10

Region

EUROPE Order Now

AVNET

Stock

3943

Min.Order

0

Region

AMERICA Order Now

FUTURE

Stock

1101

Min.Order

50

Region

WORLDWIDE Order Now

ARROW

Stock

4910

Min.Order

0

Region

EUROPE Order Now

Newark Element14

Stock

8

Min.Order

0

Region

AMERICA Order Now

MOUSER

Stock

3686

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

404

Min.Order

1

Region

EUROPE Order Now

ANGLIA Live

Stock

1265

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-12-02

Buy Direct
Active
EAR99 NEC Tube TO-220FP 0 125 CHINA 0.306 / 1k

LM317D2T-TR

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.32 / 1k

Distributor availability ofLM317D2T-TR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 6419 1 Order Now
COMPEL EUROPE 13201 1 Order Now
RS COMPONENTS EUROPE 8025 5 Order Now
AVNET AMERICA 62000 0 Order Now
FUTURE WORLDWIDE 29129 1 Order Now
ARROW EUROPE 18000 0 Order Now
ARROW AMERICA 4000 1000 Order Now
MOUSER WORLDWIDE 3871 1 Order Now
Farnell Element14 EUROPE 11350 1 Order Now
ANGLIA Live EUROPE 5000 1000 Order Now

Distributor reported inventory date: 2020-12-02

Distributor Name

DIGIKEY

Stock

6419

Min.Order

1

Region

WORLDWIDE Order Now

COMPEL

Stock

13201

Min.Order

1

Region

EUROPE Order Now

RS COMPONENTS

Stock

8025

Min.Order

5

Region

EUROPE Order Now

AVNET

Stock

62000

Min.Order

0

Region

AMERICA Order Now

FUTURE

Stock

29129

Min.Order

1

Region

WORLDWIDE Order Now

ARROW

Stock

18000

Min.Order

0

Region

EUROPE Order Now

ARROW

Stock

4000

Min.Order

1000

Region

AMERICA Order Now

MOUSER

Stock

3871

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

11350

Min.Order

1

Region

EUROPE Order Now

ANGLIA Live

Stock

5000

Min.Order

1000

Region

EUROPE Order Now

Distributor reported inventory date: 2020-12-02

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

D2PAK

Operating Temperature (°C)

(min)

0

(max)

125

Budgetary Price (US$)* / Qty

0.32 / 1k

Country of Origin

CHINA

LM317BT

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.23 / 1k

Distributor availability ofLM317BT

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 9248 1 Order Now
RS COMPONENTS EUROPE 1290 10 Order Now
ARROW EUROPE 1558 0 Order Now
MOUSER WORLDWIDE 741 1 Order Now
Farnell Element14 EUROPE 316 1 Order Now

Distributor reported inventory date: 2020-12-02

Distributor Name

DIGIKEY

Stock

9248

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

1290

Min.Order

10

Region

EUROPE Order Now

ARROW

Stock

1558

Min.Order

0

Region

EUROPE Order Now

MOUSER

Stock

741

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

316

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-12-02

ECCN (EU)

NEC

Packing Type

Tube

Package

TO-220

Operating Temperature (°C)

(min)

-40

(max)

125

Budgetary Price (US$)* / Qty

0.23 / 1k

Country of Origin

CHINA

LM317T-DG

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.192 / 1k

Distributor availability ofLM317T-DG

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 5979 1 Order Now
COMPEL EUROPE 452 1 Order Now
RS COMPONENTS EUROPE 400 25 Order Now
AVNET AMERICA 15321 0 Order Now
ARROW EUROPE 12087 0 Order Now
Newark Element14 AMERICA 204 0 Order Now
ARROW AMERICA 34823 1000 Order Now
MOUSER WORLDWIDE 4813 1 Order Now
Farnell Element14 EUROPE 1217 1 Order Now
RUTRONIK EUROPE 500 50 Order Now

Distributor reported inventory date: 2020-12-02

Distributor Name

DIGIKEY

Stock

5979

Min.Order

1

Region

WORLDWIDE Order Now

COMPEL

Stock

452

Min.Order

1

Region

EUROPE Order Now

RS COMPONENTS

Stock

400

Min.Order

25

Region

EUROPE Order Now

AVNET

Stock

15321

Min.Order

0

Region

AMERICA Order Now

ARROW

Stock

12087

Min.Order

0

Region

EUROPE Order Now

Newark Element14

Stock

204

Min.Order

0

Region

AMERICA Order Now

ARROW

Stock

34823

Min.Order

1000

Region

AMERICA Order Now

MOUSER

Stock

4813

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

1217

Min.Order

1

Region

EUROPE Order Now

RUTRONIK

Stock

500

Min.Order

50

Region

EUROPE Order Now

Distributor reported inventory date: 2020-12-02

ECCN (EU)

NEC

Packing Type

Tube

Package

TO-220

Operating Temperature (°C)

(min)

0

(max)

125

Budgetary Price (US$)* / Qty

0.192 / 1k

Country of Origin

CHINA

LM317T

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.144 / 1k

Distributor availability ofLM317T

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 24822 1 Order Now
COMPEL EUROPE 11528 1 Order Now
RS COMPONENTS EUROPE 18596 50 Order Now
AVNET AMERICA 233598 0 Order Now
FUTURE WORLDWIDE 4412 1 Order Now
ARROW EUROPE 294292 0 Order Now
Newark Element14 AMERICA 5 0 Order Now
ARROW AMERICA 59733 1000 Order Now
MOUSER WORLDWIDE 33682 1 Order Now
Farnell Element14 EUROPE 20280 1 Order Now
ANGLIA Live EUROPE 93400 50 Order Now
RUTRONIK EUROPE 10500 50 Order Now

Distributor reported inventory date: 2020-12-02

Distributor Name

DIGIKEY

Stock

24822

Min.Order

1

Region

WORLDWIDE Order Now

COMPEL

Stock

11528

Min.Order

1

Region

EUROPE Order Now

RS COMPONENTS

Stock

18596

Min.Order

50

Region

EUROPE Order Now

AVNET

Stock

233598

Min.Order

0

Region

AMERICA Order Now

FUTURE

Stock

4412

Min.Order

1

Region

WORLDWIDE Order Now

ARROW

Stock

294292

Min.Order

0

Region

EUROPE Order Now

Newark Element14

Stock

5

Min.Order

0

Region

AMERICA Order Now

ARROW

Stock

59733

Min.Order

1000

Region

AMERICA Order Now

MOUSER

Stock

33682

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

20280

Min.Order

1

Region

EUROPE Order Now

ANGLIA Live

Stock

93400

Min.Order

50

Region

EUROPE Order Now

RUTRONIK

Stock

10500

Min.Order

50

Region

EUROPE Order Now

Distributor reported inventory date: 2020-12-02

ECCN (EU)

NEC

Packing Type

Tube

Package

TO-220

Operating Temperature (°C)

(min)

0

(max)

125

Budgetary Price (US$)* / Qty

0.144 / 1k

Country of Origin

CHINA

LM317P

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.306 / 1k

Distributor availability ofLM317P

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 3541 1 Order Now
COMPEL EUROPE 2462 1 Order Now
RS COMPONENTS EUROPE 2130 10 Order Now
AVNET AMERICA 3943 0 Order Now
FUTURE WORLDWIDE 1101 50 Order Now
ARROW EUROPE 4910 0 Order Now
Newark Element14 AMERICA 8 0 Order Now
MOUSER WORLDWIDE 3686 1 Order Now
Farnell Element14 EUROPE 404 1 Order Now
ANGLIA Live EUROPE 1265 1 Order Now

Distributor reported inventory date: 2020-12-02

Distributor Name

DIGIKEY

Stock

3541

Min.Order

1

Region

WORLDWIDE Order Now

COMPEL

Stock

2462

Min.Order

1

Region

EUROPE Order Now

RS COMPONENTS

Stock

2130

Min.Order

10

Region

EUROPE Order Now

AVNET

Stock

3943

Min.Order

0

Region

AMERICA Order Now

FUTURE

Stock

1101

Min.Order

50

Region

WORLDWIDE Order Now

ARROW

Stock

4910

Min.Order

0

Region

EUROPE Order Now

Newark Element14

Stock

8

Min.Order

0

Region

AMERICA Order Now

MOUSER

Stock

3686

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

404

Min.Order

1

Region

EUROPE Order Now

ANGLIA Live

Stock

1265

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-12-02

ECCN (EU)

NEC

Packing Type

Tube

Package

TO-220FP

Operating Temperature (°C)

(min)

0

(max)

125

Budgetary Price (US$)* / Qty

0.306 / 1k

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