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  • Available either in through-hole or surface-mount packages, the BTA24, BTB24, BTA25, BTA26, BTB26 and T25 triac series is suitable for general purpose mains power AC switching.

    Key Features

    • High current triac
    • High commutation (4 quadrant) or very high commutation (3 quadrant) capability
    • Low thermal resistance with clip bonding
    • Packages are RoHS (2002/95/EC) compliant
    • BTA series UL1557 certified (File ref: 81734)

Recommended for you

00 Files selected for download

Technical Documentation

    • Description Version Size Action
      DS2112
      25 A standard and Snubberless™ triacs
      10.2
      129.85 KB
      PDF
      DS2112

      25 A standard and Snubberless™ triacs

    • Description Version Size Action
      AN2986
      AC switch triggering with 3.3 V power supply
      1.4
      338 KB
      PDF
      AN4993
      How to implement a SCR or a Triac in a hybride relay application
      1.1
      991.71 KB
      PDF
      AN4363
      How to select the Triac, ACS, or ACST that fits your application
      2.1
      361.44 KB
      PDF
      AN4564
      Is a positive power supply mandatory for my application, or could a negative output work also?
      1.0
      384.04 KB
      PDF
      AN2703
      Parameter list for SCRs, TRIACs, AC switches, and DIACS
      2.6
      98.99 KB
      PDF
      AN302
      Thyristors and TRIACs: holding current - an important parameter
      3.5
      138.63 KB
      PDF
      AN440
      Triac control with a microcontroller powered from a positive supply
      4.1
      1.12 MB
      PDF
      AN2986

      AC switch triggering with 3.3 V power supply

      AN4993

      How to implement a SCR or a Triac in a hybride relay application

      AN4363

      How to select the Triac, ACS, or ACST that fits your application

      AN4564

      Is a positive power supply mandatory for my application, or could a negative output work also?

      AN2703

      Parameter list for SCRs, TRIACs, AC switches, and DIACS

      AN302

      Thyristors and TRIACs: holding current - an important parameter

      AN440

      Triac control with a microcontroller powered from a positive supply

    • Description Version Size Action
      TN1173
      Packing information for IPAD, protection, rectifiers, thyristors and AC Switches
      7.0
      433.12 KB
      PDF
      TN1173

      Packing information for IPAD, protection, rectifiers, thyristors and AC Switches

HW Model, CAD Libraries & SVD

    • Description Version Size Action
      Standard and Snubberless™ Triacs PSpice model (.lib) and symbols (.olb) 5.1
      30.62 KB
      ZIP

      Standard and Snubberless™ Triacs PSpice model (.lib) and symbols (.olb)

Publications and Collaterals

    • Description Version Size Action
      ST Thyristor Finder: SCRs and Triacs on Android and iOS 1.0
      854.07 KB
      PDF

      ST Thyristor Finder: SCRs and Triacs on Android and iOS

    • Description Version Size Action
      Thyristors, Triacs, AC switches and A.S.D™ selection guide 2.0
      1.51 MB
      PDF

      Thyristors, Triacs, AC switches and A.S.D™ selection guide

Quality and Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
BTA25-600B
Active
RD-91 Industrial Ecopack1
BTA25-600BW
Active
RD-91 Industrial Ecopack1
BTA25-800B
Active
RD-91 Industrial Ecopack1
BTA25-800BW
Active
RD-91 Industrial Ecopack1

BTA25-600B

Package:

RD-91

Material Declaration**:

PDF XML

Marketing Status

Active

Package

RD-91

Grade

Industrial

RoHS Compliance Grade

Ecopack1

BTA25-600BW

Package:

RD-91

Material Declaration**:

PDF XML

Marketing Status

Active

Package

RD-91

Grade

Industrial

RoHS Compliance Grade

Ecopack1

BTA25-800B

Package:

RD-91

Material Declaration**:

PDF XML

Marketing Status

Active

Package

RD-91

Grade

Industrial

RoHS Compliance Grade

Ecopack1

BTA25-800BW

Package:

RD-91

Material Declaration**:

PDF XML

Marketing Status

Active

Package

RD-91

Grade

Industrial

RoHS Compliance Grade

Ecopack1

(**) 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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Budgetary Price (US$)*/Qty
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BTA25-600BW Available at 7 distributors

Distributor availability ofBTA25-600BW

Distributor Name
Region Stock Min. Order Third party link
COMPEL EUROPE 270 1 Order Now
RS COMPONENTS EUROPE 275 1 Order Now
ARROW EUROPE 357 0 Order Now
Newark Element14 AMERICA 12 0 Order Now
ARROW AMERICA 2215 25 Order Now
MOUSER WORLDWIDE 550 1 Order Now
Farnell Element14 EUROPE 42 1 Order Now

Distributor reported inventory date: 2020-08-10

Distributor Name

COMPEL

Stock

270

Min.Order

1

Region

EUROPE Order Now

RS COMPONENTS

Stock

275

Min.Order

1

Region

EUROPE Order Now

ARROW

Stock

357

Min.Order

0

Region

EUROPE Order Now

Newark Element14

Stock

12

Min.Order

0

Region

AMERICA Order Now

ARROW

Stock

2215

Min.Order

25

Region

AMERICA Order Now

MOUSER

Stock

550

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

42

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-08-10

Buy now
Active
EAR99 NEC Poly Bag RD-91 - - I, II, III
MORE INFO

Triggering gate current max (mA) (I, II, III):

50, 50, 50

Triggering gate current max (mA) (I, II, III, IV):

-

Repetitive peak off-state voltage (V) (max):

600

Unit Price (US$):

-

Country of Origin:

PHILIPPINES

BTA25-800B Available at 4 distributors

Distributor availability ofBTA25-800B

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 182 1 Order Now
COMPEL EUROPE 10 1 Order Now
MOUSER WORLDWIDE 231 1 Order Now
Farnell Element14 EUROPE 8 1 Order Now

Distributor reported inventory date: 2020-08-10

Distributor Name

DIGIKEY

Stock

182

Min.Order

1

Region

WORLDWIDE Order Now

COMPEL

Stock

10

Min.Order

1

Region

EUROPE Order Now

MOUSER

Stock

231

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

8

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-08-10

Buy now
Active
EAR99 NEC Poly Bag RD-91 - - I, II, III, IV
MORE INFO

Triggering gate current max (mA) (I, II, III):

-

Triggering gate current max (mA) (I, II, III, IV):

50, 50, 50, 100

Repetitive peak off-state voltage (V) (max):

800

Unit Price (US$):

-

Country of Origin:

PHILIPPINES

BTA25-600B Available at 7 distributors

Distributor availability ofBTA25-600B

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 354 1 Order Now
YOSUN ASIA/PACIFIC 25 1 Order Now
RS COMPONENTS EUROPE 230 2 Order Now
ARROW EUROPE 3742 0 Order Now
Newark Element14 AMERICA 584 0 Order Now
ARROW AMERICA 3446 25 Order Now
ANGLIA Live EUROPE 9 1 Order Now

Distributor reported inventory date: 2020-08-11

Distributor Name

DIGIKEY

Stock

354

Min.Order

1

Region

WORLDWIDE Order Now

YOSUN

Stock

25

Min.Order

1

Region

ASIA/PACIFIC Order Now

RS COMPONENTS

Stock

230

Min.Order

2

Region

EUROPE Order Now

ARROW

Stock

3742

Min.Order

0

Region

EUROPE Order Now

Newark Element14

Stock

584

Min.Order

0

Region

AMERICA Order Now

ARROW

Stock

3446

Min.Order

25

Region

AMERICA Order Now

ANGLIA Live

Stock

9

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-08-11

Active
EAR99 NEC Poly Bag RD-91 - - I, II, III, IV
MORE INFO

Triggering gate current max (mA) (I, II, III):

-

Triggering gate current max (mA) (I, II, III, IV):

50, 50, 50, 100

Repetitive peak off-state voltage (V) (max):

600

Unit Price (US$):

-

Country of Origin:

PHILIPPINES

BTA25-800BW Available at 8 distributors

Distributor availability ofBTA25-800BW

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 14137 1 Order Now
RS COMPONENTS EUROPE 435 1 Order Now
AVNET AMERICA 2750 0 Order Now
Newark Element14 AMERICA 179 0 Order Now
ARROW AMERICA 1349 25 Order Now
MOUSER WORLDWIDE 1174 1 Order Now
Farnell Element14 EUROPE 16 1 Order Now
RUTRONIK EUROPE 5000 25 Order Now

Distributor reported inventory date: 2020-08-10

Distributor Name

DIGIKEY

Stock

14137

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

435

Min.Order

1

Region

EUROPE Order Now

AVNET

Stock

2750

Min.Order

0

Region

AMERICA Order Now

Newark Element14

Stock

179

Min.Order

0

Region

AMERICA Order Now

ARROW

Stock

1349

Min.Order

25

Region

AMERICA Order Now

MOUSER

Stock

1174

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

16

Min.Order

1

Region

EUROPE Order Now

RUTRONIK

Stock

5000

Min.Order

25

Region

EUROPE Order Now

Distributor reported inventory date: 2020-08-10

Buy now
Active
EAR99 NEC Poly Bag RD-91 - - I, II, III
MORE INFO

Triggering gate current max (mA) (I, II, III):

50, 50, 50

Triggering gate current max (mA) (I, II, III, IV):

-

Repetitive peak off-state voltage (V) (max):

800

Unit Price (US$):

-

Country of Origin:

PHILIPPINES

BTA25-600BW

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

Distributor availability ofBTA25-600BW

Distributor Name
Region Stock Min. Order Third party link
COMPEL EUROPE 270 1 Order Now
RS COMPONENTS EUROPE 275 1 Order Now
ARROW EUROPE 357 0 Order Now
Newark Element14 AMERICA 12 0 Order Now
ARROW AMERICA 2215 25 Order Now
MOUSER WORLDWIDE 550 1 Order Now
Farnell Element14 EUROPE 42 1 Order Now

Distributor reported inventory date: 2020-08-10

Distributor Name

COMPEL

Stock

270

Min.Order

1

Region

EUROPE Order Now

RS COMPONENTS

Stock

275

Min.Order

1

Region

EUROPE Order Now

ARROW

Stock

357

Min.Order

0

Region

EUROPE Order Now

Newark Element14

Stock

12

Min.Order

0

Region

AMERICA Order Now

ARROW

Stock

2215

Min.Order

25

Region

AMERICA Order Now

MOUSER

Stock

550

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

42

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-08-10

ECCN (EU)

NEC

Packing Type

Poly Bag

Package

RD-91

Operating Temperature (°C)

(min)

-

(max)

-

Quadrants

I, II, III

Triggering gate current max (mA) (I, II, III)

50, 50, 50

Triggering gate current max (mA) (I, II, III, IV)

-

Repetitive peak off-state voltage (V) (max)

600

Budgetary Price (US$)* / Qty

Country of Origin

PHILIPPINES

BTA25-800B

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

Distributor availability ofBTA25-800B

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 182 1 Order Now
COMPEL EUROPE 10 1 Order Now
MOUSER WORLDWIDE 231 1 Order Now
Farnell Element14 EUROPE 8 1 Order Now

Distributor reported inventory date: 2020-08-10

Distributor Name

DIGIKEY

Stock

182

Min.Order

1

Region

WORLDWIDE Order Now

COMPEL

Stock

10

Min.Order

1

Region

EUROPE Order Now

MOUSER

Stock

231

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

8

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-08-10

ECCN (EU)

NEC

Packing Type

Poly Bag

Package

RD-91

Operating Temperature (°C)

(min)

-

(max)

-

Quadrants

I, II, III, IV

Triggering gate current max (mA) (I, II, III)

-

Triggering gate current max (mA) (I, II, III, IV)

50, 50, 50, 100

Repetitive peak off-state voltage (V) (max)

800

Budgetary Price (US$)* / Qty

Country of Origin

PHILIPPINES

BTA25-600B

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

Distributor availability ofBTA25-600B

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 354 1 Order Now
YOSUN ASIA/PACIFIC 25 1 Order Now
RS COMPONENTS EUROPE 230 2 Order Now
ARROW EUROPE 3742 0 Order Now
Newark Element14 AMERICA 584 0 Order Now
ARROW AMERICA 3446 25 Order Now
ANGLIA Live EUROPE 9 1 Order Now

Distributor reported inventory date: 2020-08-11

Distributor Name

DIGIKEY

Stock

354

Min.Order

1

Region

WORLDWIDE Order Now

YOSUN

Stock

25

Min.Order

1

Region

ASIA/PACIFIC Order Now

RS COMPONENTS

Stock

230

Min.Order

2

Region

EUROPE Order Now

ARROW

Stock

3742

Min.Order

0

Region

EUROPE Order Now

Newark Element14

Stock

584

Min.Order

0

Region

AMERICA Order Now

ARROW

Stock

3446

Min.Order

25

Region

AMERICA Order Now

ANGLIA Live

Stock

9

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-08-11

ECCN (EU)

NEC

Packing Type

Poly Bag

Package

RD-91

Operating Temperature (°C)

(min)

-

(max)

-

Quadrants

I, II, III, IV

Triggering gate current max (mA) (I, II, III)

-

Triggering gate current max (mA) (I, II, III, IV)

50, 50, 50, 100

Repetitive peak off-state voltage (V) (max)

600

Budgetary Price (US$)* / Qty

Country of Origin

PHILIPPINES

BTA25-800BW

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

Distributor availability ofBTA25-800BW

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 14137 1 Order Now
RS COMPONENTS EUROPE 435 1 Order Now
AVNET AMERICA 2750 0 Order Now
Newark Element14 AMERICA 179 0 Order Now
ARROW AMERICA 1349 25 Order Now
MOUSER WORLDWIDE 1174 1 Order Now
Farnell Element14 EUROPE 16 1 Order Now
RUTRONIK EUROPE 5000 25 Order Now

Distributor reported inventory date: 2020-08-10

Distributor Name

DIGIKEY

Stock

14137

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

435

Min.Order

1

Region

EUROPE Order Now

AVNET

Stock

2750

Min.Order

0

Region

AMERICA Order Now

Newark Element14

Stock

179

Min.Order

0

Region

AMERICA Order Now

ARROW

Stock

1349

Min.Order

25

Region

AMERICA Order Now

MOUSER

Stock

1174

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

16

Min.Order

1

Region

EUROPE Order Now

RUTRONIK

Stock

5000

Min.Order

25

Region

EUROPE Order Now

Distributor reported inventory date: 2020-08-10

ECCN (EU)

NEC

Packing Type

Poly Bag

Package

RD-91

Operating Temperature (°C)

(min)

-

(max)

-

Quadrants

I, II, III

Triggering gate current max (mA) (I, II, III)

50, 50, 50

Triggering gate current max (mA) (I, II, III, IV)

-

Repetitive peak off-state voltage (V) (max)

800

Budgetary Price (US$)* / Qty

Country of Origin

PHILIPPINES

(*) 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