Overview
Sample & Buy
Solutions
Resources
Tools & Software
Quality & Reliability
eDesignSuite
Get Started
Partner products
Sales Briefcase
  • The ACST8 series belongs to the ACS/ACST power switch family built around A.S.D. (application specific discrete) technology. This high performance device is suited to home appliances or industrial systems and drives an induction motor up to 8 A.

    This ACST8 device embeds a Triac structure with a high voltage clamping device to absorb the inductive turn off energy and withstand line transients such as those described in the IEC 61000-4-5 standards.
    ACST8 shows a high noise immunity complying with IEC standards such as IEC 61000-4-4 (fast transient burst test).

    Key Features

    • Triac with overvoltage protection
    • High noise immunity: static dV/dt > 2000 V/μs
    • TO-220FPAB insulated package:
      • complies with UL standards (file ref: E81734)
      • insulation voltage: 2000 VRMS

Circuit Diagram

Download Download

Recommended for you

00 Files selected for download

Technical Documentation

    • Description Version Size Action
      DS2106
      Overvoltage protected AC switch
      10.0
      342.28 KB
      PDF
      DS2106

      Overvoltage protected AC switch

    • 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
      AN441
      Inductive load control with AC switches
      3.2
      712.21 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
      AN3168
      Non-insulated SCR / Triac control circuits
      1.2
      315.8 KB
      PDF
      AN2703
      Parameter list for SCRs, TRIACs, AC switches, and DIACS
      2.6
      98.99 KB
      PDF
      AN533
      SCRs, TRIACs, and AC switches, thermal management precautions for handling and mounting
      3.6
      217.19 KB
      PDF
      AN2991
      Single-phase induction motor drive for refrigerator compressor application (formerly AN1354)
      2.2
      256.33 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

      AN441

      Inductive load control with AC switches

      AN4564

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

      AN3168

      Non-insulated SCR / Triac control circuits

      AN2703

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

      AN533

      SCRs, TRIACs, and AC switches, thermal management precautions for handling and mounting

      AN2991

      Single-phase induction motor drive for refrigerator compressor application (formerly AN1354)

      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
      8.0
      417.06 KB
      PDF
      TN1173

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

HW Model, CAD Libraries & SVD

    • Description Version Size Action
      ACST series overvoltage protected AC switches PSpice model (.lib) and symbols (.olb) 5.0
      13.63 KB
      ZIP

      ACST series overvoltage protected AC switches PSpice model (.lib) and symbols (.olb)

Publications and Collaterals

    • Description Version Size Action
      ACST series : overvoltage protected AC switches 2.0
      1.35 MB
      PDF
      ST Thyristor Finder: SCRs and Triacs on Android and iOS 1.0
      854.07 KB
      PDF

      ACST series : overvoltage protected AC switches

      ST Thyristor Finder: SCRs and Triacs on Android and iOS

Quality and Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
ACST830-8FP
Active
TO-220FPAB Industrial Ecopack2
ACST830-8GTR
Active
D2PAK Industrial Ecopack1
ACST830-8T
Active
TO-220AB Industrial Ecopack2

ACST830-8FP

Package:

TO-220FPAB

Material Declaration**:

PDF XML

Marketing Status

Active

Package

TO-220FPAB

Grade

Industrial

RoHS Compliance Grade

Ecopack2

ACST830-8GTR

Package:

D2PAK

Material Declaration**:

PDF XML

Marketing Status

Active

Package

D2PAK

Grade

Industrial

RoHS Compliance Grade

Ecopack1

ACST830-8T

Package:

TO-220AB

Material Declaration**:

Marketing Status

Active

Package

TO-220AB

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

Part Number
Order from Distributors
Order from ST
Marketing Status
ECCN (US)
ECCN (EU)
Packing Type
Package
Temperature (°C) Triggering gate current max (mA) (I, II, III)
Budgetary Price (US$)*/Qty
More info
min
max
ACST830-8FP Available at 3 distributors

Distributor availability ofACST830-8FP

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 686 1 Order Now
AVNET AMERICA 323 0 Order Now
MOUSER WORLDWIDE 1958 1 Order Now

Distributor reported inventory date: 2020-09-18

Distributor Name

DIGIKEY

Stock

686

Min.Order

1

Region

WORLDWIDE Order Now

AVNET

Stock

323

Min.Order

0

Region

AMERICA Order Now

MOUSER

Stock

1958

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2020-09-18

Buy now
Active
EAR99 NEC Tube TO-220FPAB - - 30, 30, 30
MORE INFO

Rising Ratio Of Off Voltage (V/µs) (min) (@ TJ(Max) ):

2000

Rate of decrease of commutating on-state current (A/ms) (min) (@ TJ(Max) ):

8

Unit Price (US$):

-

Country of Origin:

CHINA

ACST830-8T Available at 2 distributors

Distributor availability ofACST830-8T

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 924 1 Order Now
MOUSER WORLDWIDE 1046 1 Order Now

Distributor reported inventory date: 2020-09-18

Distributor Name

DIGIKEY

Stock

924

Min.Order

1

Region

WORLDWIDE Order Now

MOUSER

Stock

1046

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2020-09-18

Buy now
Active
EAR99 NEC Tube TO-220AB - - 30, 30, 30
MORE INFO

Rising Ratio Of Off Voltage (V/µs) (min) (@ TJ(Max) ):

2000

Rate of decrease of commutating on-state current (A/ms) (min) (@ TJ(Max) ):

8

Unit Price (US$):

-

Country of Origin:

CHINA

ACST830-8GTR Available at 3 distributors

Distributor availability ofACST830-8GTR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 194 1 Order Now
RS COMPONENTS EUROPE 60 1 Order Now
MOUSER WORLDWIDE 425 1 Order Now

Distributor reported inventory date: 2020-09-18

Distributor Name

DIGIKEY

Stock

194

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

60

Min.Order

1

Region

EUROPE Order Now

MOUSER

Stock

425

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2020-09-18

Sample & Buy Buy now
Active
EAR99 NEC Tape And Reel D2PAK - - 30, 30, 30
MORE INFO

Rising Ratio Of Off Voltage (V/µs) (min) (@ TJ(Max) ):

2000

Rate of decrease of commutating on-state current (A/ms) (min) (@ TJ(Max) ):

8

Unit Price (US$):

-

Country of Origin:

CHINA

ACST830-8FP

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

Distributor availability ofACST830-8FP

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 686 1 Order Now
AVNET AMERICA 323 0 Order Now
MOUSER WORLDWIDE 1958 1 Order Now

Distributor reported inventory date: 2020-09-18

Distributor Name

DIGIKEY

Stock

686

Min.Order

1

Region

WORLDWIDE Order Now

AVNET

Stock

323

Min.Order

0

Region

AMERICA Order Now

MOUSER

Stock

1958

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2020-09-18

ECCN (EU)

NEC

Packing Type

Tube

Package

TO-220FPAB

Operating Temperature (°C)

(min)

-

(max)

-

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

30, 30, 30

Rising Ratio Of Off Voltage (V/µs) (min) (@ TJ(Max) )

2000

Rate of decrease of commutating on-state current (A/ms) (min) (@ TJ(Max) )

8

Budgetary Price (US$)* / Qty

Country of Origin

CHINA

ACST830-8T

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

Distributor availability ofACST830-8T

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 924 1 Order Now
MOUSER WORLDWIDE 1046 1 Order Now

Distributor reported inventory date: 2020-09-18

Distributor Name

DIGIKEY

Stock

924

Min.Order

1

Region

WORLDWIDE Order Now

MOUSER

Stock

1046

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2020-09-18

ECCN (EU)

NEC

Packing Type

Tube

Package

TO-220AB

Operating Temperature (°C)

(min)

-

(max)

-

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

30, 30, 30

Rising Ratio Of Off Voltage (V/µs) (min) (@ TJ(Max) )

2000

Rate of decrease of commutating on-state current (A/ms) (min) (@ TJ(Max) )

8

Budgetary Price (US$)* / Qty

Country of Origin

CHINA

ACST830-8GTR

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

Distributor availability ofACST830-8GTR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 194 1 Order Now
RS COMPONENTS EUROPE 60 1 Order Now
MOUSER WORLDWIDE 425 1 Order Now

Distributor reported inventory date: 2020-09-18

Distributor Name

DIGIKEY

Stock

194

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

60

Min.Order

1

Region

EUROPE Order Now

MOUSER

Stock

425

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2020-09-18

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

D2PAK

Operating Temperature (°C)

(min)

-

(max)

-

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

30, 30, 30

Rising Ratio Of Off Voltage (V/µs) (min) (@ TJ(Max) )

2000

Rate of decrease of commutating on-state current (A/ms) (min) (@ TJ(Max) )

8

Budgetary Price (US$)* / Qty

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