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HomeProductsDiscrete Semiconductor ProductsThyristors - TRIACsACST2-8SB
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ACST2-8SB - STMicroelectronics

Manufacturer Part Number
ACST2-8SB
Manufacturer
STMicroelectronics
Allelco Part Number
32D-ACST2-8SB
Warranty
1 Year Allelco Warranty - Find out more
Parts Description
TRIAC SENS GATE 800V 2A DPAK
Package
DPAK
Data sheet
1.ACST2-8SB.pdf ...

Datasheets

ACST2.pdf
RoHs Status
ROHS3 Compliant
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Specifications

ACST2-8SB Tech Specifications
STMicroelectronics - ACST2-8SB technical specifications, attributes, parameters and parts with similar specifications to STMicroelectronics - ACST2-8SB

Product Attribute Attribute Value  
Manufacturer STMicroelectronics  
Voltage - Off State 800 V  
Voltage - Gate Trigger (Vgt) (Max) 1.1 V  
Triac Type Logic - Sensitive Gate  
Supplier Device Package DPAK  
Series -  
Package / Case TO-252-3, DPak (2 Leads + Tab), SC-63  
Package Tube  
Product Attribute Attribute Value  
Operating Temperature -40°C ~ 125°C (TJ)  
Mounting Type Surface Mount  
Current - On State (It (RMS)) (Max) 2 A  
Current - Non Rep. Surge 50, 60Hz (Itsm) 8A, 8.4A  
Current - Hold (Ih) (Max) 10 mA  
Current - Gate Trigger (Igt) (Max) 10 mA  
Configuration Single  
Base Product Number ACST2  

Environmental & Export Classifications

ATTRIBUTE DESCRIPTION
RoHs Status ROHS3 Compliant
Moisture Sensitivity Level (MSL) 1 (Unlimited)
REACH Status REACH Unaffected
ECCN EAR99
HTSUS 8541.30.0080

Parts Introduction

Manufacturer Part Number

ACST2-8SB

Manufacturer

stmicroelectronics

Introduction

ACST2-8SB is a sensitive gate logic type Triac, designed for AC switching and phase control applications.

Product Features and Performance

Sensitive Gate Logic Type Triac

Maximum On-State Current: 2A

Off-State Voltage: 800V

Gate Trigger Voltage (Vgt) Maximum: 1.1V

Non-Repetitive Surge Current (50/60Hz): 8A, 8.4A

Gate Trigger Current (Igt) Maximum: 10 mA

Hold Current (Ih) Maximum: 10 mA

Operating Temperature Range: -40°C to 125°C

Product Advantages

High voltage capacity (800V) ideal for power applications

Low gate trigger current (10 mA) for easier control

Built to handle high surge currents up to 8.4A, enhancing reliability

Sensitive gate allows for triggering by microcontrollers

Key Technical Parameters

Maximum On-State Current: 2A

Maximum Off-State Voltage: 800V

Maximum Gate Trigger Voltage: 1.1V

Maximum Gate Trigger Current: 10 mA

Temperature Range: -40°C to 125°C

Quality and Safety Features

Handles high surge currents

Operates reliably over a wide temperature range

Compatibility

Compatible with microcontroller-based systems for Triac triggering

Application Areas

Home appliance controls

Fan controllers

Light dimmers

Electric heater controllers

Product Lifecycle

Status: Obsolete

Note: Consider seeking newer models or consult the manufacturer for replacements and upgrades.

Several Key Reasons to Choose This Product

High voltage capability for robust power handling

Sensitive gate logic type facilitating easier interfacing with control circuits

Capable of handling surge currents making it reliable for applications requiring high durability

Surface mount package (DPAK) allows for compact PCB design

Parts with Similar Specifications

The three parts on the right have similar specifications to STMicroelectronics ACST2-8SB

Product Attribute ACST2-8SB-TR ACST2-8SFP ACST210-8BTR ACST210-8B
Part Number ACST2-8SB-TR ACST2-8SFP ACST210-8BTR ACST210-8B
Manufacturer STMicroelectronics STMicroelectronics STMicroelectronics STMicroelectronics
Package / Case - 196-LFBGA 16-DIP (0.300', 7.62mm) 64-VFQFN Exposed Pad
Voltage - Off State - - - -
Triac Type - - - -
Supplier Device Package - 196-NFBGA (12x12) 16-PDIP 64-VQFN (9x9)
Current - On State (It (RMS)) (Max) - - - -
Base Product Number - DAC34H84 MAX500 ADS62P42
Series - - - -
Mounting Type - Surface Mount Through Hole Surface Mount
Current - Non Rep. Surge 50, 60Hz (Itsm) - - - -
Current - Gate Trigger (Igt) (Max) - - - -
Package - Tape & Reel (TR) Tube Tape & Reel (TR)
Voltage - Gate Trigger (Vgt) (Max) - - - -
Current - Hold (Ih) (Max) - - - -
Configuration - - - S/H-ADC
Operating Temperature - -40°C ~ 85°C 0°C ~ 70°C -40°C ~ 85°C

ACST2-8SB Datasheet PDF

Download ACST2-8SB pdf datasheets and STMicroelectronics documentation for ACST2-8SB - STMicroelectronics.

Datasheets
ACST2.pdf

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Customer Reviews

Evaluation: 10 Articles

  • Jess***Jones
    Apr 17, 2026

    It offers good value for the price, and the specifications match the description. I’ve been using it for two days with no issues, and I’ll definitely buy it again if I need it in the future.

  • Mich***Smith
    Apr 17, 2026

    Shipping was on time, the component pins are neatly aligned, and I tested 10 of them with a multimeter—all readings were within the specified range. Highly recommended.

  • Aman***arris
    Apr 3, 2026

    It was great—the entire process, from placing the order to receiving the package, went very smoothly. The components were consistent, the price was fair, and I had a very pleasant shopping experience.

  • Mike***nch
    Apr 3, 2026

    Better than expected! The resistance and capacitance readings were spot-on, and it passed the test on the first try. The service was reliable, and the packaging was thoughtful—I highly recommend it.

  • Daic***K.
    Mar 23, 2026

    Very good. No issue after long time testing.

  • Kevi***.
    Mar 17, 2026

    Fast switching and stable output. Very satisfied with this IC

  • Daou***hekebkeb
    Jun 16, 2024

    I had a great experience purchasing items from Allelcoelec, I recommend

  • Uri ***al
    Jun 19, 2024

    Good comunication,
    Transpnt regarding the process and price.

  • Yaqu***l Ali
    Jun 19, 2024

    Providing reasonable prices, regular follow-up of orders, providing accurate and regular invoices, timely delivery of goods, excellent customer service and providing original goods and best quality materials.

  • Lea ***
    Jun 19, 2024

    Morrey was very helpful and right on top of things!
    He replied quickly to my RFQ. He was very courteous and professional.

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Shipment

Delivery Time

In-stock items can be shipped within 24 hours. Some parts will be arranged for delivery within 1-2 days from the date all items arrive at our warehouse. And Allelco ships order once a day at about 17:00, except Sunday. Once the goods are shipped, the estimated delivery time depends on the shipping methods and Delivery destination. The table below shows are the logistic time for some common countries.

Delivery Cost

  1. Use your express account for shipment if you have one.
  2. Use our account for the shipment. Refer to the table below for the approximate charges.
(Different time frame / countries / package size has different price.)

Delivery Method

  1. Global Common Shipment by DHL / UPS / FedEx / TNT / EMS / SF we support.
  2. Others more shipping ways, please get in touch with your customer manager.

Common Countries Logistic Time Reference
Region Country Logistic Time(Day)
America United States 5
Brazil 7
Europe Germany 5
United Kingdom 4
Italy 5
Oceania Australia 6
New Zealand 5
Asia India 4
Japan 4
Middle East Israel 6
DHL & FedEx Shipment Charges Reference
Shipment charges(KG) Reference DHL(USD$)
0.00kg-1.00kg USD$30.00 - USD$60.00
1.00kg-2.00kg USD$40.00 - USD$80.00
2.00kg-3.00kg USD$50.00 - USD$100.00
Note:
The above table is for reference only. There may have some data bias for the uncontrollable factors.
Contact us if you have any questions.

Payment Support

The payment method can be chosen from the methods shown below: Wire Transfer (T/T, Bank Transfer), Western Union, Credit card, PayPal.

Your Faithful Supply Chain Partner -

Contact us if you have any questions.

  1. Phone
    +00852 9146 4856

Certifications & Memberships

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ACST2-8SB Image

ACST2-8SB

STMicroelectronics
32D-ACST2-8SB

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