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  • Available in through-hole, the T12T series of Triacs can be used as on/off or phase angle control function in general purpose AC switching where high commutation capability is required.

    This series can be designed in many value sensitive appliances thanks to the parameters guidance provided in the following pages.
    Provides insulation rated at 2500 V rms (TO-220AB insulated package).

    Key Features

    • Medium current Triac
    • High static and dynamic commutation
    • Low thermal resistance with clip bonding
    • Packages is RoHS (2002/95/EC) compliant
    • 600 V VRM
    • UL certified (ref. file E81734)

Recommended for you

Related Applications

Lighting and Controls

00 Files selected for download

Technical Documentation

    • Description Version Size Action
      DS6527
      Snubberless™, logic level and standard 12 A Triacs
      3.0
      188.12 KB
      PDF
      DS6527

      Snubberless™, logic level and standard 12 A 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
      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
      AN2986

      AC switch triggering with 3.3 V power supply

      AN4993

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

    • 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
      T series high-dynamic Triacs PSpice model (.lib) and symbols (.olb) 5.0
      16.63 KB
      ZIP

      T series high-dynamic 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
      T-series TRIACs for innovative and safer AC load control 1.0
      697.74 KB
      PDF
      T-series Triacs: immunity and commutation driven for AC appliances 3.0
      676.39 KB
      PDF

      ST Thyristor Finder: SCRs and Triacs on Android and iOS

      T-series TRIACs for innovative and safer AC load control

      T-series Triacs: immunity and commutation driven for AC appliances

    • 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**
T1225T-6I
Active
TO-220AB Ins Industrial Ecopack2

T1225T-6I

Package:

TO-220AB Ins

Material Declaration**:

PDF XML

Marketing Status

Active

Package

TO-220AB Ins

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
Package
Packing Type
Marketing Status
ECCN (US)
Country of Origin
Budgetary Price (US$)*/Qty
T1225T-6I No availability of distributors reported, please contact our sales office TO-220AB Ins Tube
Active
EAR99 CHINA 0.463 / 100

T1225T-6I

Package

TO-220AB Ins

Packing Type

Tube

Budgetary Price (US$)*/Qty

0.463 / 100

Marketing Status

Active

Budgetary Price (US$)* / Qty

0.463 / 100

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