意法半导体的产品包括采用电流范围1~50 A的三端双向可控硅(Triac)的中等功率交流负载,电压范围为600~800V,某些工业器件的电压可达1200 V。 

由于可驱动电压范围为120~500 V的交流负载,受益于意法半导体的三端双向可控硅元件的电路包括调光器、所有类型交流电源通断开关、家用或办公用复印/打印设备、工业电机起动器或SSR、园艺工具、自动灌溉系统,以及面向工厂、楼宇和住宅的各种自动化控制器。

  • 高压triac专门用于工业和三相电源开关应用。
  • 我们的8T triac设计用于确保需要优化空间电路中的高开关性能,是EMI约束较高应用的理想选择,而6H triac8H triac则适用于散热限制较高的应用
  • 我们的标准triac与snubberless™ triac拥有全面的栅极驱动可能性和封装,涵盖所有电源开/关和相位角切换需求。
  • 我们的ACS™ AC开关具有过压保护功能和适用于家用电器和灌溉设备(包括电磁执行器和泵)的高电感负载开关功能,而我们的ACST triac专为全天候运行设备中的更高负载而设计。


Ease your transition to surface-mount Triacs with our extended D²PAK portfolio

意法半导体进一步扩展了其面向Triac的D²PAK解决方案,适用于紧凑型设计。该Triac D²PAK的部件工作电流范围8-30 A,特别适用于家庭和工厂自动化,允许使用绝缘金属基板(IMS)和直接敷铜板进行创新设计。

800 V T-series triacs outrun competition for load control

800 V T-series high-performance triacs are designed for AC loads in industrial control and home appliances, enabling innovative and safe AC load control. With immunity (dV/dt) up to twice as high and commutation capability (dI/dt)c up to 5 times as good as state-of-art Triacs, this high-performance 800 V T-series triacs enables circuits to be more robust to EMI and loads to be fully controlled, with no disturbances. Its low gate current down to 10 mA helps optimize the power supply and allows direct drive capability through a single resistance between the microcontroller and Triac. 800 V T-series triacs are housed in TO-220AB, TO-220FPAB and now in D2PAK.



eDesignSuite is a comprehensive set of easy-to-use design-aid utilities ready to help you streamline the system development process with a wide range of ST products.

Power Management Design Center

Thermal-electrical Simulators for Components

Signal Conditioning Design Tool

NFC/RFID Calculators

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Power Supply Design Tool

SMPS design, by topology, by type and by product
PFC design with analog and digitial control
Supports various PCB configurations
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LED Lighting Design Tool

Handles AC-DC and DC-DC design in common topologies
Displays interactive and annotated schematic
Provides current/voltage graphs, Bode plots, efficiency curves and power-loss data
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Digital Power Workbench

Provides a step-by-step optimized design of power section and control loop
Generates the STM32Cube embedded software package for custom applications and allows firmware project generation, compatible with multiple STM32 IDEs
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ZVS Totem Pole PFC
Vienna Rectifier
3-Level T-type Converter

Power Tree Designer

Specify input/output power for each node in the tree
Check for consistency
Design each individual node
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AC Switches Simulator

Select ratings and application waveforms
Get junction temperature and blocking voltage graphs
Search and sort suitable devices

Rectifier Diodes Simulator

Select ratings and application waveforms
Estimate power losses
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Supports long mission profiles
Provides power loss and temperature graphs
Helps define heatsink thermal properties

Twister Sim

Help select the right ViPOWER Automotive power device
Supports load-compatibility, wiring harness optimization, fault condition impact and diagnostic analysis
Supports various PCB configurations

TVS Simulator

Specify system ratings and surge waveform
Search and sort suitable devices
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Active Filters

Handles multi-stage-designs and common topologies
Returns circuit component values
Provides gain, phase and group delay graphs
Low Pass, High Pass and Band Pass


Handles most common configurations
Returns circuit components values
Provides I/O signal waveforms
Inverting, Non Inverting, Window

Low side Current Sensing

Returns circuit component values
Provides current error graphs

High side Current Sensing

Provides current error graphs.
Help to select the right High side current sensing and shunt devices.
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NFC Inductance

Input geometry and substrate properties
Get antenna impedance

UHF Link Budget

Enter forward and reverse link characteristics
The tool returns link budget estimate

NFC Tuning Circuit

Enter antenna parameter and matching target
Select the topology of the matching network
The tool returns component values for the desired design targets