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Transient Voltage Suppressors (TVS)

A transient voltage suppressor (TVS) is an avalanche diode specially designed to clamp overvoltages and dissipate high transient power surges. ST’s Transil™ protection devices are able to shunt a high current surge for a short duration.

Solid-state, monolithic PN junction devices, transient voltage suppressors are used alongside sensitive semiconductors in a parallel protection configuration to ensure protection against electrical overstress (EOS) or electrostatic discharges (ESD).

TVS devices offer many advantages compared to a metal-oxide varistor (MOV) because there are no ageing effects, which ensure stability over time for better reliability.

Providing higher quality and robustness, TVS designs are preferred over Zener solutions, which are rated with low DC current and aren’t specified for surges.

High-performance TVS devices

ST’s TVS portfolio provides a unique choice of high-performance devices, available in industrial- and automotive-grade (AEC-Q101) versions, to ensure compliance with all regulatory requirements and standards.

Our latest generation of TVS diodes delivers market-leading power density, designed for a large diversity of industrial and automotive applications.

TVS: two operating modes to best fit your application

    Transient voltage suppressors have one of two different operating modes:
  • Normal mode, where the device is transparent for the application (low leakage current)
  • Surge suppression mode, where the overvoltage is cut at the clamping voltage value

Applications:

Product types:

While electronic systems and integrated circuits needs a power source to operate, this power supply can be the source of surges with a high risk of fatal damage. These hostile events can be caused by power line power-up, or instability, or even lightning strikes residuals.

Our mission with our TVS series is to protect electronic systems and integrated circuits against these EOS (electrical over stress), by clamping the surge voltage to a level as low as possible, compatible with the system.
TVS diodes are the best solution to protect against power surges, without short-circuiting the line, to system under full operation.

TVS devices offer many advantages compared to a metal-oxide varistor (MOV) because there are no ageing effects, which ensure stability over time for better reliability.
Providing higher quality and robustness, TVS designs are preferred over Zener solutions, which are rated with low DC current and aren’t specified for surges.

The planar technology used for die and robust clip assembly, makes this device compatible with high-end circuits where low leakage current and high junction temperature are required to provide reliability and stability over time.

Our TVS series are the only one to provide full power capability against temperature, where competitors are facing a power derating, lowering the protection level.

Our latest generation of TVS diodes delivers market-leading power density, designed for a large diversity of industrial and automotive applications.

Discover our portfolio

TVS product mapping based on 10/1000µs surge capability, illustrating our power capability roadmap

TVS product mapping

Micro package TVS product mapping to support IEC61000-4-5 surge

Micro package TVS

Benefits

  • Quickly select the best TVS calculated by the tool based on the surge input and the maximum voltage of your application.
  • Simple to use: select the most suited TVS in few clicks, according to the targeted ambient temperature.
  • Easy access: download TVS simulator on your desktop

TVS simulator

Get the right protection with ST's smart selection tool and electrothermal models

Featured application note

Discover our Electro-thermal PSPICE models for transient voltage suppressor (TVS).

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