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SM4T82AY
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Design Win
Automotive 400 W, 70 V TVS in SMA

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Product overview

Description

The SM4TY series are designed to protect sensitive automotive circuits against surges defined in ISO 7637-2 and against electrostatic discharges according to ISO 10605.

The Planar technology makes it compatible with high-end circuits where low leakage current and high junction temperature are required to provide long term reliability and stability. SM4TY devices are packaged in SMA (SMA footprint in accordance with IPC 7531 standard).

  • All features

    • AEC-Q101 qualified
    • Peak pulse power:
      • 400 W (10/1000 μs)
      • 2.3 kW (8/20 μs)
    • Stand-off voltage range from 5 V to 70 V
    • Unidirectional and bidirectional types
    • Low leakage current:
      • 0.2 µA at 25 °C
      • 1 μA at 85 °C
    • Operating Tj max: 150 °C
    • JEDEC registered package outline
    • Resin meets UL94, V0
    Read more Read less

eDesignSuite

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

Choose design tool:

Power Management Design Center

Power Supply Design Tool

• SMPS design, by topology, by type and by product
• PFC design with analog and digitial control
• Supports various PCB configurations
Choose type:
DC/DC
AC/DC
Solar Battery Charger

Power Management Design Center

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
Choose type:
DC/DC
AC/DC

Power Management Design Center

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

Power Management Design Center

Power Tree Designer

• Specify input/output power for each node in the tree
• Check for consistency
• Design each individual node
Choose design tool:

Thermal-electrical Simulators for Components

STPOWER Studio

• Supports long mission profiles
• Provides power loss and temperature graphs
• Helps define heatsink thermal properties

Thermal-electrical Simulators for Components

PCB Thermal Simulator

• Thermal analysis of a PCB from Gerber files.
• Possibility to add heat sources, heat sinks, copper areas and thermal paths.
• Powerful server-side engine for rendering and simulation.
• Thermal results shown graphically via 2D table.

Thermal-electrical Simulators for Components

AC Switches Simulator

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

Thermal-electrical Simulators for Components

Rectifier Diodes Simulator

• Select ratings and application waveforms
• Estimate power losses
• Search and sort suitable devices
• test

Thermal-electrical Simulators for Components

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

Thermal-electrical Simulators for Components

TVS Simulator

• Specify system ratings and surge waveform
• Search and sort suitable devices

Thermal-electrical Simulators for Components

Estimate

• Build simple schematics and firmware inputs in minutes
• Quickly generate reliable estimates of battery life, system power consumption and bill of materials costs
Choose design tool:

Signal Conditioning Design Tool

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

Signal Conditioning Design Tool

Comparators

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

Signal Conditioning Design Tool

Low side Current Sensing

• Returns circuit component values
• Provides current error graphs

Signal Conditioning Design Tool

High side Current Sensing

• Provides current error graphs.
• Help to select the right High side current sensing and shunt devices.
Choose design tool:

NFC/RFID Calculators

NFC Inductance

• Input geometry and substrate properties
• Get antenna impedance

NFC/RFID Calculators

UHF Link Budget

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

NFC/RFID Calculators

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

EDA Symbols, Footprints and 3D Models

STMicroelectronics - SM4T82AY

Speed up your design by downloading all the EDA symbols, footprints and 3D models for your application. You have access to a large number of CAD formats to fit with your design toolchain.

Please select one model supplier :

Start your design with UltraLibrarian
Start your design with SamacSys
Symbols

Symbols

Footprints

Footprints

3D model

3D models

All resources

Expand all categories
Available documentation resources
Resource title
Version
Latest update
Actions Details Download

SPICE models (4)

Resource title
Version
Latest update
Actions Options
sm4ty-series Electro-thermal PSpice model (.lib) and symbols (.olb) for Orcad
2.0 12 May 2025
ZIP
12 May 2025
sm4ty-series Electro-thermal PSpice model (.lib) and symbols (.olb) for Orcad 2.0
sm4ty-series Electro-thermal model (.lib) for LTspice
2.0 12 May 2025
ZIP
12 May 2025
sm4ty-series Electro-thermal model (.lib) for LTspice 2.0
sm4ty-series Electro-thermal model (.lib) for SIMetrix and eDSim
2.0 14 May 2025
ZIP
14 May 2025
sm4ty-series Electro-thermal model (.lib) for SIMetrix and eDSim 2.0
sm4ty-series PSpice model (.lib) and symbols (.olb)
1.0 10 May 2021
ZIP
10 May 2021
sm4ty-series PSpice model (.lib) and symbols (.olb) 1.0

CAD Symbol & Footprint models (2)

Resource title
Version
Latest update
Actions Options
sm4txxay Altium Symbol and Footprint files
1.0 15 May 2020
ZIP
15 May 2020
sm4txxay Altium Symbol and Footprint files 1.0
sm4txxay Orcad Symbol and Footprint files
1.0 25 Mar 2022
ZIP
25 Mar 2022
sm4txxay Orcad Symbol and Footprint files 1.0

Quality and Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Longevity Commitment Longevity Starting Date Material Declaration**
SM4T82AY
Active
SMA Automotive Ecopack2 - -

SM4T82AY

Package:

SMA

Material Declaration**:

More Info

Marketing Status

Active

Package

SMA

Grade

Automotive

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

(*) Suggested Resale Price (USD) per defined quantity for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors