Schottky barrier diodes

schottky barrier diode symbol

Featuring low forward voltage drop and negligible recovery, ST's Schottky diodes ensure higher switching speeds and better system efficiency from 15 up to 200 V. Made of robust avalanche capable technologies, many are available in both industrial and automotive versions.

With several series with forward voltage drops from 15 to 200 V, our small-signal and power Schottky diodes ensure the best efficiency for your applications. Recent packages development are 1mm-thick SMA Flat and SMB Flat packages as well as our latest D²PAK and PowerFLAT™ packages for enhanced power density. For other compact designs, many devices are tightly packed surface-mount devices or using through-hole encapsulation. Featuring a robust avalanche performance, ST Schottky diodes are rated for use in switched-mode power supplies (SMPS).

To ensure the most efficient, compact and rugged solutions for power conversion applications, ST provides a useful set of tools to help engineers get the most from their designs.

The ST Diode Finder mobile app is a user-friendly product selector ensuring a smooth and simple navigation experience and includes a parametric search engine that lets you rapidly identify the right product that best fits your application.

Our online, waveform-driven, Schottky & FERD eTool simulator is a simple, straightforward way to calculate power losses when selecting Schottky or field-effect rectifier diodes (FERD) and further optimize your designs.


ST’s Schottky diodes are suitable for semi-slim or slim-type notebook adapters, solar panel junction boxes, power converters, low voltage OR-ing and 48 V converters, welding equipment, and LED lighting as well as automotive applications.

Product types:

ST’s Schottky barrier diodes are available in small-signal and power Schottky. They are divided in 3 subfamilies:

The workhorse of power electronics, our range of power Schottky diodes covers reverse voltage capabilities from 15 to 200 V and currents from 1 to 240 A.
Featuring low forward voltage drop and zero or negligible recovery charges, these diodes are available in packages suited for a wide range of applications from 3 A SMA flat surface-mount devices for LED supply circuits up to 3 A TO-277A packages for automotive auxiliary converters and isolated 240 A ISOTOP packages for welding systems.
Versatile components used across multiple industry segments, our small-signal Schottky diodes have a durable footprint for signal-routing tasks, rail-to-rail protection and RF applications, such as balanced mixers and demodulators.
Our portfolio of small-signal Schottky barrier diodes offer forward voltages from 200 mV to 1 V with repetitive peak reverse voltages from 10 to 100 V in packages ranging from axial devices to chip scale package (CSP) perfect for smartphones, handhelds and wearables.

Discover our Portfolio


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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Solar Battery Charger

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

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


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