ST power Schottky diodes combine low voltage-drop characteristics with negligible or zero recovery. Their range spans 15 to 200 V voltages and 1 to 240 A currents. It covers all application needs from low voltage OR-ing and 48 V converters, to higher voltage battery chargers and welding equipment.
Power Schottky diodes are part of the STPOWER range.
Main applications:
Product types:
They excel in low voltage SMPS rectification with their 20-60 V range.
These devices offer a 150°C junction temperature and enable power efficiency and high current density in restricted-space designs.
New trench Schottky diodes:
The newest ST Schottky diode range on the market covers 28 devices in 100V trench technology at medium power (1 to 15 A).
A prime example of how these new trench devices increase power density is the 8 A, 100 V STPST8H100SF, with low voltage drop and the ability to fit in a compact PSMC package, which is generally not possible for conventional 100 V Schottky diodes. The trench diode design benefits applications from tiny appliance adaptors (STPST8H100SF has a 30 mm² footprint) to automotive power actuators (-SFY suffix for this 8-amp device). Together with the D2PAK and PSMC surface mount power housings, the slimmer 1-mm SOD123Flat, SOF128Flat, and SMB Flat packages enable considerably smaller circuit module designs.
Main Schottky range:
ST Schottky diodes offer flexible package options in various through-hole and surface mount outlines. The new PowerFLAT package enables higher power density for 30 V and 45 V bypass diodes, and is ideal for solar panel junction boxes. Power Schottky rectifiers rated at 60 V, 80 V, 100 V, and 120 V are now available in the narrow-lead TO-220AB through-hole package that allows flush placement on a PCB, which is ideal for slim-design notebook adapters.
The new SMA Flat, SMB Flat, and PSMC packages are tailored for power Schottky rectifiers in slim equipment designs. SMA Flat and SMB Flat can be used in LED lighting, battery-powered equipment, consumer, and power converters in harsh industrial environments. The packages are covered by our 10-year longevity commitment and are compatible with reflow and wave-soldering (notch).
An excellent example is the STPS3170 with a 100-mV reduction in voltage drop and lower switching losses, which no bipolar diode can achieve. These features render this new 3 A 170 V SMA Flat Schottky diode ideal for high frequency and hot operating conditions, such as LED lighting.
Discover our portfolio
Trench Schottky diode range:
The 100 V trench Schottky diodes are available in surface mount versions covering a total of 28 industrial and automotive-grade devices. The packages and current ratings fulfill the requirements for compact converters, including SMPS and automotive auxiliary supplies and actuators.
Benefits
- Lower forward voltage
- Greater integration
- Higher power integration
- Widest range of packages on the market
Featured Videos
Getting started with Schottky and FERD eTool video
Ultra Low Vf 100V Power Schottky Trench diodes
Only 1-mm thick, new Schottky diodes for lighter and slimmer power modules
Housed in the SOD123Flat, SOD128Flat – 1 mm thick only (12 and 26 mg) – ST’s 40, 60, 100 V power Schottky rectifiers are tailored for miniature LED lighting, battery-powered equipment, power converters, motor drives and equipment installed in harsh industrial environments thanks to a Tj range from –40 to 175 °C.
Almost 60% thinner than the standard SMA package – while fully footprint compatible – designers can create lighter and slimmer modules or use these as replacements in existing designs, choosing to increase their application efficiency with the ‘L’ series featuring a low forward voltage drop, or pushing the limit of thermal runaway risk with the high-temperature ‘H’ series.
In addition, ST’s 40, 60, 100 V and 200V power Schottky rectifiers are now available in the new SMA Flat and SMB Flat packages providing even more power density in 1 mm thick only. They are fully compatible with SMA and SMB PCB footprints and even with SOD128 footprint.
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
Power Supply Design Tool
SMPS design, by topology, by type and by product PFC design with analog and digitial control Supports various PCB configurations 
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 
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 
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 Search and sort suitable devices 
STPOWER Studio
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 
Estimate
Build simple schematics and firmware inputs in minutes Quickly generate reliable estimates of: Battery life System power consumption Bill of materials costs 
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 
Comparators
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. 
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