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Diodes and rectifiers

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Power supply and inverter designers must comply with standards and market demands for higher efficiency, smaller form factors, and more durable converters. ST has recently added silicon carbide diodes alongside its consolidated range of Schottky and ultrafast bipolar to ensure that designers find the right devices for their application.

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Applications:

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Industrial
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Automotive

Product types:

Car pictogram for automotive grade diodes
Automotive-grade diodes
ST automotive diodes are qualified to the AEC-Q101 standard and suitable for DC-DC converters. The new dual diodes in the PSMC package offer an optimized portfolio for high-performance DC-DC converters and auxiliary power supplies.
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Bridge rectifier diodes symbol
Bridge rectifier diodes
The 800 and 1200 V devices are ideal for AC mains front-end rectifier bridges in medium power converters. 15 and 60 A versions are available with appropriate ruggedness for operation in robust industrial and automotive applications.
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Ferd symbol
Filed effect rectifiers
These rectifiers complement Schottky diodes at lower current densities. Their threshold voltage is lower and the power losses remain low, even in light-load operation. FERDs are available from 45 V to the 100 V diode commonly used in flyback topology chargers.
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Ultrafast symbol
Ultrafast rectifiers
These diodes are in full evolution as converters change from hard to critical modes. The softness of the recovery continues to improve with the AC, RQ series.
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SiC symbol
Silicon carbide diodes
650 to 1200 V devices with no limiting recovery losses, low voltage drop, and useful inrush capability. Their heat transfer capability is well above conventional silicon.
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Schottky symbol
Schottky barrier diodes
ST Schottky diodes have low forward voltage drop and negligible recovery, ensuring higher switching speeds and system efficiency from 15 up to 200 V. They implement robust avalanche-capable technologies and are available in both industrial and automotive versions.
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Discover our portfolio:

Different types of diodes and rectifiers:

When selecting a device for a specific application, it is important to consider criteria beyond current and voltage ratings, such as the low voltage drop of power Schottky diodes or the suitability of field effect rectifiers at certain current densities and voltages. Silicon carbide and ultrafast bipolar diodes are ideal for heavy-duty, high-voltage converter applications, with silicon carbide diodes having virtually no recovery losses and ultrafast bipolar diodes offering increasingly softer recovery iterations. Bridge diodes ensure rugged operation, while signal Schottky diodes offer high accuracy in various applications.

Diodes and rectifiers products portfolio

3 advantages with ST diodes

The ST range of Schottky, SiC, and ultrafast diodes ensures three strategic advantages for fast and easy design.

One

Across-the-board efficiency

  • Wide coverage for SMPS and inverter applications through a wide range of voltages: 15-200 V for Si Power Schottky (STPS) with 175°C Tj.
  • Field effect rectifier diodes (FERD) 40-100 V can replace Schottky diodes in some demanding efficiency designs.
  • 650V and 1200V Si Ultrafast Turbo 2 High Temp (STTH) available, as well as new soft subranges.
  • 650 V and 1200 V extremely fast and efficient SiC diodes Power Schottky (STPSC) with 175°C Tj.
  • Current ratings equally cover the field with a common 1-60 A range and up to 240 A for Ultrafast diodes.
  • All devices designed and manufactured by ST.
Two

Performance packages

ST implements optimized processes for attaching high performance and efficiency dice to packages that improve thermal performance. ST offers a very wide range of industry-standard packages, with recent emphasis on power SMD (30A FERD in a DPAK) and high-voltage SMD (STBR3008G2Y bridge rectifier in HV D2PAK). They target demanding applications from fast-charging adaptors to servers SMPS to electric vehicles chargers.

Three

Proven robustness

Our industrial and automotive grade diodes are manufactured to the same quality standards required for automotive-grade (AEC-Q101) qualification. This proven process robustness across the ST diode range ensures high reliability in electronic circuits based on these devices.

Simulation and finder apps to speed up designs

Rectifier diode simulator in eDesignSuite:

Our Schottky & FERD eTool allows designers to evaluate the field-effect rectifier or Schottky diode that best fits their application using the user waveform-driven inputs. It returns I-V curves according to design conditions and evaluation of the available headroom. It includes a powerful search engine to help SMPS designers and component engineers select the best rectifier or diode for their application.


ST Diode Finder:

This online simulator includes a detailed parametric search engine, a fast view of the most important electrical parameters, and more.

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New ultrafast and power Schottky diodes deliver high power in 1.1 mm high, extra-slim package

Housed in an extra-slim PSMC package (TO-277A) able to withstand very high operating junction temperatures, this new ultrafast and Schottky diode series minimizes the PCB footprint while bringing the best of thermal efficiency.
In addition to having a low forward voltage drop and avalanche capability, these ultrafast and Schottky barrier rectifiers, which are rated from 30 to 200 V with a current rating from 5 to 12 A, help ensure greater compactness of equipment, with increased power density and efficiency, in a large range of applications including car modules, industrial equipment, telecom power systems and personal electronics.
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