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600 V Tandem extra fast diode
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This device is part of ST's second generation of 600 V tandem diodes. It has ultralow switching-losses with a minimized QRR that makes it perfect for use in circuits working in hard-switching mode. In particular the VF / QRR trade-off positions this device between standard ultrafast diodes and silicon-carbide Schottky rectifiers in terms of price/performance ratio.

The device offers a new positioning giving more flexibility to power-circuit designers looking for good performance while still respecting cost constraints.

Featuring ST's Turbo 2 600 V technology, the device is particularly suited as a boost diode in continuous conduction mode power factor correction circuits.

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Errata Sheet
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Key Features

  • High voltage rectifier
  • Tandem diodes in series
  • Very low switching losses
  • Insulated device with internal ceramic
  • Equal thermal conditions for both 300 V diodes
  • Static and dynamic equilibrium of internal diodes are warranted by design
  • Insulated package:
  • Insulated voltage: 2500 VRMS sine

Design Resources


Technical Documentation

Product Specifications

Description Version Size
DS9442: 600 V tandem extra fast diode
2.0 288 KB

Technical Notes & Articles

Description Version Size
TN1173: Packing information for IPAD™, protection, rectifiers, thyristors and AC Switches
3.1 333 KB

HW Model & CAD Libraries

HW Model & CAD Libraries

Description Version Size
600 V ultrafast diode PSpice models (.lib & .olb)
1.0 133 KB

Publications and Collaterals


Description Version Size
New W series of ultrafast rectifiers for welding applications
1,468 KB

Selection Guides

Description Version Size
Diodes and rectifiers selection guide
1.0 1,272 KB


Description Version Size
Products and solutions for solar energy
1.0 1,318 KB

Sample & Buy

Part Number Marketing StatusPackagePacking TypeJunction Temperature (max) Automotive GradeOrder From STUnit Price (US$)*
@ 100
Distributor AvailabilityRoHS Compliance GradeDownload
Material Declaration**
STTH8ST06DIActiveTO-220AC InsTube175_-.638Distributor reported inventory date: 2016-02-13
Distributor NameRegionStockMin. order

(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors
(**) The Material Declaration forms available on 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.
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