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150W - 50V Moisture Resistant HF/VHF DMOS TRANSISTOR
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The SD2931-12MR is a gold metallized N-channel MOS field-effect RF power transistor. Electrically identical to the standard SD2931 MOSFET, it is intended for use in 50 V DC large signal applications up to 230 MHz.

The SD2931-12MR is mechanically compatible with the SD2931 but offers better thermal capability (25% lower thermal resistance), representing the best-in-class in transistors for ISM applications, where reliability and ruggedness are critical factors.

The SD2931-12MR benefits from the latest generation of environmentally designed packaging, ruggedized against cyclic high moisture operation and severe storage conditions.

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Errata Sheet
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Key Features

  • Gold metallization
  • Excellent thermal stability
  • Common source, push-pull configuration
  • POUT = 150 W min. with 14 dB gain @ 175 MHz
  • Thermally enhanced packaging for lower junction temperatures
  • GFS and VGS sort marked on unit
  • Moisture resistant package specifically designed to operate in extreme environments

Design Resources


Technical Documentation

Product Specifications

Description Version Size
DS9247: 150 W – 50 V moisture resistant HF/VHF DMOS transistor
2.0 641 KB

HW Model & CAD Libraries

HW Model & CAD Libraries

Description Version Size
SD2931-12MR ADS model
277 KB

Related Tools and Software

Related Tools and Software

Part Number Description
STSW-RFMOS002 Large signal load stability for RF transistors based on Agilnet ADS
STSW-RFMOS001 Mismatch analysis for RF transistor circuits based on Agilent ADS

Sample & Buy

Part Number Marketing StatusPackagePacking TypeAutomotive GradeOrder From STUnit Price (US$)*
@ 1000
Distributor AvailabilityRoHS Compliance GradeDownload
Material Declaration**
SD2931-12MRActiveM174MRLoose Piece_-53Distributor reported inventory date: 2016-02-28
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.