50V RF DMOS

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Based on an optimized process layout resulting in improved RF performance over the HF and VHF frequency bands, ST’s 50 V RF DMOS transistors are ideal for ISM, HF transceivers and FM broadcast applications. They exhibit outstanding RF gain (>20 dB) and power saturation (up to 450 W) combined with high breakdown voltage (up to more than 200 V) and improved ruggedness.

Key features

  • Output power: up to 350 W
  • High breakdown voltage BVDSS: up to more than 200 V
  • Extremely high ruggedness: infinite:1 VSWR all phases
  • Best in-class reliability: 1 million power cycles
  • Low thermal resistance
  • ST air cavity (STAC®) package option for improved junction-to-case thermal resistance (-25%) and improved RF performance compared to ceramic packages
Part NumberGeneral DescriptionPackageMarketing StatusAutomotive GradeFrequency nom (MHz)Output Power(Pout) nom (W)Power Gain(PG) nom (dB)Transistor Supply Voltage(Vdd or Vcc) nom (V)Efficiency nom (%)R_th(J-C)(R_th(J-C)) max ()
SD291830W - 50V HF/VHF DMOS TRANSISTORM113Active_30301850501
SD2931-10150W - 50V HF/VHF DMOS TRANSISTORM174Active_1751501450550.45
SD2931-12MR150W - 50V Moisture Resistant HF/VHF DMOS TRANSISTORM174MRActive_1751501450550.45
SD2932300W - 50V HF/VHF DMOS PUSH-PULL TRANSISTORM244Active_1753001550500.35
SD2933300W - 50V HF/VHF DMOS TRANSISTORM177Active_303002050500.27
SD2941-10175W - 50V HF/VHF DMOS TRANSISTORM174Active_1751751550650.45
SD2942350W - 50V HF/VHF DMOS PUSH-PULL TRANSISTORM244Active_17535015-550.35
SD2943350W - 50V HF/VHF DMOS TRANSISTORM177Active_303502250600.27
SD2951-10250W 50V HF/VHF DMOS TRANSISTORM174Active_175250145065-
SD4931150W - 50V High Ruggedness HF/VHF DMOS TRANSISTORM174Active_17515014.850560.45
SD4933300W - 50V High Ruggedness HF/VHF DMOS TRANSISTORM177Active_303002450650.27
SD4933MR50 V moisture resistant DMOS transistor for ISM applicationsM177MRActive_303002450650.27
STAC2932B300W - 50V HF/VHF DMOS in STAC244 Boltdown packageSTAC244BActive_1753002050680.28
STAC2932F300W - 50V HF/VHF DMOS in STAC244 Flangeless packageSTAC244FActive_1753002050680.28
STAC2933300W - 50V HF/VHF DMOS in STAC177 packageSTAC177BActive_303002050500.22
STAC2942B350W - 50V HF/VHF DMOS in STAC244 Boltdown packageSTAC244BActive_1753502150750.28
STAC2942F350W - 50V HF/VHF DMOS in STAC244 Flangeless packageSTAC244FActive_1753502150750.28
STAC2943350W - 50V HF/VHF DMOS in STAC177 packageSTAC177BActive_303502250600.22
STAC4933300W - 50V High Ruggedness HF/VHF DMOS in STAC177 packageSTAC177BActive_3003002450650.22