Q2-Class Series - 500V - 1000V N-Channel Power MOSFETs with Fast Intrinsic Diodes (HiPerFETs)

Littelfuse Discrete MOSFETs Q2-Class Image
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Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless otherwise agreed by Littelfuse. "Littelfuse" includes Littelfuse, Inc., and all of its affiliate entities.

Q2 Class HiPerFET™ MOSFETs feature switching efficiencies that enable high frequency operation and small power supplies. These devices combine the advantages of a low gate charge with a double-metal construction, resulting in a line of MOSFETs with an intrinsic gate resistance that is much lower than seen in conventional MOSFETs.


  • International standard packages
  • Double metal process for low gate resistance
  • Avalanche energy and current rated
  • Fast intrinsic rectifier
  • Low package inductance


  • DC-DC converters
  • Battery chargers
  • Switched-mode and resonant-mode power supplies
  • Pulse generation
  • Laser drivers


  • Easy to mount
  • High power density
  • Space savings

Access specifications, certifications, check availability and order parts below

Catalog #VDSS (V)RDS(ON),max @ 25 ℃ (Ohm)ID, cont @ 25 ℃ (A)Gate Charge (nC)RthJC (K/W)ConfigurationPackage TypeCISS (pF)PD (W)trr,max (ns)Replaced By PartCheck StockPart DatasheetSPICE ModelStockSamplesCompare
IXFB38N100Q210000.25382500.14SingleTO-264 PLUS13500890300YesPartSPICECheck
IXFB50N80Q28000.16502600.11SingleTO-264 PLUS72001135300PartSPICE
IXFB70N60Q26000.088702650.14SingleTO-264 PLUS12000890250PartSPICE
Replaced By: IXFB100N50Q3
5000.06802500.13SingleTO-264 PLUS15000960250IXFB100N50Q3YesPartSPICECheckOrder
IXFK66N50Q25000.08662000.17SingleTO-2649125735250YesPart Check
IXFL38N100Q210000.28292500.33SingleTO-264 PLUS13500380300Part 
IXFL80N50Q25000.066552500.33SingleTO-264 PLUS12800380250Part 
IXFX30N100Q210000.4301860.17SingleTO-247 PLUS9400735300YesPart Check
IXFX38N80Q28000.22381900.17SingleTO-247 PLUS9500735250YesPartSPICECheck
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