IRF7946

A 40V Single N-Channel HEXFET Power MOSFET in a DirectFET MX package rated at 198 amperes optimized with low on resistance.

ParametricIRF7946
PackageDirectFET MX
VDS  max40.0V
RDS (on)  max1.4mΩ
RDS (on) (@10V)  max1.4mΩ
PolarityN
ID (@ TC=100°C)  max125.0A
ID  max125.0A
ID (@ TC=25°C)  max198.0A
Ptot  max96.0W
QG141.0nC
MountingSMD
RthJC  max1.3K/W
Tj  max150.0°C
VGS  max20.0V
Moisture Sensitivity Level1
Qgd44.0nC
Sales Product NameIRF7946
OPNIRF7946TRPBF
Product Statusactive and preferred
Package NameDIRECTFET
Completely lead freeyes
Halogen freeyes
RoHS compliantyes
Packing Size4800
Packing TypeTAPE & REEL
Moisture Level1
Benefits:
  • Improved Gate, Avalanche and Dynamic dV/dt Ruggedness
  • Fully Characterized Capacitance and Avalanche SOA
  • Enhanced body diode dV/dt and dI/dt Capability
  • RoHS Compliant Containing no Lead, no Bromide and no Halogen
  • StrongIRFET™
Target Applications:
  • AC-DC
  • Battery Operated Drive
  • Isolated Primary Side MOSFETs
  • Isolated Secondary Side SyncRec MOSFETs
  • Load Switch High Side
Data Sheet
TitleSizeDateVersion
Data Sheet - IRF7946,EN290 KB23 Apr 2012
Product Selection Guide
TitleSizeDateVersion
NEW! Power Management Selection Guide 2016EN4.7 MB22 Feb 201600_00
Simulation Models
TitleSizeDateVersion
Spice Model - IRF7946PBFEN2 KB23 Apr 2012
Saber Model - IRF7946PBFEN2 KB23 Apr 2012
EN IRF7946
EN IDV20E65D1
EN IRF7946
EN IRF7946