FDPF5N50UT − N-Channel UniFETTM Ultra FRFETTM MOSFET 500V, 4A, 2Ω


UniFETTM MOSFET is Fairchild Semiconductor’s high voltage MOSFET family based on planar stripe and DMOS technology. This MOSFET is tailored to reduce on-state resistance, and to provide better switching performance and higher avalanche energy strength. UniFET Ultra FRFETTM MOSFET has much superior body diode reverse recovery performance. Its trr is less than 50nsec and the reverse dv/dt immunity is 20V/nsec while normal planar MOSFETs have over 200nsec and 4.5V/nsec respectively. Therefore UniFET Ultra FRFET MOSFET can remove additional component and improve system reliability in certain applications that require performance improvement of the MOSFET’s body diode. This device family is suitable for switching power converter applications such as power factor correction (PFC), flat panel display (FPD) TV power, ATX and electronic lamp ballasts.

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Product Status/Pricing/Packaging

Product Product & Eco Status *Pricing Packaging & Packing Info **Package Marking Convention Qualification Support Compliance Certificates
0 FDPF5N50UT Full Production
ROHS Compliant
$0.92  Details
4.7 x 10.06 x 15.87mm

Line 1:$Y (Fairchild logo)
&Z (Plant Code)
&3 (3-Digit Date Code)
Line 2:FDPF
Line 3:5N50UT
RƟJA :  62.5  °C/W
RƟJC :  4.5  °C/W


  • RDS(on) = 1.65Ω ( Typ.)@ VGS = 10V, ID = 2A
  • Low gate charge ( Typ. 11nC)
  • Low Crss ( Typ. 5pF)
  • 100% avalanche tested
  • Improved dv/dt capability
  • RoHS compliant


  • AC-DC Merchant Power Supply
  • Consumer Appliances
  • DC-DC Merchant Power Supply
  • Desktop PC
  • DVD/Set Top Boxes
  • EMS
  • LCD Monitor
  • LED TV
  • Lighting
  • LCD TV
  • Notebook PC
  • PC Server
  • PDP TV
  • Uninterruptible Power Supply

Application Notes

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