Fairchild FDH15N50 FDP15N50 FDB15N50 User Manual
Summary
These high-performance N-Channel SMPS Power MOSFETs are engineered for robust and efficient power conversion applications up to 500V. Featuring low gate charge, reduced on-resistance ($R_{DS(ON)}$), and enhanced switching speeds ideal for modern demanding circuits. The detailed manual provides comprehensive specifications, including thermal characteristics, absolute maximum ratings, and dynamic data necessary for designing various Switch Mode Power Supplies (SMPS) like Flyback, Boost, Buck, and Forward Converters. Essential toolkit for power electronics engineers requiring reliable performance at high junction temperatures (up to 175°C).
Page 1 Text Content
August 2003
FDH15N50 / FDP15N50 / FDB15N50 15A, 500V, 0.38 Ohm, N-Channel SMPS Power MOSFET Applications Features
Switch Mode Power Supplies(SMPS), such as Low Gate Charge Qg results in Simple Drive Requirement
PFC Boost
Two-Switch Forward Converter Improved Gate, Avalanche and High Reapplied dv/dt Ruggedness
Single Switch Forward Converter
Reduced r DS(ON)
Flyback Converter
Buck Converter Reduced Miller Capacitance and Low Input Capacitance
High Speed Switching
Improved Switching Speed with Low EMI
175°C Rated Junction Temperature
Package Symbol
DRAIN
SOURCE
(FLANGE)
DRAIN GATE
SOURCE DRAIN (FLANGE)
SOURCE TO-263AB DRAIN GATE
DRAIN FDB SERIES (BOTTOM) TO-247
TO-220AB
FDH SERIES
FDP SERIES
Absolute Maximum Ratings TC = 25o C unless otherwise noted Symbol Parameter Ratings Units
VDSS Drain to Source Voltage
VGS Gate to Source Voltage ±30
Drain Current
AContinuous (TC = 25o C, VGS = 10V)
Continuous (TC = 100o C, VGS = 10V) 11 Pulsed1 Power dissipation
Derate above 25o C W/o C
TJ, TSTG Operating and Storage Temperature -55 to 175
Soldering Temperature for 10 seconds 300 (1.6mm from case)
Thermal Characteristics
RθJC Thermal Resistance Junction to Case 0.50
RθJA Thermal Resistance Junction to Ambient (TO-247)
RθJA Thermal Resistance Junction to Ambient (TO-220, TO-263)
2003 Fairchild Semiconductor Corporation FDH15N50 / FDP15N50 / FDB15N50 Rev D2
Page Summary Contents For Fairchild FDH15N50 FDP15N50 FDB15N50 User Manual
Manual Details
| Brand | Fairchild |
|---|---|
| Pages | 6 |
| File Size | 194.95 KB |
| Published | July 10, 2026 |
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Frequently Asked Questions
What is the optimal operating temperature range for this device?
The specified Operating Temperature range is -55 to 175°C J.
What is the maximum continuous Drain Current Rating at standard temperature?
It can handle 15 A continuously when operated at T = 25°C and V = 10V.
What types of power supplies or converters are recommended for use?
Applications include PFC Boost, Two-Switch Forward Converter, Flyback Converter, and Buck Converter.
Can these MOSFETs be used in life support systems?
No, their use is not authorized as critical components in life support without explicit written approval from Fairchild Semiconductor.