FDH34N40 Datasheet, PDF (1/6 Pages) Fairchild Semiconductor – 34A, 400V, 0.115 Ohm, N-Channel SMPS Power MOSFET

August 2002
FDH34N40
34A, 400V, 0.115 Ohm, N-Channel SMPS Power MOSFET
Applications
Switch Mode Power Supplies(SMPS), such as
• PFC Boost
• Two-Switch Forward Converter
• Single Switch Forward Converter
• Flyback Converter
• Buck Converter
• High Speed Switching
Features
• Low Gate Charge Q_g results in Simple Drive
Requirement
• Improved Gate, Avalanche and High Reapplied dv/dt
Ruggedness
• Reduced r_DS(ON)
• Reduced Miller Capacitance and Low Input Capacitance
• Improved Switching Speed with Low EMI
• 175°C Rated Junction Temperature
Package
JEDEC TO-247
SOURCE
DRAIN
GATE
Symbol
D
DRAIN
(FLANGE)
G
S
Absolute Maximum Ratings T_C = 25°C unless otherwise noted
Symbol
V_DSS
V_GS
I_D
P_D
Parameter
Drain to Source Voltage
Gate to Source Voltage
Drain Current
Continuous (T_C = 25^oC, V_GS = 10V)
Continuous (T_C = 100^oC, V_GS = 10V)
Pulsed (Note 1)
Power dissipation
Derate above 25^oC
Ratings
400
±30
34
24
136
469
3.1
T_J, T_STG
Operating and Storage Temperature
Soldering Temperature for 10 seconds
Mounting Torque, 8-32 or M3 Screw
-55 to 175
300 (1.6mm from case)
10ibf*in (1.1N*m)
Thermal Characteristics
R_θJC
R_θCS
R_θJA
Thermal Resistance Junction to Case
Thermal Resistance Case to Sink, Flat, Greased Surface
Thermal Resistance Junction to Ambient
0.32
0.24 TYP
40
Units
V
V
A
A
A
W
W/^oC
o_C
o_C
o_C/W
o_C/W
o_C/W
©2002 Fairchild Semiconductor Corporation
FDH34N40 Rev. A,