FDH34N40
August 2002
FDH34N40
34A, 400V, 0.115 Ohm, N-Channel SMPS Power MOSFET
Applications
Switch Mode Power Supplies(SMPS), such as
鈥?PFC Boost
鈥?Two-Switch Forward Converter
鈥?Single Switch Forward Converter
鈥?Flyback Converter
鈥?Buck Converter
鈥?High Speed Switching
Features
鈥?Low Gate Charge
Requirement
Q
g
results
in
Simple
Drive
鈥?Improved Gate, Avalanche and High Reapplied dv/dt
Ruggedness
鈥?Reduced r
DS(ON)
鈥?Reduced Miller Capacitance and Low Input Capacitance
鈥?Improved Switching Speed with Low EMI
鈥?175擄C Rated Junction Temperature
Package
JEDEC TO-247
SOURCE
DRAIN
GATE
G
Symbol
D
DRAIN
(FLANGE)
S
Absolute Maximum Ratings
T
C
= 25擄C unless otherwise noted
Symbol
V
DSS
V
GS
Parameter
Drain to Source Voltage
Gate to Source Voltage
Drain Current
I
D
Continuous (T
C
= 25
o
C, V
GS
= 10V)
Continuous (T
C
= 100
o
C, V
GS
= 10V)
Pulsed (Note 1)
P
D
T
J
, T
STG
Power dissipation
Derate above 25
o
C
Operating and Storage Temperature
Soldering Temperature for 10 seconds
Mounting Torque, 8-32 or M3 Screw
34
24
136
469
3.1
-55 to 175
300 (1.6mm from case)
10ibf*in (1.1N*m)
A
A
A
W
W/
o
C
o
o
Ratings
400
鹵30
Units
V
V
C
C
Thermal Characteristics
R
胃JC
R
胃CS
R
胃JA
Thermal Resistance Junction to Case
Thermal Resistance Case to Sink, Flat, Greased Surface
Thermal Resistance Junction to Ambient
0.32
0.24 TYP
40
o
C/W
C/W
o
C/W
o
漏2002 Fairchild Semiconductor Corporation
FDH34N40 Rev. A,