
20FQ... Series
PD-2.033 rev. E
12/97
2
www.irf.com
V
FM
Max. Forward Voltage Drop (1)
* See Fig. 1
0.53
0.65
V
V
@ 30A
@ 60A
0.47
0.61
V
V
@ 30A
@ 60A
I
RM
Max. Reverse Leakage Current (1)
* See Fig. 2
4
mA
mA
T
J
= 25 °C
T
J
= 125 °C
V
R
= 5V
DC
, (test signal range 100Khz to 1Mhz) 25 °C
Measured from top of terminal to mounting plane
150
C
T
L
S
dv/dt Max. Voltage Rate of Change
(Rated V
R
)
(1) Pulse Width < 300μs, Duty Cycle < 2%
Thermal-Mechanical Specifications
Max. Junction Capacitance
Typical Series Inductance
1850
6.5
pF
nH
10,000
V/ μs
T
J
= 25 °C
T
J
= 125 °C
V
R
= rated V
R
Electrical Specifications
Parameters
20FQ
Units
Conditions
T
J
T
stg
R
thJC
Max. Thermal Resistance Junction
to Case
R
thCS
Typical Thermal Resistance, Case o
Heatsink
Max. Junction Temperature Range
-65 o 150
°C
Max. Storage Temperature Range
-65 o 150
1.25
°C
°C/W
DC operation * See Fig. 4
0.50
°C/W
Mounting surface smooth and greased
wt
T
Approximate Weight
Mounting Torque
5.8 (0.2)
14 (12)
g (oz.)
Min.
Non-lubricated hreads
Max.
23 (20)
DO-203AA(DO-4)
Case Style
JEDEC
Kg-cm
(Ibf-in)
Parameters
20FQ
Units
Conditions
I
F(AV)
Max. Average Forward Current
* See Fig. 5
30
A
50% duty cycle @ T
C
= 111 °C, rectangular wave form
I
FSM
Max. Peak One Cycle Non-Repetitive
Surge Current * See Fig. 7
7800
800
5μs Sine or 3μs Rect. pulse
10ms Sine or 6ms Rect. pulse
E
AS
I
AR
Non-Repetitive Avalanche Energy
Repetitive Avalanche Current
40
6
mJ
A
T
J
= 25 °C, I
AS
= 6 Amps, L = 2.2 mH
Current decaying inearly o zero n 1 μsec
Frequency limited by T
J
max. V
A
= 1.5 x V
R
typical
Parameters
20FQ Units
Conditions
A
Absolute Maximum Ratings
Following any rated
load condition and
with rated V
RRM
applied
Part number
Max.
DC Reverse Voltage (V)
20FQ035
20FQ040
20FQ045
V
R
V
RWM
Max.
Working Peak Reverse Voltage (V)
35
40
45
Voltage Ratings