PD-2.033 rev. E 12/97
20FQ... SERIES
SCHOTTKY RECTIFIER
30 Amp
Major Ratings and Characteristics
Characteristics
I
F(AV)
Rectangular
waveform
V
RRM
range
I
FSM
@ tp = 5 µs sine
V
F
T
J
@ 30 Apk, T
J
= 125°C
range
35 to 45
7800
0.47
- 65 to 150
V
Description/Features
Units
A
The 20FQ Schottky rectifier series has been optimized for
very low forward voltage drop, with moderate leakage. The
proprietary barrier technology allows for reliable operation up
to 150° C junction temperature. Typical applications are in
switching power supplies, converters, free-wheeling diodes,
and reverse battery protection.
150° C T
J
operation
A
V
°C
Very low forward voltage drop
High frequency operation
Guard ring for enhanced ruggedness and long term
reliability
Hermetic packaging
20FQ...
30
CASE STYLE AND DIMENSIONS
Conforms to JEDEC Outline DO-203AA (DO-4)
Dimensions in millimeters and inches
www.irf.com
1
20FQ... Series
PD-2.033 rev. E
12/97
Voltage Ratings
Part number
V
R
Max. DC Reverse Voltage (V)
35
40
45
V
RWM
Max. Working Peak Reverse Voltage (V)
20FQ035
20FQ040
20FQ045
Absolute Maximum Ratings
Parameters
I
F(AV)
Max. Average Forward Current
* See Fig. 5
I
FSM
E
AS
I
AR
Max. Peak One Cycle Non-Repetitive
Surge Current * See Fig. 7
Non-Repetitive Avalanche Energy
Repetitive Avalanche Current
20FQ
30
7800
800
40
6
Units
A
Conditions
50% duty cycle @ T
C
= 111 °C, rectangular wave form
5µs Sine or 3µs Rect. pulse
Following any rated
load condition and
with rated V
RRM
applied
A
mJ
A
10ms Sine or 6ms Rect. pulse
T
J
= 25 °C, I
AS
= 6 Amps, L = 2.2 mH
Current decaying linearly to zero in 1 µsec
Frequency limited by T
J
max. V
A
= 1.5 x V
R
typical
Electrical Specifications
Parameters
V
FM
Max. Forward Voltage Drop
* See Fig. 1
(1)
20FQ
0.53
0.65
0.47
0.61
Units
V
V
V
V
mA
mA
pF
nH
V/ µs
@ 30A
@ 60A
@ 30A
@ 60A
T
J
= 25 °C
T
J
= 125 °C
Conditions
T
J
= 25 °C
T
J
= 125 °C
V
R
= rated V
R
I
RM
C
T
L
S
Max. Reverse Leakage Current (1)
* See Fig. 2
Max. Junction Capacitance
Typical Series Inductance
4
150
1850
6.5
10,000
V
R
= 5V
DC
, (test signal range 100Khz to 1Mhz) 25 °C
Measured from top of terminal to mounting plane
dv/dt Max. Voltage Rate of Change
(Rated V
R
)
(1) Pulse Width < 300µs, Duty Cycle < 2%
Thermal-Mechanical Specifications
Parameters
T
J
T
stg
Max. Junction Temperature Range
Max. Storage Temperature Range
20FQ
-65 to 150
-65 to 150
1.25
0.50
5.8 (0.2)
Min.
Max.
14 (12)
23 (20)
Units
°C
°C
°C/W
DCoperation
Conditions
R
thJC
Max. Thermal Resistance Junction
to Case
R
thCS
Typical Thermal Resistance, Case to
Heatsink
wt
T
Approximate Weight
Mounting Torque
Case Style
* See Fig. 4
°C/W Mounting surface , smooth and greased
g (oz.)
Kg-cm
Non-lubricated threads
(Ibf-in)
JEDEC
DO-203AA(DO-4)
2
www.irf.com
20FQ... Series
PD-2.033 rev. E
12/97
10
00
10
00
T =1 0 C
J 5°
R v r eC rr n - I ( A
e es u e t
m)
R
10
0
1
0
1
.
1
2°
5C
.0
1
.0 1
0
0
1 5C
2°
1 0C
0°
7°
5C
5°
0C
10
0
In ta ta e u F r adC r e t -I (A
s n n o s ow r ur n
)
F
5
1 1 2 2 3 3 4 4
0 5 0 5 0 5 0 5
R v r eV lta e- V (V
e es o g
R )
1
0
Fig. 2 - Typical Values of Reverse Current
Vs. Reverse Voltage
T =1 0 C
5°
J
J n tio C p c n e- C ( F
u c n a a ita c
p)
T
100
00
T =1 5 C
2°
J
T= 2°
5C
J
1
T =2 °
5C
J
10
00
.
1
0
.1 .2 .
3 .4 .5 .6 .
7 .
8 .
9
F r a V lta eDo - V M )
o w rd o g r p F (V
1 1 1
.1 .2
10
0
0
1
0
2
0
3
0
4
0
0
5
R v r e V lta e- V ( )
e es o g
RV
Fig. 1 - Maximum Forward Voltage Drop Characteristics
1
0
T e m l Im e a c - Z
h r a p d ne
(° / )
CW
th C
J
Fig. 3 - Typical Junction Capacitance
Vs. Reverse Voltage
1
.1
D=0 0
.5
D=0 3
.3
D=0 5
.2
D=0 7
.1
D=0 8
.0
P
M
D
t
1
t2
N te :
o s
1 D tyfa to D= t1/ t2
. u
c r
.0
1
S g P ls
in le u e
(T e m l R s ta c )
h r a e is n e
. 0
01
.0 0 1
00
.0 0
01
.0 1
0
.0
1
.
1
2 P a T =P x Z
. ek
+T
J D
M t J
hC C
1
1
0
10
0
t1, R c n u rP ls D ra n( e o d )
e ta g la u e u tio S c n s
Fig. 4 - Maximum Thermal Impedance Z
thJC
Characteristics
www.irf.com
3
20FQ... Series
PD-2.033 rev. E
12/97
10
6
A w b C s T m ea r - (C
llo a le a e e p r tu e ° )
2F
0Q
R J (D ) =12 ° /W
. 5C
th C C
2
5
D=00
.8
D=01
.7
.5
2 D=02
0
D=03
.3
D=05
.0
1
5
R SL it
M im
10
5
10
4
10
3
A e a eP w r L s -(W tt )
v r g o e os
as
D
C
1
0
D
C
10
2
5
10
1
0
1
0
2
0
3
0
4
0
5
0
0
0
5
1 1 2 2 3 3 4 4
0 5 0 5 0 5 0 5
A e g F r a dC rr n - IFA ) ( )
v ra e o w r u e t
( V A
A e a eF rw r C r e t - I
v r g o ad ur n
( )
A
FA )
( V
Fig. 5 - Maximum Allowable Case Temperature
Vs. Average Forward Current
10000
FSM
Fig. 6 - Forward Power Loss Characteristics
Non-Repetitive Surge Current - I
(A)
1000
At Any Rated Load Condition
And With Rated V
RRM
Applied
Following Surge
100
10
100
1000
10000
Square Wave Pulse Duration - t
p
(microsec)
Fig. 7 - Maximum Non-Repetitive Surge Current
L
HIGH-SPEED
SWITCH
FREE-WHEEL
DIODE
40HFL40S02
Vd = 25 Volt
DUT
IRFP460
Rg = 25 ohm
+
CURRENT
MONITOR
Fig. 8 - Unclamped Inductive Test Circuit
4
www.irf.com
无线连接
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
