
www.vishay.com
For technical questions, contact: ind-modules@vishay.com
Document Number: 93176
4
Revision: 08-Apr-08
SD453N/R Series
Vishay High Power Products
Fast Recovery Diodes
(Stud Version), 400/450 A
Fig. 5 - Forward Power Loss Characteristics
Fig. 6 - Forward Power Loss Characteristics
Fig. 7 - Forward Power Loss Characteristics
Fig. 8 - Forward Power Loss Characteristics
Fig. 9 - Maximum Non-Repetitive Surge Current
Fig. 10 - Maximum Non-Repetitive Surge Current
0
100
200
300
400
500
600
700
800
0
50 100 150 200 250 300 350 400 450
180°
120°
90°
60°
30°
Average Forward Current (A)
M
a
x
im
u
m
A
v
e
ra
g
e
F
o
rw
ar
d
P
o
w
e
r
Lo
ss
(
W
)
RMSLimit
Conduction Angle
SD453N/ R..S20 Series
T = 150°C
J
0
100
200
300
400
500
600
700
800
900
1000
0
100
200
300
400
500
600
700
DC
180°
120°
90°
60°
30°
Average Forward Current (A)
RMSLimit
Ma
x
im
u
m
A
v
e
ra
g
e
F
o
rw
a
rd
P
o
w
e
r
Lo
ss
(
W
)
Conduction Period
SD453N/ R..S20 Series
T = 150°C
J
0
100
200
300
400
500
600
700
800
0
100
200
300
400
500
180°
120°
90°
60°
30°
Average Forward Current (A)
M
a
x
im
u
m
A
v
e
rag
e
F
o
rw
ar
d
P
o
w
e
r
Lo
ss
(
W
)
RMSLimit
Conduction Angle
SD453N/ R..S30 Series
T = 150°C
J
0
100
200
300
400
500
600
700
800
900
1000
0
100 200 300 400 500 600 700 800
DC
180°
120°
90°
60°
30°
Average Forward Current (A)
RMSLimit
M
a
x
imu
m
A
v
e
ra
g
e
F
o
rw
a
rd
P
o
w
e
r
Lo
ss
(W
)
Conduction Period
SD453N/ R..S30 Series
T = 150°C
J
2000
3000
4000
5000
6000
7000
8000
9000
110
100
Numb er Of Eq ual Amplitud e Ha lf Cycle Current Pulses (N)
P
e
a
kH
a
lfS
in
e
W
a
v
e
F
o
rw
a
rd
C
u
rr
e
n
t
(A
)
SD453N/ R..S20 Series
Initial T = 150 °C
@60 Hz 0.0083 s
@50 Hz 0.0100 s
J
At Any Rated Load Condition And With
Rated V
Applied Following Surge.
RRM
2000
3000
4000
5000
6000
7000
8000
9000
10000
0.01
0.1
1
Pulse Train Duration (s)
P
e
ak
H
a
lf
S
in
e
W
a
v
e
F
o
rw
ar
d
C
u
rr
e
n
t
(A
)
Maximum Non Repetitive Surge Current
SD453N/ R..S20 Series
Versus Pulse Train Dura tion.
Initial T = 150 °C
No Voltag e Reapplied
Rated V
Reapplied
RRM
J