SD500N/R SERIES
STANDARD RECOVERY DIODES
Stud Version
475A
1
Bulletin I2095 rev. A 08/94
www.irf.com
Features
Wide current range
High voltage ratings up to 4500V
High surge current capabilities
Stud cathode and stud anode version
Standard JEDEC types
Typical Applications
Converters
Power supplies
High power drives
Auxiliary system supplies for traction applications
Major Ratings and Characteristics
I
F(AV)
475
A
@ T
C
55
C
I
F(RMS)
745
A
I
FSM
@
50Hz
7500
A
@ 60Hz
7850
A
I
2
t
@
50Hz
281
KA
2
s
@ 60Hz
257
KA
2
s
V
RRM
range
3000 to 4500
V
T
J
- 40 to 150
C
Parameters
SD500N/R
Units
case style
B-8
SD500N/R Series
2
Bulletin I2095 rev. A 08/94
www.irf.com
Voltage
V
RRM
, maximum repetitive
V
RSM
, maximum non-
I
RRM
max.
Type number
Code
peak reverse voltage
repetitive peak rev. voltage
@ T
J
= T
J
max.
V
V
mA
30
3000
3100
36
3600
3700
40
4000
4100
45
4500
4600
ELECTRICAL SPECIFICATIONS
Voltage Ratings
SD500N/R
50
Forward Conduction
I
F(AV)
Max. average forward current
475
A
180 conduction, half sine wave
@ Case temperature
55
C
I
F(AV)
Max. average forward current
300
A
180 conduction, half sine wave
@ Case temperature
100
C
I
F(RMS)
Max. RMS forward current
745
A
DC @ 40C case temperature
I
FSM
Max. peak, one-cycle forward,
7500
t = 10ms
No voltage
non-repetitive surge current
7850
t = 8.3ms
reapplied
6310
t = 10ms
50% V
RRM
6600
t = 8.3ms
reapplied
Sinusoidal half wave,
I
2
t
Maximum I
2
t for fusing
281
t = 10ms
No voltage
Initial T
J
= T
J
max.
257
t = 8.3ms
reapplied
199
t = 10ms
50% V
RRM
182
t = 8.3ms
reapplied
I
2
t
Maximum I
2
t for fusing
2810
KA
2
s
t = 0.1 to 10ms, no voltage reapplied
V
F(TO)1
Low level value of threshold
voltage
V
F(TO)2
High level value of threshold
voltage
r
f
1
Low level value of forward
slope resistance
r
f
2
High level value of forward
slope resistance
V
FM
Max. forward voltage drop
1.66
V
I
pk
= 1000A, T
J
= T
J
max, t
p
= 10ms sinusoidal wave
Parameter
SD500N/R
Units
Conditions
0.72
(I >
x I
F(AV)
),T
J
= T
J
max.
0.78
(16.7% x
x I
F(AV)
< I <
x I
F(AV)
), T
J
= T
J
max.
m
0.97
(I >
x I
F(AV)
),T
J
= T
J
max.
0.88
(16.7% x
x I
F(AV)
< I <
x I
F(AV)
), T
J
= T
J
max.
V
KA
2
s
A
SD500N/R Series
3
Bulletin I2095 rev. A 08/94
www.irf.com
T
J
Max. junction operating temperature range
-40 to 150
T
stg
Max. storage temperature range
-55 to 200
R
thJC
Max. thermal resistance, junction to case
0.1
DC operation
R
thCS
Max. thermal resistance, case
Mounting surface, smooth, flat and
to heatsink
greased
T
Max. allowed mounting torque 10%
50
Nm
Not lubricated threads
wt
Approximate weight
454
g
Case style
B - 8
See Outline Table
C
0.04
Parameter
SD500N/R
Units
Conditions
K/W
Thermal and Mechanical Specifications
R
thJC
Conduction
(The following table shows the increment of thermal resistence R
thJC
when devices operate at different conduction angles than DC)
180
0.012
0.008
T
J
= T
J
max.
120
0.014
0.014
90
0.017
0.019
60
0.025
0.026
30
0.042
0.042
Conduction angle
Sinusoidal conduction
Rectangular conduction Units
Conditions
K/W
Ordering Information Table
1
2
3
4
5
6
Device Code
SD
50
0
N
45
P
S
C
8
7
1
-
Diode
2
-
Essential part number
3
-
0 = Standard recovery
4
-
N = Stud Normal Polarity (Cathode to Stud)
R = Stud Reverse Polarity (Anode to Stud)
5
-
Voltage code: Code x 100 = V
RRM
(See Voltage Ratings table)
6
-
P = Stud base B-8 3/4" 16UNF-2A
M = Stud base B-8 M24 X 1.5
7
-
S = Isolated lead with silicone sleeve
(Red = Reverse Polarity; Blue = Normal Polarity)
T = Threaded Top Terminal 3/8" 24UNF-2A
None = Non isolated lead
8
-
C = Ceramic Housing
NOTE: Available for rotating applications (Contact factory)
SD500N/R Series
4
Bulletin I2095 rev. A 08/94
www.irf.com
Outlines Table
Case Style B-8
All dimensions in millimeters (inches)
Case Style B-8 with top thread terminal 3/8"
All dimensions in millimeters (inches)
26 (1.023) MAX.
10.5 (0.41) DIA.
12 (0.47) MIN.
47
(
1
.
8
5)
2
7
.
5 (
1
.
0
8)
1
15 (
4
.
5
2)
MI
N
.
38 (1.5)
DIA. MAX.
24
5 (
9
.
6
45
)
25
5 (
1
0
.
04
)
M
AX.
M
AX.
CERAMIC HOUSING
SW 45
* FOR METRIC DEVICE: M24 x 1.5 - LENGHT SCREW 21 (0.83) MAX.
C.S. 70mm
5(0.20) 0.3(0.01)
2
80
(
3
.
15)
M
A
X
.
21
(
0
.
8
3)
M
A
X
.
3/4"-16UNF-2A *
47 (
1
.
8
5)
2
7
.5
(
1
.
0
8
)
7
7
.5
(
3
.
0
5
)
8
0
.5
(
3
.
1
7
)
38 (1.5)
DIA. MAX.
MA
X
.
M
AX.
MA
X
.
CERAMIC HOUSING
SW 45
* FOR METRIC DEVICE: M24 x 1.5 - LENGHT SCREW 21 (0.83) MAX.
21
(
0
.
8
3)
3/4"-16UNF-2A *
25
(
0
.
9
8)
3/8"-24UNF-2A
17 (0.67) DIA.
SD500N/R Series
5
Bulletin I2095 rev. A 08/94
www.irf.com
Fig. 3 - Forward Power Loss Characteristics
25
50
75
100
125
150
Maximum Allowable Ambient Temperature (C)
R
=
0.0
1 K
/W
- D
elt
a R
thS
A
0.2 K
/W
0.1
K/W
0 .0
4 K
/W
0.4 K/W
0.6 K/W
1.8 K/W
0
100
200
300
400
500
600
700
800
900
0
100
200
300
400
500
180
120
90
60
30
Average Forward Current (A)
M
a
x
i
m
u
m
A
v
e
r
ag
e
F
o
r
w
ar
d P
o
we
r
Lo
ss (
W
)
RMS Limit
Conduction Angle
SD500N/R Series
T = 150C
J
25
50
75
100
125
150
Maximum Allowable Ambient Temperature (C)
0.1 K
/W
0 .6 K/W
1.8 K/W
0.4 K/W
0.2 K/W
0.04
K/
W
R
=
0.
01
K/
W
- D
elta
R
th
SA
0
100
200
300
400
500
600
700
800
900
1000
1100
0
100 200 300 400 500 600 700 800
DC
180
120
90
60
30
Average Forward Current (A)
RMS Limit
M
a
x
i
m
u
m
A
v
e
r
ag
e
F
o
r
w
ar
d
P
o
we
r
L
o
ss (
W
)
Conduction Period
SD500N/R Series
T = 150C
J
Fig. 4 - Forward Power Loss Characteristics
Fig. 1 - Current Ratings Characteristics
Fig. 2 - Current Ratings Characteristics
50
60
70
80
90
100
110
120
130
140
150
0
100
200
300
400
500
30
60
90
120
180
Average Forward Current (A)
Conduction Angle
M
a
x
i
m
u
m
A
l
l
o
wabl
e
C
a
s
e
T
e
m
p
e
r
a
t
ur
e
(
C
)
SD500N/R Series
R (DC) = 0.1 K/W
thJ C
30
40
50
60
70
80
90
100
110
120
130
140
150
0
100 200 300 400 500 600 700 800
30
60
90
180
DC
120
Average Forward Current (A)
Conduction Period
SD500N/R Series
R (DC) = 0.1 K/W
thJC
M
a
x
i
m
u
m
A
l
l
o
wabl
e
C
a
s
e
T
e
m
p
e
r
at
ur
e
(
C
)
SD500N/R Series
6
Bulletin I2095 rev. A 08/94
www.irf.com
100
1000
10000
0. 5
1
1.5
2
2. 5
3
3.5
4
T = 25C
J
Instantaneous Forward Voltage (V)
In
s
t
a
n
t
a
n
e
o
u
s
F
o
rw
a
r
d
C
u
rre
n
t
(
A
)
T = 150C
J
SD500N/R Series
0.001
0.01
0.1
1
0.001
0.01
0.1
1
10
Square Wave Pulse Duration (s)
th
J
C
T
r
a
n
s
i
en
t
T
h
er
m
a
l
I
m
p
e
d
a
n
c
e
Z
(
K
/
W
)
SD500N/R Series
Steady State Value:
R = 0.1 K/W
(DC Operation)
thJC
Fig. 8 - Thermal Impedance Z
thJC
Characteristics
Fig. 7 - Forward Voltage Drop Characteristics
2000
3000
4000
5000
6000
7000
8000
1
10
100
Number Of Equal Amplitude Half Cycle Current Pulses (N)
P
e
ak
Hal
f S
i
n
e
W
a
v
e
F
o
r
w
ar
d C
u
r
r
e
nt
(
A
)
Initial T = 150 C
@ 60 Hz 0.0083 s
@ 50 Hz 0.0100 s
J
SD500N/R Series
At Any Rated Load Condition And With
50% Rated V Applied Following Surge
RRM
1000
2000
3000
4000
5000
6000
7000
8000
9000
0.01
0.1
1
Pulse T rain Duration (s)
P
e
ak
Hal
f
S
i
ne
W
a
v
e
F
o
r
w
ar
d
C
u
r
r
e
nt
(
A
)
SD500N/R Series
50% Rated V Reapplied
No Voltage Reapplied
Initial T = 150C
RRM
J
Versus Pulse Train Duration.
Maximum Non Repetitive Surge Current
Fig. 5 - Maximum Non-Repetitive Surge Current
Fig. 6 - Maximum Non-Repetitive Surge Current
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