Features
Wide current range
High voltage ratings up to 2400V
High surge current capabilities
Stud cathode and stud anode version
Standard JEDEC types
Typical Applications
Converters
Power supplies
Machine tool controls
High power drives
Medium traction applications
Major Ratings and Characteristics
I
F(AV)
400
A
@ T
C
120
C
I
F(RMS)
630
A
I
FSM
@
50Hz
8250
A
@ 60Hz
8640
A
I
2
t
@
50Hz
340
KA
2
s
@ 60Hz
311
KA
2
s
V
RRM
range
400 to 2400
V
T
J
- 40 to 190
C
Parameters
SD400N/R
Units
case style
DO-205AB (DO-9)
SD400N/R SERIES
STANDARD RECOVERY DIODES
Stud Version
400A
Bulletin I2082/A
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SD400N/R Series
ELECTRICAL SPECIFICATIONS
Voltage Ratings
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
04
400
500
08
800
900
12
1200
1300
16
1600
1700
20
2000
2100
24
2400
2500
SD400N/R
15
I
F(AV)
Max. average forward current
400
A
180 conduction, half sine wave
@ Case temperature
120
C
I
F(AV)
Max. average forward current
480
A
180 conduction, half sine wave
@ Case temperature
100
C
I
F(RMS)
Max. RMS forward current
630
A
DC @ 110C case temperature
I
FSM
Max. peak, one-cycle forward,
8250
t = 10ms
No voltage
non-repetitive surge current
8640
t = 8.3ms
reapplied
6940
t = 10ms
100% V
RRM
7270
t = 8.3ms
reapplied
Sinusoidal half wave,
I
2
t
Maximum I
2
t for fusing
340
t = 10ms
No voltage
Initial T
J
= T
J
max.
311
t = 8.3ms
reapplied
241
t = 10ms
100% V
RRM
220
t = 8.3ms
reapplied
I
2
t
Maximum I
2
t for fusing
3400
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
1.62
V
I
pk
= 1500A, T
J
= T
J
max, t
p
= 10ms sinusoidal wave
Parameter
SD400N/R
Units
Conditions
Forward Conduction
KA
2
s
A
V
m
0.51
(I >
x I
F(AV)
),T
J
= T
J
max.
0.55
(16.7% x
x I
F(AV)
< I <
x I
F(AV)
), T
J
= T
J
max.
0.85
(I >
x I
F(AV)
),T
J
= T
J
max.
0.80
(16.7% x
x I
F(AV)
< I <
x I
F(AV)
), T
J
= T
J
max.
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SD400N/R Series
T
J
Max. junction operating temperature range
-40 to 190
T
stg
Max. storage temperature range
-55 to 200
R
thJC
Max. thermal resistance, junction to case
0.11
DC operation
R
thCS
Max. thermal resistance, case to heatsink
0.04
Mounting surface, smooth, flat and greased
T
Max. allowed mounting torque 10%
27
Nm
Not lubricated threads
wt
Approximate weight
250
g
Case style
DO-205AB (DO-9)
See Outline Table
Parameter
SD400N/R
Units
Conditions
Thermal and Mechanical Specifications
C
R
thJC
Conduction
(The following table shows the increment of thermal resistence R
thJC
when devices operate at different conduction angles than DC)
K/W
180
0.020
0.013
T
J
= T
J
max.
120
0.023
0.023
90
0.029
0.031
60
0.042
0.044
30
0.073
0.074
Conduction angle
Sinusoidal conduction
Rectangular conduction Units
Conditions
K/W
Ordering Information Table
SD
40
0
N
24
P
B
C
1
2
3
4
5
6
7
Device Code
8
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 DO-205AB (DO-9) 3/4" 16UNF-2A
M = Stud base DO-205AB (DO-9) M16 X 1.5
7
-
B = Flag top terminal (for Cathode/ Anode Leads)
S = Isolated lead with silicone sleeve
(Red = Reverse Polarity; Blue = Normal Polarity)
None = Non isolated lead
8
-
C = Ceramic Housing (over 1600V)
V = Glass-metal seal (only up to 1600V)
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SD400N/R Series
Outline Table
Conform to JEDEC DO-205AB (DO-9)
All dimensions in millimeters (inches)
M
AX.
CERAMIC HOUSING
MAX.
M
AX.
21
(
0
.
8
2
)
MA
X
.
19 (0.75)
9.
5
(
0
.
3
7)
M
I
N
.
DIA. 8.5 (0.33) NOM.
82
(
3
.
2
3)
M
I
N
.
DIA. 27.5 (1.08) MAX.
3
8
(
1
.
50)
1
6
(
0
.
63)
SW 32
* FOR METRIC DEVICE: M16 X 1.5
21
0
(
8
.
2
7
)
10
(
0
.
39)
3/4"-16UNF-2A*
C.S. 35mm
4 (0.16) MAX.
3
9
(
1
.5
3
)
M
AX.
2
(0.054 s.i.)
M
AX.
GLASS-METAL SEAL
MAX.
MA
X
.
2
1
(
0
.
82)
MA
X
.
19 (0.75)
9.
5 (
0
.
37)
M
I
N
.
DIA. 8.5 (0.33) NOM.
75
(
2
.
9
5
)
M
I
N
.
DIA. 28.5 (1.08) MAX.
28.
5
(
1
.
1
2)
1
6
(
0
.6
3
)
SW 32
* FOR METRIC DEVICE: M16 X 1.5
200 (
7
.
8
7)
10 (
0
.
39)
3/4-16UNF-2A*
C.S. 35mm
4 (0.16) MAX.
3
9
(
1
.5
3
)
MA
X
.
2
(0.054 s.i.)
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SD400N/R Series
Outline Table
DO-205AB (DO-9) Flag
All dimensions in millimeters (inches)
MA
X
.
CERAMIC HOUSING
21 (
0
.
8
2
)
MA
X
.
38 (
1
.
5
0
)
3 (
0
.
1
2
)
32
(
1
.
2
6)
7
9
(3
.
1
1
)
MA
X
.
21 (0.83)
DIA. 6.5 (0.25)
13 (
0
.
51)
DIA. 27.5 (1.08) MAX.
72
(
2
.
8
3)
3/4"-16UNF-2A*
*FOR METRIC DEVICE. M16 X 1.5
14 (0.55)
16 (
0
.
63)
MA
X
.
MA
X
.
GLASS-METAL SEAL
M
AX.
21 (
0
.
83)
MA
X
.
DIA. 28.5 (1.12) MAX.
2
8
.5
(
1
.1
2
)
16 (
0
.
63)
21 (0.83)
14 (0.55)
DIA. 6.5 (0.26)
3 (
0
.
1
2
)
32
(
1
.
2
6)
3/4"-16UNF-2A*
*FOR METRIC DEVICE: M16 X 1.5
7
0
(2
.
7
5
)
MA
X
.
13 (
0
.
5
1
)
62 (
2
.
44)
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SD400N/R Series
Fig. 1 - Current Ratings Characteristics
Fig. 2 - Current Ratings Characteristics
Fig. 3 - Forward Power Loss Characteristics
Fig. 4 - Forward Power Loss Characteristics
110
120
130
140
150
160
170
180
190
0
50 100 150 200 250 300 350 400 450
30
60
90
120
180
Average Forward Current (A)
Conduction Angle
M
a
x
i
m
u
m
A
l
l
o
w
abl
e C
a
s
e
T
e
m
p
e
r
at
u
r
e (
C
)
SD400N/ R Series
R (DC) = 0.11 K/ W
thJC
100
110
120
130
140
150
160
170
180
190
0
100
200
300
400
500
600
700
DC
30
60
90
120
180
Conduction Period
M
a
x
i
m
u
m
A
l
l
o
w
abl
e
C
a
s
e
T
em
p
e
r
at
u
r
e (
C
)
Average Forward Current (A)
SD400N/ R Series
R (DC) = 0.11 K/W
thJC
10
30
50
70
90 110 130 150 170 190
Maximum Allowable Ambient Temperature (C)
0.2
K
/W
0.3
K/
W
0.4
K/
W
0.6 K
/ W
1 K/ W
R
=
0
.0
4
K
/W
-
D
e
lta
R
th
S
A
0.1
K
/ W
1.8 K/W
0
50
100
150
200
250
300
350
400
450
500
550
0
50
100 150 200 250 300 350 400
180
120
90
60
30
RMS Limit
Conduction Angle
M
a
x
i
m
u
m
A
v
er
age F
o
r
w
ar
d P
o
w
e
r
L
o
s
s
(
W
)
Average Forward Current (A)
SD400N/ R Series
T = 190C
J
10
30
50
70
90 110 130 150 170 190
Maximum Allowable Ambient Temperature (C)
0.2
K/
W
0.3
K/ W
0.4
K/W
0.6 K/
W
1 K/W
R
=
0
.0
4 K
/W
- D
elt
a
R
th
SA
0.1
K
/W
1.8 K/W
0
100
200
300
400
500
600
700
800
0
100
200
300
400
500
600
700
DC
180
120
90
60
30
RMS Limit
Conduction Period
Ma
x
i
m
u
m A
v
e
r
a
g
e
F
o
rw
a
r
d
P
o
w
e
r
L
o
s
s
(
W
)
Average Forward Current (A)
SD400N/ R Series
T = 190C
J
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SD400N/R Series
Fig. 5 - Maximum Non-Repetitive Surge Current
Fig. 6 - Maximum Non-Repetitive Surge Current
Fig. 7 - Forward Voltage Drop Characteristics
Fig. 8 - Thermal Impedance Z
thJC
Characteristic
2000
3000
4000
5000
6000
7000
8000
1
10
100
Number Of Equal Amp litude Half Cycle Current Pulses (N)
Pe
a
k
Ha
l
f
S
i
ne W
a
v
e
F
o
r
w
a
r
d
C
u
r
r
ent
(
A
)
SD400N/ R Series
Initial T = 190C
@ 60 Hz 0.0083 s
@ 50 Hz 0.0100 s
J
At Any Rated Load Condition And With
Rated V Applied Following Surge.
RRM
1000
2000
3000
4000
5000
6000
7000
8000
9000
0.01
0.1
1
Pulse Train Duration (s)
P
e
ak
H
a
l
f
S
i
n
e
W
a
v
e
F
o
r
w
ar
d C
u
r
r
e
n
t
(
A
)
Versus Pulse Train Dura tion.
Maximum Non Repetitive Surge Current
Initial T = 190C
No Voltage Reapplied
Ra ted V Reapplied
RRM
J
SD400N/ R Series
100
1000
10000
0.5
1
1.5
2
2.5
T = 25C
J
Instantaneous Forward Voltage (V)
I
n
s
t
a
n
t
aneo
u
s
F
o
r
w
a
r
d
C
u
r
r
e
n
t
(
A
)
SD400N/R Series
T = 190C
J
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
e
n
t
T
h
er
m
a
l
I
m
p
edan
c
e
Z
(
K
/
W
)
SD400N/R Series
Steady State Value:
R = 0.11 K/W
(DC Operation)
thJC
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