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Features
Diffused diode
Wide current range
High voltage ratings up to 1600V
High surge current capabilities
Stud cathode and stud anode version
Typical Applications
Converters
Power supplies
Machine tool controls
High power drives
Medium traction applications
Major Ratings and Characteristics
I
F(AV)
250
A
@ T
C
145
C
I
F(RMS)
390
A
I
FSM
@
50Hz
6550
A
@ 60Hz
6850
A
I
2
t
@
50Hz
214
KA
2
s
@ 60Hz
195
KA
2
s
V
RRM
range
1200 to 1600
V
T
J
- 40 to 200
C
Parameters
70/300U(R)..D
Units
case style
DO-205AB (DO-9)
STANDARD RECOVERY DIODES
250A
Stud Version
70/300U(R)..D SERIES
Bulletin I2031/A
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70/300U(R)..D 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
120
1200
1300
160
1600
1700
70/300U(R)..D
60
I
F(AV)
Max. average forward current
250
A
180 conduction, half sine wave
@ Case temperature
145
C
I
F(RMS)
Max. RMS forward current
390
A
DC @ 134C case temperature
I
FSM
Max. peak, one-cycle forward,
6550
t = 10ms
No voltage
non-repetitive surge current
6850
t = 8.3ms
reapplied
5500
t = 10ms
100% V
RRM
5750
t = 8.3ms
reapplied
Sinusoidal half wave,
I
2
t
Maximum I
2
t for fusing
214
t = 10ms
No voltage
Initial T
J
= T
J
max.
195
t = 8.3ms
reapplied
151
t = 10ms
100% V
RRM
138
t = 8.3ms
reapplied
I
2
t
Maximum I
2
t for fusing
2140
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
1.30
V
I
pk
= 785A, T
J
= 25C, t
p
= 10ms sinusoidal wave
Parameter
70/300U(R)..D
Units
Conditions
Forward Conduction
KA
2
s
A
V
m
0.49
(I >
x I
F(AV)
),T
J
= T
J
max.
0.75
(16.7% x
x I
F(AV)
< I <
x I
F(AV)
), T
J
= T
J
max.
0.83
(I >
x I
F(AV)
),T
J
= T
J
max.
0.61
(16.7% x
x I
F(AV)
< I <
x I
F(AV)
), T
J
= T
J
max.
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70/300U(R)..D Series
T
J
Max. junction operating temperature range
-40 to 200
T
stg
Max. storage temperature range
-40 to 200
R
thJC
Max. thermal resistance, junction to case
0.18
DC operation
R
thCS
Max. thermal resistance, case to heatsink
0.08
Mounting surface, smooth, flat and greased
T
Max. allowed mounting torque +0 -20%
37
Not lubricated threads
28
Lubricated threads
wt
Approximate weight
250
g
Case style
DO-205AB (DO-9)
See Outline Table
Parameter
70/300U(R)..D
Units
Conditions
Thermal and Mechanical Specifications
C
K/W
Nm
R
thJC
Conduction
(The following table shows the increment of thermal resistence R
thJC
when devices operate at different conduction angles than DC)
180
0.020
0.015
T
J
= T
J
max.
120
0.024
0.025
90
0.031
0.034
60
0.045
0.047
30
0.077
0.077
Conduction angle
Sinusoidal conduction
Rectangular conduction Units
Conditions
K/W
Ordering Information Table
300
U
F
R
160
A
Y
P
D
1
2
3
4
5
6
Device Code
7
8
9
1
-
300
= Standard 300U device
70
= Standard 70U device
302
= 300U Top Threaded version
72
= 70U Top Threaded version
2
-
U
= Essential Part Number
3
-
F
= Flat Base (with Pinch Bolt)
None = Normal Stud
4
-
R
= Stud Reverse Polarity (Anode to Stud)
None = Stud Normal Polarity (Cathode to Stud)
5
-
Voltage code: Code x 10 = V
RRM
(See Voltage Ratings table)
6
-
A
= Essential Part Number only for 300U Series
None = 70U Series
7
-
Y
= European Lead
None = Standard Lead
8
-
P
= Forward Selection (1.045V < V
FM
< 1.125V, I
FM
= 470A, T
J
= 25C)
9
-
D
= Diffused diode
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70/300U(R)..D Series
Outline Table
All dimensions in millimeters (inches)
70/300UF
DO-205AB (DO-9)
Flat Base
70/300U
DO-205AB (DO-9)
GLASS-METAL SEAL
19
5

(
7
.
6
8)
M
A
X
.
(
E
ur
o
pean
l
ead
)
21 (
0
.
8
3)
M
AX.
3
2
(
1
.
26)
16.7 (0.66) MAX.
28
(
1
.
1
0
)
M
AX.
145
(
5
.
71)
M
A
X
.

(
S
t
and
a
r
d
l
ead
)
DIA. 8.5 (0.33) NOM.
21
(
0
.
8
3)
MA
X
.
3 (
0
.
1
2
)
3/4"-16UNF-2A
GLASS-METAL SEAL
1
9
5

(
7
.
6
8
)

M
A
X
.
(
E
ur
ope
an

l
e
ad)
32
(
1
.
2
6)
16.7 (0.66) MAX.
28
(
1
.
10)
M
AX.
13
5
(
5
.
31)
M
A
X
.

(
S
t
a
nda
r
d
l
ead)
DIA. 8.5 (0.33) NOM.
2
1
(
0
.8
3
)
M
AX.
3 (
0
.
1
2
)
36 (1.41)
To Order
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70/300U(R)..D Series
All dimensions in millimeters (inches)
72/302UF
IR Case Style B26
Flat Bse
Outline Table
72/302U
IR Case Style B26
Spring Clamp
K41-0232
Pinch Bolt
35-0066
GLASS-METAL SEAL
76 (
2
.
99)

M
A
X
.
21
(
0
.
83)
M
A
X
.
63 (
2
.
48)
3/8"-24UNF-2A
55
(
2
.
17)
12.
7 (
0
.
5
)
MI
N
.
32 (
1
.
26)
3/4"-16UNF-2A
16 (
0
.
6
3)
11.19
(0.44) DIA.
MA
X
.
12
(0
.
4
7
)
5
0
(
1
.
97)
M
A
X
.
32 (
1
.
2
6)
GLASS-METAL SEAL
8.
8
(
0
.
34)
2
7
.
3
(
1
.
0
7)
N
O
M
.
36 (1.41)
41 (1.61)
24
(0.94)
2.4
(0.09)
DIA. 11.25 (044)
13
(0
.
5
1
)
9 (0.35)
0.1 (0.004)
DIA.
5.5 (0.21) DIA.
16
(0.62)
33 (1.29)
6
(0.23)
20
(0
.
7
8
)
60 (2.36)
24
(0.94)
48 (1.88)
50
(
1
.
96)
7 (0.27)
27.
6
(
1
.
80)
DI
A
.
FULL RAD.
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