Bulletin I2032 rev. B 03/03
301U(R) SERIES
STANDARD RECOVERY DIODES
Stud Version
Features
Wide current range
High voltage ratings up to 2500V
High surge current capabilities
Stud cathode and stud anode version
High resistance to acceleration
300A
Typical Applications
Converters
Power supplies
Machine tool controls
High power drives
Medium traction applications
Major Ratings and Characteristics
301U(R)
Parameters
I
F(AV)
@ T
C
I
F(RMS)
I
FSM
@ 50Hz
@ 60Hz
I
2
t
@ 50Hz
@ 60Hz
V
RRM
range
T
J
160 to 200
330
120
520
8250
8640
340
311
1600 to 2000
- 40 to 180
250
300
120
470
6050
6335
183
167
2500
- 40 to 180
Units
A
°C
A
A
A
KA
2
s
KA
2
s
V
°C
case style
DO-205AB (DO-9)
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301U(R) Series
Bulletin I2032 rev. B 03/03
ELECTRICAL SPECIFICATIONS
Voltage Ratings
Voltage
Type number
301U(R)
V
RRM
, maximum repetitive
peak reverse voltage
V
1600
2000
2500
V
RSM
, maximum non-
repetitive peak rev. voltage
V
1700
2100
2600
I
RRM
max.
@ T
J
= T
J
max.
Code
160
200
250
mA
15
Forward Conduction
Parameter
I
F(AV)
Max. average forward current
@ Case temperature
I
F(RMS)
Max. RMS forward current
I
FSM
Max. peak, one-cycle forward,
non-repetitive surge current
301U(R)
160 to 200 250
330
120
520
8250
8640
6940
7270
300
120
470
6050
6335
5090
5330
183
167
129
118
1830
0.90
Units Conditions
A
°C
A
DC @ T
C
= 115°C (up to 2000V), T
C
= 102°C (2500V)
t = 10ms
A
t = 8.3ms
t = 10ms
t = 8.3ms
t = 10ms
KA
2
s
t = 8.3ms
t = 10ms
t = 8.3ms
KA
2
√s
No voltage
reapplied
100% V
RRM
reapplied
No voltage
reapplied
100% V
RRM
reapplied
Sinusoidal half wave,
Initial T
J
= T
J
max.
180° conduction, half sine wave
I
2
t
Maximum I
2
t for fusing
340
311
241
220
I
2
√t
Maximum I
2
√t
for fusing
3400
0.77
t = 0.1 to 10ms, no voltage reapplied
(16.7% x
π
x I
F(AV)
< I <
π
x I
F(AV)
), T
J
= T
J
max.
V
F(TO)1
Low level value of threshold
voltage
V
F(TO)2
High level value of threshold
voltage
r
f
1
r
f
2
V
FM
Low level value of forward
slope resistance
High level value of forward
slope resistance
Max. forward voltage drop
V
0.84
0.97
(I >
π
x I
F(AV)
),T
J
= T
J
max.
(16.7% x
π
x I
F(AV)
< I <
π
x I
F(AV)
), T
J
= T
J
max.
mΩ
0.49
1.22
0.55
1.46
V
(I >
π
x I
F(AV)
),T
J
= T
J
max.
I
pk
= 942A, T
J
= T
J
max, t
p
= 10ms sinusoidal wave
0.49
0.59
2
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301U(R) Series
Bulletin I2032 rev. B 03/03
Thermal and Mechanical Specifications
Parameter
T
J
T
stg
R
thJC
R
thCS
T
Max. junction operating temperature range
Max. storage temperature range
Max. thermal resistance, junction to case
Max. thermal resistance, case to heatsink
Max. allowed mounting torque +0 -20%
301U(R)
-40 to 180
-40 to 200
0.14
0.08
37
28
Units
°C
Conditions
DC operation
K/W
Nm
Mounting surface, smooth, flat and greased
Not lubricated threads
Lubricated threads
wt
Weight
301U
303U
305U
307U
309U
250 ± 5
152 ± 5
177 ± 5
197 ± 5
160 ± 5
g
Case style
DO-205AB (DO-9)
See Outline Table
∆R
thJC
Conduction
(The following table shows the increment of thermal resistence R
thJC
when devices operate at different conduction angles than DC)
Conduction angle
180°
120°
90°
60°
30°
Sinusoidal conduction Rectangular conduction
80 to 200
0.015
0.018
0.023
0.034
0.056
Units
Conditions
250
0.015
0.018
0.023
0.034
0.056
00 to 200
0.011
0.019
0.025
0.035
0.057
250
0.011
0.019
0.025
0.035
0.057
K/W
T
J
= T
J
max.
Ordering Information Table
Device Code
30
1
1
2
U
3
A
4
250
5
1
2
-
-
30
1
3
5
7
9
= Essential Part Number
= Standard Device
= Top Threaded version
= Type for rotating application with Top Threaded
version 3/8 16UNC-2A
= Type for rotating application with flexible lead
= Type for rotating application with Top Threaded
version 3/8 24UNF
= Stud Normal Polarity (Cathode to Stud)
= Stud Reverse Polarity (Anode to Stud)
= Max. Leakage selection I
RRM
= 2mA T
J
= 25°C
3
4
5
-
-
-
U
UR
A
Voltage code: Code x 10=V
RRM
(See Voltage Ratings table)
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301U(R) Series
Bulletin I2032 rev. B 03/03
Outline Table
CERAMIC HOUSING
19 (0.75) MAX.
CERAMIC HOUSING
19 (0.75) MAX.
11 (0.43)
NOM.
24 (0.94)
MAX.
DIA. 8.7 (0.34) MAX.
12 (0.47)
MIN.
DIA. 8.5 (0.33)
301U
140 (5.51)
146 (5.75)
140 (5.51)
DO-205AB (DO-9)
148 (5.83)
MAX.
54 (2.13) MAX.
Case Style
28 (1.10)
MAX.
21 (0.83)
* FOR METRIC DEVICE: M16 X 1.5
CONTACT FACTORY
3/4"-16UNF-2A
21 (0.83)
MAX.
3/4"-16UNF-2A
32 (1.26)
3.9 (0.15)
IR Case Style B60
All dimensions in millimeters (inches)
CERAMIC HOUSING
3/8"-16UNC-2A
CERAMIC HOUSING
3/8"-24UNF-2A
6.4 (0.25)
MAX.
98 (3.86) MAX.
59 (2.32) MAX.
97 (3.82) MAX.
7 (0.28) MAX.
60 (2.36) MAX.
21 (0.83)
21 (0.83)
MAX.
3/4"-16UNF-2A
MAX.
7 (0.28) MAX.
7.6 (0.3)
MAX.
3/4"-16UNF-2A
305U
IR Case Style B61
16 (0.63)
309U
IR Case Style B41
4
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17.5 (0.69)
32 (1.26)
32 (1.26)
3.9 (0.15)
32 (1.26)
307U
301U(R) Series
Bulletin I2032 rev. B 03/03
Outline Table
CERAMIC HOUSING
3/8"-24UNF-2A
16.5 (0.65) MAX.
59.7 (2.35) MAX.
DIA. 27.3 (1.07)
MAX.
29 (1.14) MAX.
21 (0.83) MAX.
9 (0.35) MAX.
303U
3/4"-16UNF-2A
IR Case Style B40
Maximum Allowable Case T
emperature (°C)
301U(R) S
eries (1600V to 2000V)
R
thJC
(DC) = 0.14 K/ W
Maximum Allowable Cas T
e emperature (°C)
180
170
160
150
140
130
180
170
160
150
140
130
120
110
100
0
100
200
300
400
30°
60°
90°
120°
180°
DC
500
600
Conduction Period
17.5 (0.69)
32 (1.26)
301U(R S
) eries (1600V to 2000V)
R
thJC
(DC) = 0.14 K/ W
Conduction Angle
30°
120
110
0
50
100
150
60°
180°
90°
120°
200
250
300
350
Average Forward Current (A)
Fig. 1 - Current Ratings Characteristics
Average Forward Current (A)
Fig.2 - Current Ratings Characteristics
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