Bulletin I2039
70/300U(R) SERIES
STANDARD RECOVERY DIODES
Stud Version
Features
Alloy diode
Peak reverse voltage up to 1000V
Popular series for rough service
Standard JEDEC types
Stud cathode and stud anode version
250A
300A
Typical Applications
Welders
Power supplies
Motor controls
Battery chargers
General industrial current rectification
Major Ratings and Characteristics
Parameters
I
F(AV)
@ T
C
I
FSM
@ 50Hz
@ 60Hz
I
2
t
@ 50Hz
@ 60Hz
V
RRM
range
T
J
100 to 1000
70U
250
150
6550
6850
214
195
300U
300
130
Units
A
°C
A
A
KA
2
s
KA
2
s
50 to 1000
V
°C
case style
DO-205AB (DO-9)
-65 to 200
70/300U(R) Series
ELECTRICAL SPECIFICATIONS
Voltage Ratings
Type number *
Voltage
Code
10
20
70U
40
60
80
100
V
RRM
, maximum repetitive
peak reverse voltage
V
100
200
400
600
800
1000
V
RSM
, maximum non-
repetitive peak rev. voltage
V
200
300
500
720
960
1200
I
RRM
max.
T
J
= 200°C
mA
60
Voltage
Type number
Code
5
10
20
30
300U
40
60
80
100
V
RRM
, maximum repetitive
peak reverse voltage
V
50
100
200
300
400
600
800
1000
V
RSM
, maximum non-
repetitive peak rev. voltage
V
100
200
300
400
500
720
960
1200
I
RRM
max.
T
J
= 175°C
mA
40
40
40
40
40
40
35
30
* Also available as JEDEC series: 1N3735 through 1N3743; 1N2054 through 1N2068; 1N4044 through 1N4056.
Forward Conduction
Parameter
I
F(AV)
I
FSM
Max. average forward current
@ Case temperature
Max. peak, one-cycle forward,
non-repetitive surge current
70U
250
150
6550
6850
5500
5750
300U
300
130
Units
A
°C
Conditions
180° conduction, half sine wave
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
V
T
J
= 200°C
mΩ
--
1.40
V
V
No voltage
reapplied
100% V
RRM
reapplied
No voltage
reapplied
100% V
RRM
reapplied
Sinusoidal half wave,
Initial T
J
= T
J
max.
I
2
t
Maximum I
2
t for fusing
214
195
151
138
I
2
√t
V
F(TO)
r
f
V
FM
Maximum I
2
√t
for fusing
Max. value of threshold
voltage
Max. value of forward slope
resistance
Max. peak forward voltage
2140
0.610
0.751
1.30
--
t = 0.1 to 10ms, no voltage reapplied
(I
FM
x
π
x I
F(AV)
(785A peak), T
J
= 25°C
(I
FM
x
π
x I
F(AV)
(942A peak), T
J
= 25°C
70/300U(R) Series
Fig. 3 - Forward Power Loss Characteristics
Fig. 4 - Forward Power Loss Characteristics
70/300U(R) Series
Fig. 7 - Forward Voltage Drop Characteristics
Fig. 8 - Thermal Impedance Z
thJC
Characteristic
70/300U(R) Series
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%
70/300U(R)
-65 to 200
-65 to 200
0.18
0.08
37
28
Units
°C
Conditions
DC operation
K/W
Mounting surface, smooth, flat and greased
Not lubricated threads
Nm
g
JEDEC (See Outline Table)
Lubricated threads
wt
Approximate weight
Case style
250
DO-205AB (DO-9)**
** 302U-A uses IR case style B-26
∆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 Units
0.020
0.024
0.031
0.045
0.077
0.015
0.025
0.034
0.047
0.077
K/W
Conditions
T
J
= T
J
max.
Ordering Information Table
Device Code
300
1
U
2
3
R
4
100
5
A
6
1
-
300
70
302
= Standard 300U device
= Standard 70U device
= 300U Top Threaded version
= 70U with Pinch Bolt
= Essential Part Number
2
3
4
5
6
-
-
-
-
-
72
U
F
= Flat Base, available only on 72UF Series
None = Normal Stud
R
= Stud Reverse Polarity (Anode to Stud)
None = Stud Normal Polarity (Cathode to Stud)
Voltage code: Code x 10 = V
RRM
(See Voltage Ratings table)
A
= Essential Part Number only for 300U Series
None = 70U Series
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