Bulletin I2039 11/94
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
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1
70/300U(R) Series
Bulletin I2039 11/94
ELECTRICAL SPECIFICATIONS
Voltage Ratings
Voltage
Type number *
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
Type number
Voltage
Code
5
10
20
30
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
300U
* 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
2
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70/300U(R) Series
Bulletin I2039 11/94
Thermal and Mechanical Specifications
Parameter
T
J
T
stg
70/300U(R)
-65 to 200
-65 to 200
0.18
0.08
37
28
Units
°C
Conditions
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%
R
thJC
R
thCS
T
DC operation
K/W
Nm
g
JEDEC (See Outline Table)
Mounting surface, smooth, flat and greased
Not lubricated threads
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
72
= Standard 300U device
= Standard 70U device
= 300U Top Threaded version
= 70U with Pinch Bolt
= Essential Part Number
= Flat Base, available only on 72UF Series
2
3
4
5
6
-
-
-
-
-
U
F
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
NOTE: For longer lead Contact Factory
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3
70/300U(R) Series
Bulletin I2039 11/94
Outline Table
11.51 (0.453)
10.74 (0.423)
19.18 (0.755)
MAX.
4.32 (0.170) MAX.
8.89 (0.350)
DIA.
8.38 (0.330)
13.46 (0.530)
11.94 (0.470)
149.9 (5 .90)
134.6 (5.30)
53.3 4 (2.10) MAX.
27.94 (1.10)
DIA. MAX.
28.45 (1.12)
70U/300U-A Series
Conforms to JEDEC DO-205AB (DO-9)
All dimensions in millimeters (inches)
21.03 (0.8 3)
20.14 (0.7 9)
MAX.
9.27 (0.365)
7.87 (0.310)
3.18 (0.125)
MAX.
UNTHREADED
PORTION
31.75 (1.250)
30.94 (1.218) ACROSS FLATS
3/4"-16UNF-2A*
19.02 (0.749)
DIA. MAX.
* METRIC DEVICE. M16 X 1.5 FOR 300U..AM
METRIC DEVICE. M20 X 1.5 FOR 300U..AMA
9.50 (0.374) MAX. DIA.
3/8"-24UNF-2A
16.51 (0.65)
14.99 (0.59)
18.29 (0.72)
16.76 (0.66)
ACROSS FLATS
58.67 (2.31)
55.63 (2.19)
27.94 (1.10) DIA. MAX.
28.4 5 (1.12)
MAX.
9.27 (0.365)
3/4"-16UNF-2A
19.02 (0.749)
DIA. MAX.
IR Case Style B26
All dimensions in millimeters (inches)
21.03 (0.8 28)
3.18 (0.125)
MAX.
20.14 (0.7 93)
31.75 (1.250)
30.94 (1.218)
ACROSS FLATS
4
7.87 (0.310)
302U-A Series
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70/300U(R) Series
Bulletin I2039 11/94
Outline Table
Pinch Bolt
43-8223
11.19 (0.44) DIA.
20
(0.78)
41 (1.61)
24
(0.94)
2.4
(0.09)
12 (0.47)
50 (1.97) MAX.
DIA. 11.25 (0.44)
28.45 (1.12) MAX.
5.5 (0.21) DIA.
13
(0.51)
9.27 (0.365)
7.87 (0.310)
6
(0.23)
9 (0.35) ±
0.1 (0.004)
DIA.
16
(0.62)
33 (1.29)
31.75 (1.250)
36 (1.41) A/C
30.94 (1.218)
ACROSS FLAT
60 (2.36)
Spring Clamp
43-8222
72UF Series
Flat Base
50 (1.96)
24
(0.94)
FULL RAD.
27.6 (1.08)
All dimensions in millimeters (inches)
7 (0.27)
70UF supplied with spring clamp
72UF supplied with pinch bolt and spring clamp
48 (1.88)
Maximum Allowable Case Temperature (°C)
70/300U(R) Series
R
thJC
(DC) = 0.18 K/W
Maximum Allowable Case Temperature (°C)
200
200
190
180
170
160
150
140
70U/300U(R) Series
R
thJC
(DC) = 0.18 K/W
180
Conduction Angle
Conduction Period
160
140
30°
120
0
50
100
150
60° 90°
120°
180°
200
250
300
350
30°
130
120
110
0
100
60°
90°
120°
180°
200
300
DC
400
500
Average Forward Current (A)
Fig. 1 - Current Ratings Characteristics
Average Forward Current (A)
Fig. 2 - Current Ratings Characteristics
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DIA.
5
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