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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
IF(AV) @ TC IFSM @ 50Hz @ 60Hz I2t @ 50Hz @ 60Hz VRRM range TJ 100 to 1000
70U
250 150 6550 6850 214 195
300U
300 130
Units
A C A A KA2s KA2s
50 to 1000
V C
case style DO-205AB (DO-9)
-65 to 200
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ELECTRICAL SPECIFICATIONS Voltage Ratings
Type number * Voltage Code
10 20 70U 40 60 80 100
Index
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VRRM , maximum repetitive peak reverse voltage V
100 200 400 600 800 1000
VRSM , maximum nonrepetitive peak rev. voltage V
200 300 500 720 960 1200
IRRM max.
TJ = 200C
mA
60
Voltage Type number Code
5 10 20 30 300U 40 60 80 100
VRRM , maximum repetitive peak reverse voltage V
50 100 200 300 400 600 800 1000
VRSM , maximum nonrepetitive peak rev. voltage V
100 200 300 400 500 720 960 1200
IRRM max.
TJ = 175C
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 KA2s t = 8.3ms t = 10ms t = 8.3ms KA s
2
No voltage reapplied 100% VRRM reapplied No voltage reapplied 100% VRRM reapplied Sinusoidal half wave, Initial TJ = TJ max.
It
2
Maximum I t for fusing
2
214 195 151 138
I t
2
Maximum I t for fusing
2
2140 0.610 0.751 1.30 --1.40
t = 0.1 to 10ms, no voltage reapplied
V F(TO) rf V FM
Max. value of threshold voltage Max. value of forward slope resistance Max. peak forward voltage
V TJ = 200C m V V (IFM x x IF(AV) (785A peak), TJ = 25C (IFM x x IF(AV) (942A peak), TJ = 25C
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Fig. 3 - Forward Power Loss Characteristics
Fig. 4 - Forward Power Loss Characteristics
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Fig. 7 - Forward Voltage Drop Characteristics
Fig. 8 - Thermal Impedance Z thJC Characteristic
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Thermal and Mechanical Specifications
Parameter
TJ Tstg RthJC RthCS 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%
Index
Next Data Sheet 70/300U(R) Series
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
RthJC Conduction
(The following table shows the increment of thermal resistence RthJC 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
TJ = TJ 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 = VRRM (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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Outline Table
11.51 (0.453) 10.74 (0.423) 19.18 (0.755) MAX.
Index
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4.32 (0.170) MAX.
8.89 (0.350) 8.38 (0.330)
DIA.
13.46 (0.530) 11.94 (0.470)
1 4 9 .9 (5 .9 0 )
1 3 4 .6 (5 .3 0 )
5 3 .3 4 (2 .1 0 ) M A X .
27.94 (1.10) DIA. MAX. 2 8 .45 (1 .1 2 )
70U/300U-A Series Conforms to JEDEC DO-205AB (DO-9)
All dimensions in millimeters (inches)
2 1.0 3 (0 .8 3 )
2 0.1 4 (0 .7 9 )
M AX .
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 1 6 .5 1 (0 .6 5 ) 1 4 .9 9 (0 .5 9 )
18.29 (0.72) 16.76 (0.66) ACROSS FLATS
5 8 .6 7 (2 . 3 1 )
5 5 .6 3 (2 . 1 9 )
27.94 (1.10) DIA. MAX. 2 8 .4 5 (1 . 1 2 ) M AX.
9 .2 7 ( 0 .3 6 5 ) 3/4"-16UNF-2A 19.02 (0.749) DIA. MAX.
IR Case Style B26
All dimensions in millimeters (inches)
2 1 .0 3 (0 .8 2 8 )
3.18 (0.125) MAX.
2 0 .1 4 (0 .7 9 3 )
31.75 (1.250) 30.94 (1.218) ACROSS FLATS
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7 .8 7 ( 0 .3 1 0 )
302U-A Series
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Outline Table
Index
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Pinch Bolt 43-8223
11.19 (0.44) DIA.
20 (0.78)
41 (1.61) 24 (0.94)
2.4 (0.09)
1 2 ( 0 .4 7 )
5 0 (1 .9 7 ) M A X .
DIA. 11.25 (0.44)
2 8 .4 5 ( 1 .1 2 ) M A X .
5.5 (0.21) DIA. 13 (0 .51)
9 .2 7 ( 0 .3 6 5 )
7 .8 7 ( 0 .3 1 0 )
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)
Fig. 1 - Current Ratings Characteristics
Fig. 2 - Current Ratings Characteristics
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D IA.

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