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STANDARD RECOVERY DIODES
Bulletin I2039 11/94
70/300U(R) SERIES
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
TypicalApplications
Welders
Power supplies
Motor controls
Battery chargers
General industrial current rectification
Major Ratings and Characteristics
Parameters
70U
300U
IF(AV)
IFSM
I2t
@ TC
@ 50Hz
@ 60Hz
@ 50Hz
250 300
150 130
6550
6850
214
@ 60Hz
195
VRRM range
TJ
100 to 1000 50 to 1000
-65 to 200
Units
A
°C
A
A
KA2s
KA2s
V
°C
250A
300A
case style
DO-205AB (DO-9)
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70/300U(R) Series
Bulletin I2039 11/94
ELECTRICAL SPECIFICATIONS
Voltage Ratings
Voltage
Type number * Code
VRRM , maximum repetitive
peak reverse voltage
V
VRSM , maximum non-
repetitive peak rev. voltage
V
IRRM max.
TJ = 200°C
mA
10 100
200
70U
Type number
20
40
60
80
100
Voltage
Code
200
400
600
800
1000
VRRM , maximum repetitive
peak reverse voltage
V
300
500
720
960
1200
VRSM , maximum non-
repetitive peak rev. voltage
V
60
IRRM max.
TJ = 175°C
mA
300U
5
10
20
30
40
60
80
100
50
100
200
300
400
600
800
1000
100
200
300
400
500
720
960
1200
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
70U 300U Units Conditions
I F(AV)
I FSM
Max. average forward current
@ Case temperature
Max. peak, one-cycle forward,
non-repetitive surge current
I2t Maximum I2t for fusing
I2t Maximum I2t for fusing
V
F(TO)
rf
Max. value of threshold
voltage
Max. value of forward slope
resistance
V Max. peak forward voltage
FM
250 300
150 130
6550
6850
5500
5750
214
195
151
138
2140
0.610
0.751
1.30
--
--
1.40
A
°C
A
KA2s
KA2s
180° conduction, half sine wave
t = 10ms No voltage
t = 8.3ms reapplied
t = 10ms 100% VRRM
t = 8.3ms reapplied Sinusoidal half wave,
t = 10ms No voltage Initial TJ = TJ max.
t = 8.3ms reapplied
t = 10ms 100% VRRM
t = 8.3ms reapplied
t = 0.1 to 10ms, no voltage reapplied
V
TJ = 200°C
m
V (IFM x π x IF(AV) (785A peak), TJ = 25°C
V
(I
FM
x
π
x
I
F(AV)
(942A
peak),
T
J
=
25°C
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70/300U(R) Series
Bulletin I2039 11/94
Thermal and Mechanical Specifications
Parameter
70/300U(R)
T
J
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%
-65 to 200
-65 to 200
0.18
0.08
37
wt Approximate weight
28
250
Units Conditions
°C
DC operation
K/W
Mounting surface, smooth, flat and greased
Not lubricated threads
Nm
Lubricated threads
g
Case style
** 302U-A uses IR case style B-26
DO-205AB (DO-9)** JEDEC (See Outline Table)
RthJC Conduction
(The following table shows the increment of thermal resistence RthJC when devices operate at different conduction angles than DC)
Conduction angle Sinusoidal conduction Rectangular conduction Units Conditions
180°
120°
90°
60°
30°
0.020
0.024
0.031
0.045
0.077
0.015
0.025
0.034
0.047
0.077
K/W
TJ = TJ max.
Ordering Information Table
Device Code
300 U
R 100 A
1234 56
1 - 300 = Standard 300U device
70 = Standard 70U device
302 = 300U Top Threaded version
72 = 70U with Pinch Bolt
2 - U = Essential Part Number
3 - F = Flat Base, available only on 72UF Series
None = Normal Stud Base 3/4"-16UNF-2A
4 - R = Stud Reverse Polarity (Anode to Stud)
None = Stud Normal Polarity (Cathode to Stud)
5 - Voltage code: Code x 10 = VRRM (See Voltage Ratings table)
6 - A = Essential Part Number only for 300U Series
None = 70U Series
NOTE: For longer lead Contact Factory
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