Bulletin I2039 rev. B 10/02
300U(R) SERIES
STANDARD RECOVERY DIODES
Stud Version
Features
Alloy diode
Popular series for rough service
Stud cathode and stud anode version
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
300U
300
150
6550
6850
214
195
100 to 600
-65 to 200
Units
A
°C
A
A
KA
2
s
KA
2
s
V
°C
case style
DO-205AB (DO-9)
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300U(R) Series
Bulletin I2039 rev. B 10/02
ELECTRICAL SPECIFICATIONS
Voltage Ratings
Voltage
Type number
Code
10
20
300U
30
40
60
V
RRM
, maximum repetitive
peak reverse voltage
V
100
200
300
400
600
V
RSM
, maximum non-
repetitive peak rev. voltage
V
200
300
400
500
720
I
RRM
max.
T
J
= 175°C
mA
40
Forward Conduction
Parameter
I
F(AV)
I
FSM
Max. average forward current
@ Case temperature
Max. peak, one-cycle forward,
non-repetitive surge current
300U
300
130
6550
6850
5500
5750
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
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
1.40
t = 0.1 to 10ms, no voltage reapplied
(I
FM
x
π
x I
F(AV)
(942A peak), T
J
= 25°C
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%
300U(R)
-65 to 200
-65 to 200
0.18
0.08
37
28
Units
°C
Conditions
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
2
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300U(R) Series
Bulletin I2039 rev. B 10/02
∆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
0.020
0.024
0.031
0.045
0.077
Rectangular conduction Units
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
R
3
060
4
A
5
M
6
1
2
3
4
5
6
-
-
-
-
-
-
300
302
U
R
None
= Standard 300U device
= 300U Top Threaded version
= Essential Part Number
= Stud Reverse Polarity (Anode to Stud)
= Stud Normal Polarity (Cathode to Stud)
Voltage code: Code x 10 = V
RRM
(See Voltage Ratings table)
A
= Essential Part Number
Metric Device = M16x1.5
NOTE: For longer lead Contact Factory
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300U(R) Series
Bulletin I2039 rev. B 10/02
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)
53.34 (2.10) MAX.
27.94 (1.10)
DIA. MAX.
28.45 (1.12)
300U-A Series
Conforms to JEDEC DO-205AB (DO-9)
All dimensions in millimeters (inches)
21.03 (0.83)
20.14 (0.79)
MAX.
9.27 (0.365)
7.87 (0.310)
31.75 (1.250) max.
ACROSS FLATS
3.18 (0.125)
MAX.
UNTHREADED
PORTION
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.
28.45 (1.12)
MAX.
9.27 (0.365)
3/4"-16UNF-2A
19.02 (0.749)
DIA. MAX.
302U-A Series
IR Case Style B26
All dimensions in millimeters (inches)
3.18 (0.125)
MAX.
21.03 (0.828)
20.14 (0.793)
31.75 (1.250) max.
ACROSS FLATS
7.87 (0.310)
4
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300U(R) Series
Bulletin I2039 rev. B 10/02
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
130
120
110
0
100
30°
Conduction Period
70U/300U(R) Series
R
thJC
(DC) = 0.18 K/W
180
Conduction Angle
160
140
30°
120
60° 90°
120°
180°
200
250
300
350
60°
90°
120°
180°
DC
400
500
0
50
100
150
200
300
Average Forward Current (A)
Fig. 1 - Current Ratings Characteristics
Average Forward Current (A)
Fig. 2 - Current Ratings Characteristics
Maximum Average Forward Power Loss (W)
400
350
300
250
180°
120°
90°
60°
30°
RMS Limit
h
R
t
0.
2
0.
3
K/
W
SA
=
1
0.
0.
4K
K/
W
/W
W
K/
-D
ta
el
0. 5
0. 7
200
150
100
50
0
Conduction Angle
K/
W
W
R
K/
1K
/W
1. 5 K
/W
3 K/W
70/300U(R) Series
T
J
= 200°C
0
50
100
150
200
250
300
350
25
50
75
100
125
150
175
200
Average Forward Current (A)
Maximum Allowable Ambient Temperature (°C)
Fig. 3 - Forward Power Loss Characteristics
Maximum Average Forward Power Loss (W)
500
450
400
350
300
250
200
150
100
DC
180°
120°
90°
60°
30°
RMS Limit
Conduction Period
R
t
0.
2
K/
W
A
hS
=
1
0.
W
K/
-D
0.
3
0. 5
ta
el
K/
W
R
K /W
0 .7
50
0
0
100
200
70/300U(R) Series
T
J
= 200°C
W
1 .5 K/
W
3 K/W
1 K/
K/ W
300
400
500
25
50
75
100
125
150
175
200
Average Forward Current (A)
Maximum Allowable Ambient Temperature (°C)
Fig. 4 - Forward Power Loss Characteristics
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