Page 1
SKN 71, SKR 71
1
2019-08-20 RP
© by SEMIKRON
Stud Diode
Rectifier Diode
SKN 71
SKR 71
Features
Reverse voltages up to 1600 V
Hermetic metal case with glass
insulator
Cooling via heatsinks
Threaded stud ISO M8, M6 or
¼ - 28 UNF 2A2)
SKN: anode to stud
SKR: cathode to stud
Typical Applications *
All purpose high power rectifier
diodes
Non-controllable and half-
controllable rectifiers
Free-wheeling diodes
Recommended snubber
network:
RC: 0,1 µF, 100 (PR = 2W),
Rp: 80 k (PR = 6 W)
1) Mounting with grease-like thermal
compound or joint contact compound
2) M8x1,25 is standard, “UNF” should be
added in description for ¼ - 28 2A thread,
while “M6” must be added for M6x1
SKN SKR
V
RSM
V
V
RRM
V
I
FRMS
= 150 A (maximum value for continuous operation)
I
FAV
= 72 A (sin. 180; Tc = 125 ºC)
200
200
SKN 71/02
SKR 71/02
400
400
SKN 71/04
SKR 71/04
800
800
SKN 71/08
SKR 71/08
1200
1200
SKN 71/12
SKR 71/12
1400
1400
SKN 71/14
SKR 71/14
1600
1600
SKN 71/16
SKR 71/16
Symbol
Condition
Values
Units
I
FAV
sin. 180 ; TC = 100 ºC
94
A
ID
K 1,1; Ta = 45°C; B2 / B6
112 / 159
A K 1,1F; Ta = 35°C; B2 / B6
174 / 246
A
I
FSM
T
vj
= 25º C ; 10 ms
1150
A T
vj
= 180º C ; 10 ms
1000
A
i2t T
vj
= 25º C ; 8,3...10 ms
6600
A2s
T
vj
= 180º C ; 8,3...10 ms
5000
A2s
VF
Tvj = 25º C, IF = 200 A
max. 1,5
V
V
(TO)
T
vj
= 180º C
max. 0,85
V
rT
T
vj
= 180º C
max. 3
m
IRD
T
vj
= 180º C ; VRD = V
RRM
max. 10
mA
Qrr
Tvj = 160°C, -diF/dt = 10 A/µs
70
µC
R
th(j-c)
0,55
K/W
R
th(c-s)
0,2
K/W
Tvj -40...+180
°C
T
stg
-55...+180
°C
V
isol
-
V~
Ms
M8 Stud
4
Nm
M6 or ¼ - 28 UNF 2A
2,5
Nm
M8 Stud (lubricated)1)
3
Nm
M6 or ¼ - 28 UNF 2A (lubricated)1)
2
Nm
a
5 * 9,81
m/s
2
m
approx.
18
g
Case E 11
Page 2
SKN 71, SKR 71
2
2019-08-20 RP
© by SEMIKRON
Fig. 1L Power dissipation vs. forward current
Fig. 2 Forward current vs. case temperature
Fig. 5 Forward characteristics
Fig. 1R Power dissipation vs. ambient temperature
Fig. 4 Transient thermal impedance vs. time
Fig. 6 Surge overload current vs. time
Page 3
SKN 71, SKR 71
3
2019-08-20 RP
© by SEMIKRON
Dimensions in mm
Case E11 (IEC 60191: A 16 U; A 17 MB 2; JEDEC: DO-203 AB)
*IMPORTANT INFORMATION AND WARNINGS
The specifications of SEMIKRON products may not be considered as guarantee or assurance of product characteristics
("Beschaffenheitsgarantie"). The specifications of SEMIKRON products describe only the usual characteristics of products to
be expected in typical applications, which may still vary depending on the specific application. Therefore, products must be
tested for the respective application in advance. Application adjustments may be necessary. The user of SEMIKRON
products is responsible for the safety of their applications embedding SEMIKRON products and must take adequate safety
measures to prevent the applications from causing a physical injury, fire or other problem if any of SEMIKRON products
become faulty. The user is responsible to make sure that the application design is compliant with all applicable laws,
regulations, norms and standards. Except as otherwise explicitly approved by SEMIKRON in a written document signed by
authorized representatives of SEMIKRON, SEMIKRON products may not be used in any applications where a failure of the
product or any consequences of the use thereof can reasonably be expected to result in personal injury. No representation or
warranty is given and no liability is assumed with respect to the accuracy, completeness and/or use of any information
herein, including without limitation, warranties of non-infringement of intellectual property rights of any third party.
SEMIKRON does not assume any liability arising out of the applications or use of any product; neither does it convey any
license under its patent rights, copyrights, trade secrets or other intellectual property rights, nor the rights of others.
SEMIKRON makes no representation or warranty of non-infringement or alleged noninfringement of intellectual property
rights of any third party which may arise from applications. Due to technical requirements our products may contain
dangerous substances. For information on the types in question please contact the nearest SEMIKRON sales office. This
document supersedes and replaces all information previously supplied and may be superseded by updates. SEMIKRON
reserves the right to make changes.
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