by SEMIKRON
B 8 9
Rectifier Diodes
SKN 2,5
SKNa 2
SKN 5
SKNa 4
Features
Reverse voltages up to 1600 V,
Avalanche types up to 1700 V
Hermetic metal cases with
glass insulators
Anode side threaded stud
ISO M4 (SKN 2,5, SKNa 2 with
lead wire in addition)
SKN: anode to stud
SKN 5, SKNa 4 with integrated
cooling fins
Typical Applications
All-purpose rectifier diodes
For severe ambient conditions
Avalanche Types
DC supply for magnets or
solenoids (brakes, valves, etc.)
Field coil supply for DC motos
Series connections for high
voltage applications (dust
precipitators)
V
RSM
I
FRMS
(maximum values for continuous operation)
V
RRM
5 A
10 A
I
FAV
(sin. 180; T
amb
= 45
C)
V
2,5 A
5 A
200
SKN 5/02
400
SKN 2,5/04
SKN 5/04
800
SKN 2,5/08
SKN 5/08
1200
SKN 2,5/12
SKN 5/12
1600
SKN 2,5/16
SKN 5/16
Avalanche Types
V
(BR)min
I
FAV
(sin. 180 C; T
amb
= 45 C)
V
2 A
3,7 A
1300
SKNa 2/13
SKNa 4/13
1700
SKNa 2/17
SKNa 4/17
Symbol Conditions
SKN2,5 SKNa2 SKN5 SKNa4 Units
I
FAV
T
amb
= 45
C; sin. 180
2,5
2
5
3,7
A
rec. 120
2,4
1,9
4,8
3,5
A
I
FSM
T
vj
= 25
C; 10 ms
180
190
A
T
vj
= T
vjmax
; 10 ms
150
160
A
i
2
t
T
vj
= 25
C; 8,3 ... 10 ms
160
180
A
2
s
T
vj
= T
vjmax
; 8,3 ... 10 ms
110
130
A
2
s
R
RSM
T
vj
= 150 C; t
p
= 10
s
3
3
W
Q
rr
T
vj
= 160
C;
di
F
dt
= 10
A
s
typ. 15
typ. 18
C
I
R
T
vj
= 25
C;V
R
= V
RRM
0,1
0,1
mA
V
R
= V
(BR)min
4
4
A
T
vj
= 180
C;V
R
= V
RRM
1,5
2,2
mA
V
F
T
vj
= 25
C;
1,2
1,25
1,2
V
(I
F
= . . .); max.
(10)
(15)
(10)
A
V
(TO)
T
vj
= T
vjmax
0,85
0,85
0,85
V
r
T
T
vj
= T
vjmax
30
25
30
m
R
thja
55
25
C/W
R
thjc
2,5
1,8
C/W
T
vjmin
40
40
C
T
vjmax
+180
+150
+180
+150
C
T
stg
55 ... + 180
C
M
SI units
0,8
Nm
US units
7
lb.in.
a
5 . 9,81
m/s
2
w
approx.
6
20
g
RC
P
R
= 1 W
500
0,02
F
R
p
P
R
= 2 W
270
k
Case
E 5
E 6
PDF 
ZIP
