by SEMIKRON
B 3 37
0898
V
RSM
V
RRM
(dv/dt)
cr
I
TRMS
(maximum values for continuous operation)
V
DRM
1000 A
1200 A
I
TAV
(sin. 180; T
case
= . . .; DSC)
V
V
V/
s
640 A (58 C)
765 A (61 C)
500
900
1300
1500
1700
1900
2100
2300
400
800
1200
1400
1600
1800
2000
2200
500
1000
1000
1000
1000
1000
1000
1000
SKT 491/04 D
SKT 491/08 E
SKT 491/12 E
SKT 491/14 E
SKT 491/16 E
SKT 491/18 E
SKT 491/20 E
SKT 491/22 E
SKT 551/08 E
SKT 551/12 E
SKT 551/14 E
SKT 551/16 E
SKT 551/18 E
Symbol Conditions
SKT 491
SKT 551
Units
I
TAV
sin. 180; (T
case
= . . .); DSC
490
(80)
550
(85)
A
C
I
TSM
i
2
t
T
vj
= 25 C
T
vj
= 125 C
T
vj
= 25 C
T
vj
= 125 C
8 000
7 000
320 000
245 000
9 000
8 000
405 000
320 000
A
A
A
2
s
A
2
s
t
gd
t
gr
T
vj
= 25 C
I
G
= 1 A
di
G
/dt = 1 A/
s
V
D
= 0,67
.
V
DRM
typ. 1
typ. 1
s
s
(di/dt)
cr
I
H
I
L
t
q
f = 50 ... 60 Hz
T
vj
= 25 C; typ./max.
T
vj
= 25 C; R
G
= 33
; typ./max.
T
vj
= 125 C; typ.
125
150 / 500
0,5 / 2
50 ... 150
A/
s
mA
A
s
V
T
V
T(TO)
r
T
T
vj
= 25 C; I
T
= 1500 A; max.
T
vj
= 125 C
T
vj
= 125 C
2,1
1,1
0,7
1,65
0,925
0,45
V
V
m
I
DD
; I
RD
T
vj
= 125 C; V
RD
= V
RRM
V
DD
= V
DRM
50
mA
V
GT
I
GT
V
GD
I
GD
T
vj
= 25 C
T
vj
= 25 C
T
vj
= 125 C
T
vj
= 125 C
3
250
0,25
10
V
mA
V
mA
R
thjc
R
thch
T
vj
T
stg
cont.;
sin. 180; DSC/SSC
rec. 120; DSC/SSC
DSC/SSC
0,045
0,047 / 0,100
0,054 / 0,113
0,012 / 0,024
40 ... + 125
40 ... + 130
C/W
C/W
C/W
C/W
C
C
F
w
SI units
US units
5,2 ... 8
1200 ... 1800
105
kN
lbs.
g
Case
page B 3 32
B 11
Thyristors
SKT 491
SKT 551
Features
Hermetic metal/ceramic cases
Capsule packages for double
sided cooling
Shallow design with single
sided cooling
International standard cases
Off-state and reverse voltages
up to 1800 V
Amplifying gate
Typical Applications
DC motor control
(e. g. for machine tools)
Controlled rectifiers
(e. g. for battery charging)
AC controllers
(e. g. for temperature control)
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