© by SEMIKRON B 3 – 37
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 gates
Typical Applications
•DC motor control
(e. g. for machine tools)
•Controlled rectifier s
(e. g. for battery charging)
•AC controllers
(e. g. for temperature control)
V
RSM
V
RRM
dv I
TRMS
(maximum values for cont inuous o peration)
V
DRM
dt
cr
1000 A 1200 A
I
TAV
(sin. 180; T
case
= . . .; DSC)
VVV/µs 640 A (58 °C) 765 A (61 °C)
500 400 500 SKT 491/04 D –
900 800 1000 SKT 491/08 E SKT 551/08 E
1300 1200 500 SKT 491/12 D SKT 551/12 D
1000 SKT 491/12 E SKT 551/12 E
1500 1400 1000 SKT 491/14 E SKT 551/14 E
1700 1600 1000 SKT 491/16 E SKT 551/16 E
1900 1800 1000 SKT 491/18 E SKT 551/18 E
2100 2000 1000 SKT 491/20 E –
2300 2200 1000 SKT 491/22 E –
Symbol Conditions SKT 491 SKT 551
I
TAV
sin. 180; (T
case
= . . . ), DSC 490 A 550 A
(80 °C) (85 °C)
I
TSM
T
vj
= 25 °C 8000 A 9000 A
T
vj
= 125 °C 7000 A 8000 A
i
2
tT
vj
= 25 °C 320 000 A
2
s 405 000 A
2
s
T
vj
= 125 °C 245 000 A
2
s 320 000 A
2
s
t
gd
T
vj
= 25 °C; I
G
= 1 A; di
G
/dt = 1 A/µs typ. 1 µs
t
gr
V
D
= 0,67 . V
DRM
typ. 1 µs
(di/dt)
cr
f = 50 . . . 60 Hz 125 A/ µs
I
H
T
vj
= 25 °C; typ./max. 150 mA/500 mA
I
L
T
vj
= 25 °C; R
G
= 33 Ω; typ./max. 500 mA/2 A
t
q
T
vj
= 125 °C typ. 50 ... 150 µs
V
T
T
vj
= 25 °C; I
T
= 1500 A; max. 2,1 V 1,65 V
V
T(TO)
T
vj
= 125 °C 1,1 V 0,925 V
r
T
T
vj
= 125 °C 0,7 mΩ0,45 mΩ
I
DD
, I
RD
T
vj
= 125 °C; V
DD
= V
DRM
; V
RD
= V
RRM
50 mA 50 mA
V
GT
T
vj
= 25 °C3 V
I
GT
T
vj
= 25 °C 250 mA
V
GD
T
vj
= 125 °C 0,25 V
I
GD
T
vj
= 125 °C10 mA
R
thjc
cont.; 0,045 °C/W
sin. 180; DSC/SSC 0,047/0,100 °C/W
rec. 120; DSC/SSC 0,054/0,113 °C/W
R
thch
DSC/SSC 0,012/0,024 °C
T
vj
– 40 ... + 125 °C
T
stg
– 40 ... + 130 °C
F SI units 5,2 ... 8 kN
US units 1200 ... 1800 lbs.
w 105 g
Case → page B 3–32 B 11
0895
© by SEMIKRONB 3 – 38
© by SEMIKRON B 3 – 39
© by SEMIKRONB 3 – 40
