Vishay high power products, Δ r conduction per junction – C&H Technology VSK.250PbF Series User Manual
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Document Number: 94417
4
Revision: 08-Oct-09
VSK.170PbF, VSK.250PbF Series
Vishay High Power Products
SCR/SCR and SCR/Diode
(MAGN-A-PAK Power Modules), 170 A/250 A
Note
•
Table shows the increment of thermal resistance R
thJC
when devices operate at different conduction angles than DC
Fig. 1 - Current Ratings Characteristics
Fig. 2 - Current Ratings Characteristics
Fig. 3 - On-State Power Loss Characteristics
Fig. 4 - On-State Power Loss Characteristics
ΔR CONDUCTION PER JUNCTION
DEVICES
SINUSOIDAL CONDUCTION AT T
J
MAXIMUM
RECTANGULAR CONDUCTION AT T
J
MAXIMUM
UNITS
180°
120°
90°
60°
30°
180°
120°
90°
60°
30°
VSK.170-
0.009
0.010
0.010
0.020
0.032
0.007
0.011
0.015
0.020
0.033
K/W
VSK.250-
0.009
0.010
0.014
0.020
0.032
0.007
0.011
0.015
0.020
0.033
60
70
80
90
100
110
120
130
0
40
80
120
160
200
30°
60°
90°
120°
180°
Average On-state Current (A)
M
a
x
im
u
m
A
llo
w
a
b
le C
a
s
e
T
e
m
p
e
ra
tu
re (
°C
)
Conduction Angle
VSK.170.. Series
R
thJC
(DC) = 0.17 K/W
60
70
80
90
100
110
120
130
0
50
100
150
200
250
300
DC
30°
60°
90°
120°
180°
Average On-state Current (A)
M
a
x
imu
m
A
llo
w
a
b
le
C
a
s
e
T
e
mp
e
ra
tu
re
(°
C
)
Conduction Period
VSK.170.. Series
R (DC) = 0.17 K/W
thJC
0
50
100
150
200
250
300
0
40
80
120
160
200
RMS Limit
Conduction Angle
M
a
xi
m
u
m
A
ve
ra
g
e
O
n
-s
ta
te
Po
w
e
r L
o
s
s
(W
)
Average On-state Current (A)
180°
120°
90°
60°
30°
VSK.170.. Series
Per Junction
T
J
= 125°C
0
50
100
150
200
250
300
350
0
50
100
150
200
250
300
DC
180°
120°
90°
60°
30°
RMS Limit
Conduction Period
M
a
x
imu
m
A
v
er
a
g
e On
-s
ta
te
Pow
e
r L
o
ss
(W
)
Average On-state Current (A)
VSK.170.. Series
Per Junction
T
J
= 125°C