PRELIMINARY
Powerex, Inc., Hillis Street, Youngwood, Pennsylvania 15697 (724) 925-7272
POW-R-BLOK
TM
AC Switch SCR Isolated Module
1550 Amps RMS, Up to 1800 Volts
Description:
Powerex AC Switch SCR Modules are
designed for use in applications
requiring phase control and isolated
packaging. The modules are isolated
for easy mounting with other
components on a common heatsink.
Features:
Electrically Isolated Heatsinking
Compression Bonded Elements
Metal Baseplate
Low Thermal Impedance
for Improved Current Capability
Benefits:
No Additional Insulation
Components Required
Easy Installation
No Clamping Components
Required
Reduce Engineering Time
Applications:
Transfer Switches
AC Welders
Motor Soft Starters
07/21/2003
PA43__07
Ordering Information:
Select the complete eight-digit
module part number from the table
below.
Example: PA431807 is a 1800 Volt,
700A Average/SCR (1550 Ampere
RMS/Switch) SCR AC Switch
Isolated POW-R-BLOK
TM
Module
Type
Voltage
Volts (x100)
Current
Amperes
(x100)
PA43
12
14
16
18
07
Average
Current
Per SCR
PRELIMINARY
Powerex, Inc., Hillis Street, Youngwood, Pennsylvania 15697 (724) 925-7272
POW-R-BLOK
TM
AC Switch SCR Isolated Module
1550 Amps RMS, Up to 1800 Volts
Absolute Maximum Ratings
Characteristics Conditions
Symbol
Units
Repetitive Peak Forward and Reverse Blocking
Voltage
V
DRM
& V
RRM
1800
V
Non-Repetitive Peak Blocking Voltage
(t < 5 msec)
V
RSM
1900 V
RMS Current
(AC Switch, 180
o
Conduction)
180
Conduction, T
C
=74
C
180
Conduction, T
C
=78
C
180
Conduction, T
C
=82
C
180
Conduction, T
C
=86
C
I
T(RMS)
I
T(RMS)
I
T(RMS)
I
T(RMS)
1775
1665
1550
1440
A
A
A
A
Average Forward Current Per SCR
(180
o
Conduction)
180
Conduction, T
C
=74
C
180
Conduction, T
C
=78
C
180
Conduction, T
C
=82
C
180
Conduction, T
C
=86
C
I
T(AV)
I
T(AV)
I
T(AV)
I
T(AV)
800
750
700
650
A
A
A
A
Peak One Cycle Surge Current, Non-Repetitive
Tj = 25C, Vr = 0
60 Hz
50 Hz
I
TSM
I
TSM
69,000
63,000
A
A
Peak One Cycle Surge Current, Non-Repetitive
Tj = 25C, Vr = Vrrm
60 Hz
50 Hz
I
TSM
I
TSM
46,000
42,000
A
A
Peak One Cycle Surge Current, Non-Repetitive
Tj = 125C, Vr = 0
60 Hz
50 Hz
I
TSM
I
TSM
60,000
54,750
A
A
Peak One Cycle Surge Current, Non-Repetitive
Tj = 125C, Vr = Vrrm
60 Hz
50 Hz
I
TSM
I
TSM
40,000
36,500
A
A
Peak Three Cycle Surge Current, Non-Repetitive
60 Hz, Tj = 125C, Vr = Vrrm
I
TSM
32,100 A
Peak Ten Cycle Surge Current, Non-Repetitive
60 Hz, Tj = 125C, Vr = Vrrm
I
TSM
25,200
A
I
2
t for Fusing for One Cycle
Tj = 125C, Vr = Vrrm
8.3 milliseconds
10 milliseconds
I
2
t
I
2
t
6.60 x 10
6
6.66 x 10
6
A
2
sec
A
2
sec
Maximum Rate-of-Rise of On-State Current,
(Non-Repetitive)
Per JEDEC Standard 397 5.2.2.6
di/dt
400
A/
s
Maximum Rate-of-Rise of On-State Current,
(Repetitive)
Per JEDEC Standard 397 5.2.2.6
di/dt
150
A/
s
Operating Temperature
T
J
-40 to +125
C
Storage Temperature
T
stg
-40 to +150
C
Max. Mounting Torque, M6 Mounting Screw
132
15
in. Lb.
Nm
Max. Mounting Torque, M10 Terminal Screw
106
12
in. Lb.
Nm
Module Weight, Typical
5330
g
11.75
lb
V Isolation @ 25C
V
rms
3000 V
07/21/2003
PA43__07
PRELIMINARY
Powerex, Inc., Hillis Street, Youngwood, Pennsylvania 15697 (724) 925-7272
POW-R-BLOK
TM
AC Switch SCR Isolated Module
1550 Amps RMS, Up to 1800 Volts
Electrical Characteristics, T
J
=25
C unless otherwise specified
Characteristics Symbol
Test
Conditions
Min.
Max.
Units
Repetitive Peak Forward Leakage Current
I
DRM
Up to 1800V, T
J
=125
C
100
mA
Repetitive Peak Reverse Leakage Current
I
RRM
Up to 1800V, T
J
=125
C
100
mA
Peak On-State Voltage
V
FM
I
TM
=3000A, T
J
=125
C
1.30
V
Threshold Voltage, Low-level
Slope Resistance, Low-level
V
(TO)1
r
T1
T
J
= 125
C, I = 15%I
T(AV)
to I
T(AV)
0.703
0.184
V
m
Threshold Voltage, High-level
Slope Resistance, High-level
V
(TO)2
r
T2
T
J
= 125
C, I = I
T(AV)
to I
TSM
1.01
0.117
V
m
V
TM
Coefficients, Full Range
T
J
= 125
C, I = 50A to 6kA
V
TM
= A+ B Ln I +C I + D Sqrt I
A =
B =
C =
D =
0.7999
-4.62 E-02
7.33 E-05
1.10 E-02
Minimum dV/dt
dV/dt
Exponential to 0.67V
DRM
T
j
=125
C, Gate Open
600 Typ.
V/
s
Gate Trigger Current
I
GT
T
j
=25
C, V
D
=12V
200
mA
Gate Trigger Voltage
V
GT
T
j
=25
C, V
D
=12V
3.0
Volts
Non-Triggering Gate Voltage
V
GDM
T
j
=125
C, V
D
= V
DRM
0.15
Volts
Holding Current
I
H
300
mA
Peak Forward Gate Current
I
GTM
4.0
Amp
Peak Reverse Gate Voltage
V
GRM
5
Volts
Maximum Average Gate Power Dissipation
P
GM (AVE)
16
Watts
Thermal Characteristics
Characteristics Symbol
Max.
Units
Thermal Resistance, Junction to Case
R
J-C
Per Module, both conducting
Per Junction, both conducting
0.029
0.058
C/W
C/W
Thermal Impedance Coefficients
Z
J-C
Z
J-C
= K
1
(1-exp(-t/t
1
))
+ K
2
(1-exp(-t/t
2
))
+ K
3
(1-exp(-t/t
3
))
+ K
4
(1-exp(-t/t
4
))
K
1
= 5.04 E-04
K
2
= 2.31 E-03
K
3
= 2.83 E-03
K
4
=5.24 E-02
t
1
= 2.47 E-03
t
2
= 4.42 E-02
t
3
= 1.370
t
4
= 9.668
Thermal Resistance, Case to Sink Lubricated
R
C-S
Per Module
0.009
C/W
07/21/2003
PA43__07
PRELIMINARY
Powerex, Inc., Hillis Street, Youngwood, Pennsylvania 15697 (724) 925-7272
AC Switch SCR Module
1530 Amps RMS, Up to 1800 Volts
07/21/2003
PA43__07
Maximum Transient Thermal Impedance
0.00
0.01
0.02
0.03
0.04
0.05
0.06
0.001
0.01
0.1
1
10
100
Time - t - Seconds
Ther
m
a
l
I
m
p
edance -
R
j
c -
C
/
W
(Junction To Case)
Typical On-State Forward Voltage Drop
0
0.5
1
1.5
2
2.5
3
10
100
1000
10000
Instantaneous On-State Current - Itm - Amperes
O
n
-
S
ta
te
V
o
l
t
a
g
e
-
V
t
m
-
V
o
lts
(Tj = 125C)
0
180
360
CONDUCTION ANGLE
Maximum Allowable Case Temperature
120
90
60
30
15
180
70
80
90
100
110
120
130
0
100
200
300
400
500
600
700
800
Average On-State Current - It(av) - Amperes
Max.
Case Te
m
p
er
at
u
r
e
-
T
case -
C_
(Sinusoidal Waveform)
0
180
360
CONDUCTION ANGLE
Maximum On-State Power Dissipation
15
30
60
90
120
180
0
100
200
300
400
500
600
700
800
900
1000
0
100
200
300
400
500
600
700
800
Average On-State Current - It(av) - Amperes
Ma
x.
P
o
we
r Di
s
s
i
pa
ti
o
n
P
e
r
SCR -
W
a
t
t
s
_
(Sinusoidal Waveform)
0
180
360
CONDUCTION ANGLE
Maximum On-State Power Dissipation
360
15
270
180
120
30
60
90
0
200
400
600
800
1000
1200
1400
0
200
400
600
800
1000
1200
1400
Average On-State Current - It(av) - Amperes
M
a
x
.
Po
wer
Di
ss
i
p
a
t
i
o
n
Per
SCR
-
Wa
t
t
s
_
(Rectangular Waveform)
0
180
360
CONDUCTION ANGLE
Maximum Allowable Case Temperature
270
180
120
90
60
30
15
360
50
60
70
80
90
100
110
120
130
0
200
400
600
800
1000
1200
1400
Average On-State Current - It(av) - Amperes
M
ax.
C
ase
Tem
p
eratu
r
e -
T
case -C_
(Rectangular Waveform)
PRELIMINARY
Powerex, Inc., Hillis Street, Youngwood, Pennsylvania 15697 (724) 925-7272
AC Switch SCR Module
1550 Amps RMS / 1800 Volts
PA43__07
07/21/2003