Powerex, Inc., Hillis Street, Youngwood, Pennsylvania 15697 (724) 925-7272
POW-R-BLOK
TM
Dual SCR Isolated Module
250 Amperes / 1800 Volts
Revision Date: 11/1/2001
ND431825
CONNECTION DIAGRAM
A
K2
G2
G1
K1
K
AK
SCR 1
SCR 2
M
K
G
A
B
N
R
V
T - M8 THD. (3 TYP.)
U - DIA. (4 TYP.)
OUTLINE DRAWING
A
K
AK
J
C
S
P
Q
F
H
W
L
D E
G2
K2
W
G1
K1
ND43 Outline Dimensions
Dimension Inches
Millimeters
A 4.57 116
B 3.66
93
C 3.15 80.0
D 2.17 55.1
E 2.06 52.3
F 2.07 52.0
G 1.97 50.0
H 1.90 48.3
J 1.50 38.1
K 1.38 35.0
L 1.35 34.3
M 1.122 28.5
N .71 18.0
P .57 14.5
Q .625 15.9
R .394 10.00
S .350 8.9
T M8
Metric M8
U
.22 Dia.
5.6 Dia.
V
.110 x .032
2.8 x 0.8
W .12
3.0
Note: Dimensions are for reference only.
ND431825
Dual SCR Isolated
POW-R-BLOK
TM
Module
250 Amperes / 1800 Volts
Ordering Information
:
Select the complete eight digit
module part number from the table
below.
Example: ND431825 is a 1800Volt,
250 Ampere Dual SCR Isolated
POW-R-BLOK
TM
Module
Type
Voltage
Volts
(x100)
Current
Amperes
(x 10)
ND43 18
25
Description:
Powerex Dual 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.
POW-R-BLOK
TM
has been tested and
recognized by the Underwriters
Laboratories.
Features:
T Electrically Isolated Heatsinking
T Aluminum Nitride Insulator
T Compression Bonded Elements
T Metal Baseplate
T Low Thermal Impedance
for Improved Current Capability
T Quick Connect Gate Terminal
with Provision for Keyed Mating
Plug
T UL Recognized
Benefits:
T No Additional Insulation
Components Required
T Easy Installation
T No Clamping Components
Required
T Reduce Engineering Time
Applications:
T Bridge Circuits
T AC & DC Motor Drives
T Battery Supplies
T Power Supplies
T Large IGBT Circuit Front Ends
Powerex, Inc., Hillis Street, Youngwood, Pennsylvania 15697 (724) 925-7272
POW-R-BLOK
TM
Dual SCR Isolated Module
250 Amperes / 1800 Volts
Revision Date: 11/1/2001
ND431825
Absolute Maximum Ratings
Characteristics Conditions
Symbol
Units
Repetitive Peak Forward and Reverse Blocking
Voltage
V
DRM
& V
RRM
1800
V
Non-Repetitive Peak Reverse Blocking Voltage
(t < 5 msec)
V
RSM
1900 V
RMS Forward Current
180 Conduction, T
C
=84C I
T(RMS)
393
A
Average Forward Current
180 Conduction, T
C
=84C I
T(AV)
250 A
Peak One Cycle Surge Current, Non-Repetitive
60 Hz, 100% V
RRM
reapplied
I
TSM
8800 A
Peak Three Cycle Surge Current, Non-Repetitive
60 Hz, 100%V
RRM
reapplied
I
TSM
4685 A
Peak Ten Cycle Surge Current, Non-Repetitive
60 Hz, 100% V
RRM
reapplied
I
TSM
4040
A
I
2
t for Fusing for One Cycle, 8.3 milliseconds
I
2
t 322,000
A
2
sec
Maximum Rate-of-Rise of On-State Current,
(Non-Repetitive)
T
j
=25C, I
G
=500mA,
V
D
=0.67 V
DRM (Rated),
I
TM
=
I
T(AV)
,
T
r
< 0.5
s
, t
p
> 6s
di/dt 800 A/s
Peak Gate Power Dissipation
P
GM
16 W
Average Gate Power Dissipation
P
G(AV)
3 W
Peak Forward Gate Current
I
GFM
4 A
Peak Forward Gate Voltage
V
GFM
10 V
Peak Reverse Gate Voltage
V
GRM
5 V
Operating Temperature
T
J
-40
to
+130 C
Storage Temperature
T
stg
-40
to
+150 C
Max. Mounting Torque, M6 Mounting Screw
45
5
in.-Lb.
Nm
Max. Mounting Torque, M8 Terminal Screw
110
12
in.-Lb.
Nm
Module Weight, Typical
840
g
1.85
lb
V Isolation @ 25C
V
rms
2500 V
Powerex, Inc., Hillis Street, Youngwood, Pennsylvania 15697 (724) 925-7272
POW-R-BLOK
TM
Dual SCR Isolated Module
250 Amperes / 1800 Volts
Revision Date: 11/1/2001
ND431825
Electrical Characteristics, T
J
=25C unless otherwise specified
Characteristics Symbol
Test
Conditions
Min.
Max.
Units
Repetitive Peak Forward Leakage Current
I
DRM
1800V,
T
J
=130C
50
mA
Repetitive Peak Reverse Leakage Current
I
RRM
1800V,
T
J
=130C
50
mA
Peak On-State Voltage
V
FM
I
TM
=625A
1.40
V
Threshold Voltage, Low-level
Slope Resistance, Low-level
V
(TO)1
r
T1
T
J
= 130C, I = 15%I
T(AV)
to I
T(AV)
0.877
0.731
V
m
Threshold Voltage, High-level
Slope Resistance, High-level
V
(TO)2
r
T2
T
J
= 130C, I = I
T(AV)
to I
TSM
1.125
0.377
V
m
V
TM
Coefficients, Full Range
T
J
= 130C, I = 15%I
T(AV)
to I
TSM
V
TM
= A+ B Ln I +C I + D Sqrt I
A =
B =
C =
D =
0.695
4.272E-02
2.951E-04
8.766E-03
Minimum dV/dt
dV/dt
Exponential to 2/3 V
DRM
T
j
=130C, Gate Open
500
V/s
Turn-On Time (Typical)
t
on
I
TM
= 100A, V
D
= 100V
7
(Typical)
s
Turn-Off Time (Typical)
t
off
T
J
= 130C, I
T
= 250A
Re-Applied dV/dt = 20V/s
Linear to 0.8 V
DRM
150 (Typical)
s
Gate Trigger Current
I
GT
T
j
=25C, V
D
=12V
150
mA
Gate Trigger Voltage
V
GT
T
j
=25C, V
D
=12V
3.0
Volts
Non-Triggering Gate Voltage
V
GDM
T
j
=130C, V
D
= V
DRM
0.15
Volts
Thermal Characteristics
Characteristics Symbol
Max.
Units
Thermal Resistance, Junction to Case
R
J-C
Per Module, both conducting
Per Junction both conducting
0.07
0.14
C/W
C/W
Thermal Impedance Coefficients
Z
J-C
Z
J-C
= K
1
(1-exp(-t/
1
))
+ K
2
(1-exp(-t/
2
))
+ K
3
(1-exp(-t/
3
))
+ K
4
(1-exp(-t/
4
))
K
1
= 5.27E-3
K
2
= 1.17E-2
K
3
= 5.26E-2
K
4
= 6.97E-2
1
= 1.69E-4
2
= 2.07E-2
3
= 2.37E-1
4
= 2.46
Thermal Resistance, Case to Sink Lubricated
R
C-S
Per Module
0.03
C/W
Powerex, Inc., Hillis Street, Youngwood, Pennsylvania 15697 (724) 925-7272
POW-R-BLOK
TM
Dual SCR Isolated Module
250 Amperes / 1800 Volts
Revision Date: 11/1/2001
ND431825
0
180
360
CONDUCTION ANGLE
Maximum On-State Power Dissipation
15
30
60
90
120
180
0
50
100
150
200
250
300
350
0
50
100
150
200
250
Average On-State Current - It(av) - Amperes
M
a
x
.
Powe
r
Di
s
s
i
p
a
t
i
on
Pe
r
SCR -
W
a
t
t
s
_
(Sinusoidal Waveform)
0
180
360
CONDUCTION ANGLE
Maximum Allowable Case Temperature
120
90
60
30
15
180
80
85
90
95
100
105
110
115
120
125
130
0
50
100
150
200
250
Average On-State Current - It(av) - Amperes
Max. C
ase Temp
er
atu
r
e -
Tcase -
C
_
(Sinusoidal Waveform)
0
180
360
CONDUCTION ANGLE
Maximum On-State Power Dissipation
90
60
30
120
180
270
15
360
0
50
100
150
200
250
300
350
400
450
500
0
50
100
150
200
250
300
350
400
Average On-State Current - It(av) - Amperes
M
a
x
.
P
o
w
e
r D
i
s
s
i
p
a
tio
n
P
e
r S
C
R
- W
a
tts
_
(Rectangular Waveform)
0
180
360
CONDUCTION ANGLE
Maximum Allowable Case Temperature
270
180
120
90
60
30
15
360
60
70
80
90
100
110
120
130
0
50
100
150
200
250
300
350
400
Average On-State Current - It(av) - Amperes
Ma
x. C
a
s
e
T
e
mp
e
r
at
u
r
e -
T
cas
e -
C_
(Rectangular Waveform)
Maximum On-State Forward Voltage Drop
0
1
2
3
4
5
10
100
1000
10000
Instantaneous On-State Current - Itm - Amperes
O
n
-S
tat
e
V
o
lta
g
e
-
V
t
m
-
V
o
lts
( Tj = 130 C )
Maximum Transient Thermal Impedance
.00000
.02000
.04000
.06000
.08000
.10000
.12000
.14000
.00010
.00100
.01000
.10000
1.00000
10.00000
100.00000
Time - t - Seconds
Ther
m
a
l
I
m
pe
danc
e
- R
j
c
-
C
/
W
(Junction to Case)
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