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ND47__25
Powerex, Inc., 173 Pavilion Lane, Youngwood, Pennsylvania 15697 (724) 925-7272
www.pwrx.com
POW-R-BLOK TM
Dual SCR/Diode Isolated Module
250 Amperes / Up to 1600 Volts
OUTLINE DRAWING
M K
A
T - M8 THD. (3 TYP.)
U - DIA. (4 TYP.)
AK
Description:
Powerex Dual SCR/Diode Modules are
designed for use in applications
requiring phase control and isolated
packaging. The modules are isolated
has been tested and
POW-R-BLOK
G J
G2
K2
V
C
B
A
K
Q
S
W
N
for easy mounting with other
components on a common heatsink.
TM
recognized by the Underwriters
Laboratories.
P
W
D E
R
L
H
F
ND47__25
Dual SCR/Diode Isolated
POW-R-BLOK TM Module
250 Amperes / 600-1600 Volts
Features:
Electrically Isolated Heatsinking
Aluminum Nitride Insulator
Compression Bonded Elements
DIODE 1
Metal Baseplate
G2
K2
A
K
SCR 2
AK
Low Thermal Impedance
for Improved Current Capability
Quick Connect Gate Terminal
with Provision for Keyed Mating
CONNECTION DIAGRAM
ND47 Outline Dimensions
Ordering Information :
Plug
UL Recognized
Module
Isolated POW-R-BLOK
Dimension
A
B
C
D
E
F
Inches
4.57
3.66
3.15
2.17
2.06
2.07
Millimeters
116
93
80.0
55.1
52.3
52.0
Select the complete eight digit
module part number from the table
below.
Example: ND471625 is a 1600Volt,
250 Ampere Dual SCR/Diode
TM
Benefits:
No Additional Insulation
Components Required
Easy Installation
No Clamping Components
Required
Reduce Engineering Time
G
H
J
K
L
M
1.97
1.90
1.50
1.38
1.26
1.122
50.0
48.3
38.1
35.0
32.0
28.5
Type
ND47
Voltage
Volts
(x100)
06
08
10
12
Current
Amperes
(x 10)
25
Applications:
Bridge Circuits
AC & DC Motor Drives
Battery Supplies
Power Supplies
Large IGBT Circuit Front Ends
N
P
Q
R
S
T
U
V
W
.71
.57
.625
.394
.350
M8 Metric
.250 Dia.
.110 x .032
.12
18.0
14.5
15.9
10.00
8.9
M8
6.35 Dia.
2.8 x 0.8
3.0
14
16
Note: Dimensions are for reference only.
Revision Date: 05/17/2010
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