Nd42 – C&H Technology ND42__21 User Manual
Page 2
Powerex, Inc., 173 Pavilion Lane, Youngwood, Pennsylvania 15697 (724) 925-7272
POW-R-BLOK
TM
www.pwrx.com
Dual SCR/Diode Isolated Module
210 Amperes / Up to 2000 Volts
Revision Date: 05/17/2010
ND42__21
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
ND42 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 1.26 32.0
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
.250 Dia.
6.35 Dia.
V
.110 x .032
2.8 x 0.8
W .12
3.0
Note: Dimensions are for reference only.
ND42__21
Dual SCR/Diode Isolated
POW-R-BLOK
TM
Module
210 Amperes / Up to 2000 Volts
Ordering Information
:
Select the complete eight digit
module part number from the table
below.
Example: ND422021 is a 2000Volt,
210 Ampere Dual SCR Isolated
POW-R-BLOK
TM
Module
Type
Voltage
Volts
(x100)
Current
Amperes
(x 10)
ND42 08
10
12
14
16
18
20
21
Description:
Powerex Dual SCR/Diode 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:
Electrically Isolated Heatsinking
Aluminum Nitride Insulator
Compression Bonded Elements
Metal Baseplate
Low Thermal Impedance
for Improved Current Capability
Quick Connect Gate Terminal
with Provision for Keyed Mating
Plug
UL Recognized (E78240)
Benefits:
No Additional Insulation
Components Required
Easy Installation
No Clamping Components
Required
Reduce Engineering Time
Applications:
Bridge Circuits
AC & DC Motor Drives
Battery Supplies
Power Supplies
Large IGBT Circuit Front Ends
CONNECTION DIAGRAM
A
G1
K1
K
AK
SCR 1
DIODE 2