Powerex ND43__25 Data Sheet
Powerex, Inc., 173 Pavilion Lane, Youngwood, Pennsylvania 15697 (724) 925-7272 POW-R-BLOK
www.pwrx.com Dual SCR Isolated Module
250 Amperes / Up to 1600 Volts
OUTLINE DRAWING
M K
A
K1
G1
J
G
G2
K2
C
B
V
P
D
E
K1
G1
A
G2
K2
CONNECTION DIAGRAM
T - M8 THD. (3 TYP.)
K
A
Q
SCR 1
K
SCR 2
U - DIA. (4 TYP.)
AK
S
W
R
N
W
AK
ND43__25
F
H
L
Dual SCR Isolated
POW-R-BLOK
250 Amperes / Up to 1600 Volts
TM
Module
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 1.26 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.
Ordering Information:
Select the complete eight digit
module part number from the table
below.
Example: ND431625 is a 1600Volt,
250 Ampere Dual SCR Isolated
POW-R-BLOK
TM
Module
Type
ND43 06
Voltage
Volts
(x100)
08
10
12
14
16
Current
Amperes
(x 10)
25
ND43__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
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
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
TM
TM
has been tested and
Revision Date: 05/17/2010
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Powerex, Inc., 173 Pavilion Lane, Youngwood, Pennsylvania 15697 (724) 925-7272 POW-R-BLOK
ND43__25
TM
www.pwrx.com Dual SCR Isolated Module
250 Amperes / Up to 1600 Volts
Absolute Maximum Ratings
Characteristics Conditions Symbol Units
Repetitive Peak Forward and Reverse Blocking
Voltage
Non-Repetitive Peak Reverse Blocking Voltage
(t < 5 msec)
RMS Forward Current 180° Conduction, TC=89°C I
verage Forward Current 180° Conduction, TC=89°C I
Peak One Cycle Surge Current, Non-Repetitive 60 Hz, 100% V
Peak Three Cycle Surge Current, Non-Repetitive 60 Hz, 100%V
Peak Ten Cycle Surge Current, Non-Repetitive 60 Hz, 100% V
I2t for Fusing for One Cycle, 8.3 milliseconds I2t 322,000 A2 sec
Maximum Rate-of-Rise of On-State Current,
(Non-Repetitive)
V
D
T
=25°C, IG=500mA,
j
=0.67 V
T
Peak Gate Power Dissipation PGM 16 W
verage Gate Power Dissipation P
Peak Forward Gate Current I
Peak Forward Gate Voltage V
Peak Reverse Gate Voltage V
Operating Temperature TJ -40 to +130 °C
Storage Temperature T
Max. Mounting Torque, M6 Mounting Screw 45
Max. Mounting Torque, M8 Terminal Screw 110
Module Weight, Typical 840 g
1.85 lb
V Isolation @ 25C V
V
V
& V
DRM
RRM
1600 V
RSM
T(RMS)
250 A
T(AV)
reapplied I
RRM
reapplied I
RRM
reapplied I
RRM
8800 A
TSM
4685 A
TSM
4040 A
TSM
di/dt 800 A/µs
DRM (Rated), ITM
=π I
T(AV)
,
< 0.5µs, tp > 6µs
3 W
G(AV)
4 A
GFM
10 V
GFM
5 V
GRM
-40 to +150 °C
stg
2500 V
rms
up to 1600 V
393
in.-Lb.
5
Nm
in.-Lb.
12
Nm
Revision Date: 05/17/2010
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