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www.chtechnology.com
Powerex, Inc., 173 Pavilion Lane, Youngwood, Pennsylvania 15697 (724) 925-7272 POW-R-BLOK
www.pwrx.com Dual Diode Isolated Module
250 Amperes / Up to 3400 Volts
OUTLINE DRAWING
K
C
B
A
Q
DIODE 1
T - M8 THD. (3 TYP.)
K
M
G
J
E
ND41 Outline Dimensions
Dimension Inches Millimeters
A 4.57 116
B 3.66 93
C 3.15 80.0
E 2.06 52.3
F 2.05 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.
W .12 3.0
Note: Dimensions are for reference only.
A
P
K
A
DIODE 2
CONNECTION DIAGRAM
U - DIA. (4 TYP.)
AK
N
S
W
W
R
AK
L
F
H
ND413425
Dual Diode Isolated
POW-R-BLOKTM Module
250 Amperes / 2600 - 3400 Volts
Ordering Information:
Select the complete eight digit
module part number from the table
below.
Example: ND413425 is a 3400 Volt,
250 Ampere Dual Diode Isolated
POW-R-BLOK
TM
Module
Type
ND41 26
Voltage
Volts
(x100)
28
30
32
34
Current
Amperes
(x10)
25
Description:
Powerex Dual Diode Modules are
designed for use in applications
requiring rectification 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 Isolator
Compression Bonded Elements
Metal Baseplate
Low Thermal Impedance
for Improved Current Capability
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
ND413425
TM
TM
has been tested and
Revision Date: 07/13/2010
A
Powerex, Inc., 173 Pavilion Lane, Youngwood, Pennsylvania 15697 (724) 925-7272 POW-R-BLOK
ND413425
TM
www.pwrx.com Dual Diode Isolated Module
250 Amperes / Up to 3400 Volts
Absolute Maximum Ratings
Characteristics Conditions Symbol Units
Repetitive Peak Reverse Blocking Voltage V
Non-Repetitive Peak Reverse Blocking Voltage
V
(t < 5 msec)
RMS Forward Current 180° Conduction, TC=112°C
180° Conduction, T
180° Conduction, T
=101°C
C
=89°C
C
verage Forward Current 180° Conduction, TC=112°C
Peak One Cycle Surge Current, Non-Repetitive
Tj initial = 150C
180° Conduction, T
180° Conduction, T
60 Hz, 100% V
50 Hz, 100% V
C
C
reapplied
RRM
reapplied
RRM
=101°C
=89°C
60 Hz, 0V reapplied
50 Hz, 0V reapplied
Peak Three Cycle Surge Current, Non-Repetitive
Tj initial = 150C
60 Hz, 100% V
50 Hz, 100% V
reapplied
RRM
reapplied
RRM
60 Hz, 0V reapplied
50 Hz, 0V reapplied
Peak Ten Cycle Surge Current, Non-Repetitive
Tj initial = 150C
60 Hz, 100% V
50 Hz, 100% V
reapplied
RRM
reapplied
RRM
60 Hz, 0V reapplied
50 Hz, 0V reapplied
I2t for Fusing for One Cycle
Tj initial = 150C
8.3 msec, 100% V
10 msec, 100% V
8.3 msec, 0V reapplied
reapplied
RRM
reapplied
RRM
10 msec, 0V reapplied
Operating Temperature TJ -40 to +150 °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, 60Hz 1 sec
V
V Isolation @ 25C, 60Hz 60 sec
Information presented is based upon manufacturers testing and projected capabilities.
This information is subject to change without notice.
The manufacturer makes no claim as to the suitability of use, reliability, capability,
or future availability of this product.
up to 3400 V
RRM
V
RSM
I
F(RMS)
I
F(RMS)
I
F(RMS)
I
F(AV)
I
F(AV)
I
F(AV)
I
FSM
I
FSM
I
FSM
I
FSM
I
FSM
I
FSM
I
FSM
I
FSM
I
FSM
I
FSM
I
FSM
I
FSM
2
t
I
2
I
t
2
I
t
2
I
t
-40 to +150 °C
stg
+ 100 V
RRM
314
392
470
200
250
300
5000
4750
7500
7125
4015
3815
6020
5720
3155
2995
4730
4495
104,000
113,000
233,000
254,000
5
12
rms
V
rms
3600
3000
Revision Date: 07/13/2010
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
2
sec
A
2
A
sec
2
A
sec
2
A
sec
in.-Lb.
Nm
in.-Lb.
Nm
V
V
Powerex, Inc., 173 Pavilion Lane, Youngwood, Pennsylvania 15697 (724) 925-7272 POW-R-BLOK
ND413425
TM
www.pwrx.com Dual Diode Isolated Module
250 Amperes / Up to 3400 Volts
Electrical Characteristics, TJ=25°C unless otherwise specified
Characteristics Symbol Test Conditions Min. Max. Units
Repetitive Peak Reverse Leakage Current I
Peak On-State Voltage VFM I
Threshold Voltage, Low-level
Slope Resistance, Low-level
Threshold Voltage, High-level
Slope Resistance, High-level
VTM Coefficients, Full Range
Diode Reverse Recovery Time (Typical)
Up to 3400V, TJ=150°C 50 mA
RRM
=1500A 1.80 V
FM
V
(TO)1
r
T1
V
(TO)2
r
T2
t
I
rr
= 150°C, I = 15%I
T
J
= 150°C, I = πI
T
J
F(AV)
F(AV)
TJ = 150°C, I = 15%I
V
= A+ B Ln I +C I + D Sqrt I
FM
= 1500A, Tp = 190 µs
fm
F(AV)
to πI
1.095
F(AV)
0.482 V mΩ
to I
1.109
FSM
0.471 V mΩ
to I
FSM
A =
B =
C =
D =
1.1227
-1.08 E-2
4.53 E-4
2.42 E-2
20
s
µ
di/dt = -25A/µs
Thermal Characteristics
Characteristics Symbol
Thermal Resistance, Junction to Case
Thermal Impedance Coefficients
R
Z
ΘJ-C
ΘJ-C
Per Module, both conducting
Per Junction both conducting
Z
ΘJ-C
+ K
+ K
+ K
Thermal Resistance, Case to Sink Lubricated
R
ΘC-S
= K1 (1-exp(-t/τ1))
(1-exp(-t/τ2))
2
(1-exp(-t/τ3))
3
(1-exp(-t/τ4))
4
Per Module 0.03 °C/W
K
= 5.27E-3
1
K2 = 1.17E-2
K3 = 5.26E-2
K4 = 6.97E-2
Max.
Units
τ
1
τ2 = 2.07E-2
τ3 = 2.37E-1
0.07
0.14
= 1.69E-4
°C/W
°C/W
τ4 = 2.46
Revision Date: 07/13/2010
Powerex, Inc., 173 Pavilion Lane, Youngwood, Pennsylvania 15697 (724) 925-7272 POW-R-BLOK
www.pwrx.com Dual Diode Isolated Module
250 Amperes / Up to 3400 Volts
6.0
5.0
4.0
3.0
2.0
On-State Voltage - Vfm - Volts
1.0
0.0
10 100 1000 10000
450
400
350
300
250
200
150
100
50
Max. Power Di ssipati on Per Di ode - Watts
0
0 50 100 150 200 250 300
700
600
500
400
300
200
100
Max. Power Di ssipati on Per Diode -Watt s
0
0 50 100 150 200 250 300 350 400 450 500
Maximum On-State Forward Voltage Drop
Instantaneous On-State Current - Ifm - Amperes
Maximum On-State Power Dissipation
Average On-State Current -If(av) - Amperes
MaximumOn-State Power Dissipation
Av erage On-St ate Curr ent -If(av ) - Amperes
( Tj = 150 °C )
(Sinusoi dal Wav eform )
(Rectangu lar Wavef orm)
60°
120°
90°
60°
360°
180°
120°
90°
180°
ND413425
TM
Maximum Transient Thermal Impedance
(Junction to Case)
0.14
0.12
0.10
0.08
0.06
0.04
Thermal I mped anc e -Zjc -°C/W
0.02
0.00
0.0001 0.001 0.01 0.1 1 10 100
Maximum Allowable Case Temperature
150
140
130
120
110
100
Max. Case T emperat ure -Tcase -°C_
90
0 50 100 150 200 250 300
Average On-State Current - It(av) -Amp eres
Maximum Allowable Case Temperature
150
140
130
120
110
100
90
80
Max. Case Temper ature -Tcase -°C
70
60
0 50 100 150 200 250 300 350 400 450 500
Average On-State Current - If(av) - Amperes
Time -t - Seconds
(Sinusoida l Wavef orm)
60°
(Rectangular Waveform)
60°
90°
120°
90°
180°
120°
180°
360°C
Revision Date: 07/13/2010
V
V
Powerex, Inc., 173 Pavilion Lane, Youngwood, Pennsylvania 15697 (724) 925-7272 POW-R-BLOK
ND413425
TM
www.pwrx.com Dual Diode Isolated Module
250 Amperes / Up to 3400 Volts
1.0 10.0 100.0 1000.0
100,000
10,000
Peak Surge Cur rent (A)
1,000
0.1 1 10 100
1.0 10.0 100.0 1000.0
1.00E+07
1.00E+06
t (A)
2
1.00E+05
Maximum I
1.00E+04
0.1 1 10 100
1 10 100 1000
100,000
10,000
Peak Surge Cur rent ( A)
1,000
0.1 1 10 100
1.0 10.0 100.0 1000.0
1.00E+07
1.00E+06
t (A)
2
1.00E+05
Maximum I
1.00E+04
0.1 1 10 100
Maximum Surge Current Ratings - 60Hz
Duration of Surge (ms)
Number of Cycles @ 60Hz
Maximum I2t Ratings - 60Hz
Duration of Surge (ms)
Tj initial = 150oC
Number of Cycles @ 60Hz
Duration of Surge (ms)
Maximum Surge Ratings - 50Hz
Number of Cycles @ 50Hz
Maximum I2t Ratings -50Hz
Duration of Surge (ms)
Tj initial = 125oC
Number of Cy cles @ 50H z
Tj initial = 150oC
r = 0V
r = Vrrm
Vr = 0V
Vr = Vrrm
Tj initial = 150oC
Vr = 0V
Vr = Vrrm
Vr = 0V
Vr = Vrrm
Revision Date: 07/13/2010
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