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ND41__26
Powerex, Inc., Hillis Street, Youngwood, Pennsy l vania 15697 (724) 925-7272
Dual Diode Isolated Module
G
OUTLINE DRAWING
M
J
E
T - M8 THD. (3 TYP.)
K
A
C
B
A
Q
P
U - DIA. (4 TYP.)
AK
N
K
S
W
L
W
R
ND41__26
F
H
Dual Diode Isolated
POW-R-BLOK
TM
Module
260 Amperes / 600-2000 Volts
DIODE 1
K
A
DIODE 2
CONNECTION DIAGRAM
AK
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 1.35 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.
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: ND412026 is a 2000Volt,
260 Ampere Dual Diode Isolated
POW-R-BLOK
TM
Module
Type
ND41 06
Voltage
Volts
(x100)
08
10
12
14
16
18
20
:
Current
Amperes
(x10)
26
POW-R-BLOK
260 Amperes / Up to 2000 Volts
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:
T Electrically Isolated Heatsinking
T Aluminum Nitride Isolator
T Compression Bonded Elements
T Metal Baseplate
T Low Thermal Impedance
for Improved Current Capability
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
TM
TM
has been tested and
Revision Date: 11/1/2001
Page 2
ND41__26
Powerex, Inc., Hillis Street, Youngwood, Pennsy l vania 15697 (724) 925-7272
Dual Diode Isolated Module
POW-R-BLOK
260 Amperes / Up to 2000 Volts
TM
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 I
Average Forward Current 180° Conduction, TC=112°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
reapplied I
RRM
reapplied I
RRM
reapplied I
RRM
I2t for Fusing for One Cycle, 8.3 milliseconds I2t 266,000 A2 sec
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 V
up to 2000 V
RRM
V
RSM
F(RMS)
+ 200 V
RRM
408 A
260 A
F(AV)
8000 A
FSM
5750 A
FSM
4975 A
FSM
-40 to +150 °C
stg
in.-Lb.
5
Nm
in.-Lb.
12
2500 V
rms
Nm
Revision Date: 11/1/2001
Page 3
ND41__26
Powerex, Inc., Hillis Street, Youngwood, Pennsy l vania 15697 (724) 925-7272
Dual Diode Isolated Module
POW-R-BLOK
260 Amperes / Up to 2000 Volts
TM
Electrical Characteristics, TJ=25°C unless otherwise specified
Characteristics Symbol Test Conditions M i n. 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 2000V, TJ=150°C 50 mA
RRM
=1500A 1.35 V
FM
V
(TO)1
r
T1
V
(TO)2
r
T2
t
I
rr
= 150°C, I = 15%I
T
J
T
= 150°C, I = πI
J
TJ = 150°C, I = 15%I
V
= A+ B Ln I +C I + D Sqrt I
FM
= 1500A, Tp = 190 µs
fm
F(AV)
F(AV)
F(AV)
to πI
0.764
F(AV)
0.360 V mΩ
to I
.710
FSM
0.420 V mΩ
to I
FSM
A =
B =
C =
D =
0.7140
0.0232
4.72 E-4
-6.71 E-3
10
s
µ
di/dt = -25A/µs
Thermal Characteristics
Characteristics Symbol
Thermal Resistance, Junction to Case
Thermal Impedance Coefficients
R
Z
ΘJ-C
Θ
J-C
Per Module, both conducting
Per Junction both conducting
Z
Θ
J-C
+ K
+ K
+ K
Thermal Resistance, Case to Sink Lubricated
R
ΘC-S
= K1 (1-exp(-t/
(1-exp(-t/
2
(1-exp(-t/
3
(1-exp(-t/
4
))
τ
1
))
τ
2
))
τ
3
))
τ
4
Per Module 0.03 °C/W
= 5.27E-3
K
1
K2 = 1.17E-2
K3 = 5.26E-2
K4 = 6.97E-2
τ
1
τ
2
τ
3
τ
Max.
0.07
0.14
= 1.69E-4
= 2.07E-2
= 2.37E-1
= 2.46
4
Units
°C/W
°C/W
Revision Date: 11/1/2001
Page 4
ND41__26
_
Powerex, Inc., Hillis Street, Youngwood, Pennsy l vania 15697 (724) 925-7272
Dual Diode Isolated Module
Max i m um O n -S ta te F o rw ard V o l ta ge D ro p
5
4
3
2
On-State Voltage - Vfm - Volts
1
0
10 100 1000 10000
Maximu m On-State P o w e r Dis sipa tio n
300
250
200
150
100
50
Max. Power Dissipation Per Di ode - Watts_
0
0 50 100 150 200 250 300
( Tj = 150 °C )
Instantaneous On-State Current - Ifm - Amperes
(Sinusoidal Wa vef orm )
120°
90°
60°
30°
15°
180
0
CONDUCTION ANGLE
Average On-State Current - If(av) - Amperes
.16
.14
.12
.10
.08
.06
.04
Thermal Impedance - Rjc - °C/W
.02
.00
0.001 0.01 0.1 1 10 100
180°
360
150
145
140
135
130
125
120
Max. Case Temperature - Tcase -°C
115
110
0 50 100 150 200 25 0 300
POW-R-BLOK
260 Amperes / Up to 2000 Volts
Maximum Transient Thermal Impedance
(Junction to Case)
Time - t - Seconds
Maximu m Al lowable Case Temperature
(Sinusoidal Waveform)
15°
30°
Average On-State Current - If(av) - Amperes
TM
180
0
CONDUCTION ANGLE
60°
90°
120°
360
180°
Maximum On-State Power Dissipation
(Rectangular Waveform)
Max. Case Temperature - Tcase -°C_
150
140
130
120
110
100
90
400
350
300
250
200
150
100
Max. Power Dissipation Per Diode - Watts_
50
0
0 50 100 150 200 250 300 350 400 450
30°
15°
Average On-State Current - If(av) - Am pe res
60°
90°
120°
180°
0
CONDUCTION ANGLE
360°
270°
180
360
Maximum Allowable Case Temperature
(Rectangular Waveform)
180
0
90°
CONDUCTION ANGLE
120°
180°
15°
30°
60°
360
270°
360°C
0 50 100 150 200 250 300 350 400 450
Average On-State Current - If(av) - Amperes
Revision Date: 11/1/2001
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