Powerex LD81__45 Data Sheet
Powerex, Inc., 173 Pavilion Lane, Youngwood, Pennsylvania 15697 (724) 925-7272 POW-R-BLOK
www.pwrx.com
Dual Diode Isolated Module
LD81__45
TM
450 Amperes / Up to 4000 Volts
OUTLINE DRAWING
R
J F
Q - DIA. (4
TYP.)
E
3
CONNECTION DIAGRAM
Ordering Information:
Select the complete eight-digit module
part number from the table below.
Example: LD814045 is a 4000V,
450 Ampere Dual Diode Isolated
POW-R-BLOK
A
B
C
3
2
L H
TM
Module.
P - M10 THD (3
TYP.)
1
K DG
M
S
N
12
Voltage
Type
LD81 40
Volts
(x100)
38
36
32
Current
Amperes
(x10)
45
LD814045
Dual Diode POW-R-BLOK
450 Amperes / Up to 4000 Volts
LD81 Outline Dimensions
Dimension Inches Millimeters
A 5.91 150.0
B 4.88 124.0
C 4.41 112.0
D 2.36 60.0
E 2.05 52.0
F 1.97 50.0
G 1.89 48.0
H 1.73 44.0
J 1.22 31.0
K 1.10 28.0
L 1.00 25.4
M 0.69 17.5
N 0.39 10.0
P M10 Metric M10
Q 0.26 Dia. 6.5 Dia.
R 0.24 6.0
S 0.12 3.0
T .110 x .032 2.5 x 0.8
Note: Dimensions are for reference only.
TM
Module
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.
TM
has been tested and
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:
Power Supplies
Bridge Circuits
AC & DC Motor Drives
Battery Supplies
Large IGBT Circuit Front Ends
Revision Date: 12/10/2008
A
2
2
Powerex, Inc., 173 Pavilion Lane, Youngwood, Pennsylvania 15697 (724) 925-7272 POW-R-BLOK
www.pwrx.com
Dual Diode Isolated Module
450 Amperes / Up to 4000 Volts
LD81__45
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=107°C
180° Conduction, T
=88°C
C
verage Forward Current 180° Conduction, TC=107°C
=88°C
C
RRM
reapplied
RRM
RRM
reapplied
RRM
reapplied
RRM
RRM
RRM
RRM
reapplied
RRM
RRM
reapplied
RRM
reapplied
RRM
reapplied
reapplied
reapplied
reapplied
reapplied
reapplied
Peak One Cycle Surge Current, Non-Repetitive
Peak Three Cycle Surge Current, Non-Repetitive
Peak Ten Cycle Surge Current, Non-Repetitive
I2t for Fusing for One Cycle
180° Conduction, T
60 Hz, T
60 Hz, T
50 Hz, T
50 Hz, T
50 Hz, T
60 Hz, T
60 Hz, T
60 Hz, T
60 Hz, T
50 Hz, T
50 Hz, T
50 Hz, T
=125°C,100% V
J
=25°C, No V
J
=125°C,100% V
J
=125°C, No V
J
=25°C, No V
J
=125°C,100% V
J
=125°C,100% V
J
=125°C,100% V
J
=25°C, No V
J
=125°C,100% V
J
=125°C, No V
J
=25°C, No V
J
Operating Temperature TJ -40 to +150 °C
Storage Temperature T
Max. Mounting Torque, M6 Mounting Screw
Max. Mounting Torque, M10 Terminal Screw
Module Weight, Typical 1500 g
3.30 lb
V Isolation @ 25C 60 Hz, t = 1 minute V
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 4000 V
RRM
V
RSM
I
F(RMS)
I
F(RMS)
I
F(AV)
I
F(AV)
I
FSM
I
FSM
I
FSM
I
FSM
I
FSM
8,830 A
I
FSM
6,940 A
I
FSM
t
I
2
t
I
2
t
I
2
t
I
2
t
I
-40 to +150 °C
stg
rms
+ 100 V
RRM
710
900
450
575
11,000
19,140
10,040
15,050
17,450
504,000
6
1.53 x 10
504,000
1.13 x 10
1.52 x 10
6
6
55
6
110
12
3600
A
A
A
A
A
A
A
A
A
sec
A
2
sec
A
2
sec
A
2
sec
A
2
sec
A
in. – Lb.
Nm
in. – Lb.
Nm
V
Revision Date: 12/10/2008
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