PRELIMINARY
Powerex, Inc., 173 Pavilion Lane, Youngwood, Pennsylvania 15697 (724) 925-7272
www.pwrx.com
LDR3__50
POW-R-BLOK
TM
Dual SCR Isolated Module
500 Amperes / Up to 1800 Volts
OUTLINE DRAWING
LDR3__50
Dual SCR
POW-R-BLOK
TM
Module
500 Amperes / 800-1800 Volts
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.
TM
POW-R-BLOK
has been tested and
recognized by the Underwriters
Laboratories.
Features:
Ordering Information:
Select the complete eight-digit
module part number from the table
below.
Example: LDR31650 is a 1600V,
500 Ampere Dual SCR Isolated
TM
POW-R-BLOK
Module.
LDR3 Outline Dimensions
Dimension
A
B
C
D
E
Inches
5.87
4.88
4.41
2.36
2.05
1.97
1.89
1.73
1.22
1.10
1.02
0.67
0.39
M10 Metric
0.26 Dia.
0.20
0.12
.110 x .032
Millimeters
149
124
112
60
52
50
48
44
31
28
26
17
10
M10
6.5 Dia.
5
3
2.8 x 0.8
Electrically Isolated Heatsinking
Compression Bonded Elements
Metal Baseplate
Low Thermal Impedance
for Improved Current Capability
Includes Gate Lead Kits and
M10 Terminal Hardware
UL Recognition Pending
RoHS Compliant
Type
LDR3
Voltage
Volts
(x100)
08
10
12
14
16
18
Current
Amperes
(x10)
50
F
G
H
J
K
L
M
N
P
Q
R
S
T
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
Note: Dimensions are for reference only.
Revision Date: 7/21/2017
PRELIMINARY
Powerex, Inc., 173 Pavilion Lane, Youngwood, Pennsylvania 15697 (724) 925-7272
www.pwrx.com
LDR3__50
POW-R-BLOK
TM
Dual SCR Isolated Module
500 Amperes / Up to 1800 Volts
Absolute Maximum Ratings
Characteristics
Repetitive Peak Forward and Reverse Blocking
Voltage
Non-Repetitive Peak Blocking Voltage
(t < 5 msec)
RMS Forward Current
Average Forward Current
Peak One Cycle Surge Current, Non-Repetitive
Conditions
Symbol
V
DRM
& V
RRM
V
RSM
180° Conduction, T
C
=85°C, 50 Hz
180° Conduction, T
C
=85°C, 50 Hz
60 Hz, 0V reapplied, T
j
= T
j max
60 Hz, 0V reapplied, T
j
= 25 °C
50 Hz, 0V reapplied T
j
= T
j max
50 Hz, 0V reapplied, T
j
= 25 °C
I t for Fusing for One Cycle
2
Units
up to 1800
V
RRM
+ 100
785
500
17,000
20,000
15,500
18,000
1.19 x 10
1.66 x 10
1.20 x 10
1.62 x 10
4
400
6
6
6
6
2
2
2
2
V
V
A
A
A
A
A
A
A sec
A sec
A sec
A sec
W
A/µs
I
T(RMS)
I
T(AV)
I
TSM
I
TSM
I
TSM
I
TSM
It
It
It
It
P
G(AV)
di/dt
2
2
2
2
60 Hz, 0V reapplied, T
j
= T
j max
60 Hz, 0V reapplied, T
j
= 25 °C
50 Hz, 0V reapplied T
j
= T
j max
50 Hz, 0V reapplied, T
j
= 25 °C
Average Forward Gate Power
Maximum Rate-of-Rise of On-State Current,
(Repetitive)
T= T
j max
, V
D
= 0.67 V
DRM
,
I
TM
= 2 I
TAV
,
Gate Pulse: I
G
= 2 A, t
GP
= 50 µs,
di
G
/dt>= 1 A/µs
Operating Temperature
Storage Temperature
Max. Mounting Torque, M6 Mounting Screw
Max. Mounting Torque, M10 Terminal Screw
Module Weight, Typical
V Isolation @ 25C
t= 1 minute, 50 Hz
T
J
T
stg
-40 to +130
-40 to +125
55
6
110
12
1.5
3.30
°C
°C
in. – Lb.
Nm
in. – Lb.
Nm
kg
lb
V
V
rms
3000
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.
Revision Date: 7/21/2017
PRELIMINARY
Powerex, Inc., 173 Pavilion Lane, Youngwood, Pennsylvania 15697 (724) 925-7272
www.pwrx.com
LDR3__50
POW-R-BLOK
TM
Dual SCR Isolated Module
500 Amperes / Up to 1800 Volts
Electrical Characteristics, T
J
=25°C unless otherwise specified
Characteristics
Repetitive Peak Forward Leakage Current
Repetitive Peak Reverse Leakage Current
Peak On-State Voltage
Threshold Voltage, Low-level
Slope Resistance, Low-level
V
TM
Coefficients, Full Range
Symbol
I
DRM
I
RRM
V
FM
V
(TO)1
r
T1
Test Conditions
V
D
= V
DRM
, , T
J
=130°C
V
R
= V
RRM
, T
J
=130°C
I
TM
=1570A
T
J
= 130°C, I = 0.5
πI
T(AV)
to 1.5
πI
T(AV)
T
J
= 130°C, I = 0.5
πI
T(AV)
to 1.5
πI
T(AV)
V
TM
= A+ B Ln I +C I + D Sqrt I
Critical Rate of Rise of Off-State Voltage
Gate Trigger Current
Gate Trigger Voltage
Non-Triggering Gate Voltage
Peak Forward Gate Current
Peak Reverse Gate Voltage
Latching Current
dV/dt
I
GT
V
GT
V
GDM
I
GTM
V
GRM
I
L
T
j
= 25 °C, V
D
= 12 V,
Gate Pulse: I
G
= 2 A, t
GP
= 50 µs, di
G
/dt>=
1 A/µs
Holding Current
Turn-Off Time
I
H
t
q
T
j
= 25 °C, V
D
= 0.67 V
DRM
, Gate Open
Itm=I
TAV
, dI/dt=10 A/us, dV
D
/dt=50 V/us,
o
V
D
=0.67 Vdrm, V
R
= 100 V, Tj=130 C
300
250
mA
µs
V
D
= 0.67 V
DRM ,
T
j
=130°C, Gate Open
T
j
=25°C, V
D
=12V
T
j
=25°C, V
D
=12V
T
j
=130°C, V
D
= 0.67 V
DRM
A=
B=
C=
D=
Min.
Max.
70
70
1.50
0.85
0.40
-2.5548
0.8017
9.55E-04
-0.0851
1000
250
2.5
0.25
4.0
5
1000
V/µs
mA
V
V
A
V
mA
Units
mA
mA
V
V
mΩ
Thermal Characteristics
Characteristics
Thermal Resistance, Junction to Case
Thermal Impedance Coefficients
Symbol
R
ΘJ-C
Z
Θ
J-C
Per Module, both conducting
Per Junction, both conducting
Z
Θ
J-C
= K
1
(1-exp(-t/
1
))
+ K
2
(1-exp(-t/
2
))
+ K
3
(1-exp(-t/
3
))
Thermal Resistance, Case to Sink Lubricated
R
ΘC-S
+ K
4
(1-exp(-t/
4
))
Per Module
K
1
= 7.42E-04
K
2
= 9.52E-04
K
3
= 1.02E-02
K
4
= 5.23E-02
Max.
0.0325
0.0650
1
= 3.33E-04
2
= 4.74E-03
3
= 9.60E-02
4
= 1.719
0.01
°C/W
Units
°C/W
°C/W
Revision Date: 7/21/2017
PRELIMINARY
Powerex, Inc., 173 Pavilion Lane, Youngwood, Pennsylvania 15697 (724) 925-7272
www.pwrx.com
LDR3__50
POW-R-BLOK
TM
Dual SCR Isolated Module
500 Amperes / Up to 1800 Volts
Maximum On-State Forward Voltage Drop
( Tj = 130 °C )
5
Maximum Transient Thermal Impedance
(Junction to Case)
0.07
On-State Voltage - Vtm - Volts
4
Thermal Impedance - Rjc - °C/W
0.06
0.05
3
0.04
2
0.03
0.02
1
0.01
0
100
1000
10000
100000
0
0.001
0.01
0.1
1
10
100
Instantaneous On-State Current - Itm - Amperes
Time - t - Seconds
Maximum On-State Power Dissipation
(Sinusoidal Waveform)
800
Maximum Allowable Case Temperature
(Sinusoidal Waveform)
140
180°
Maximum Power Dissipation Per SCR - Watts
700
120°
600
500
30°
400
300
200
100
0
0
100
200
300
400
500
15°
60°
90°
Max. Case Temperature - Tcase - °C
130
120
110
100
15°
30°
60°
90°
120°
180°
90
80
600
70
0
100
200
300
400
500
600
Average On-State Current - It(av) - Amperes
Average On-State Current - If(av) - Amperes
Maximum On-State Power Dissipation
(Rectangular Waveform)
1000
140
360°
130
Maximum Allowable Case Temperature
(Rectangular Waveform)
Maximum Power Dissipation Per SCR - Watts
900
270°
800
180°
700
120°
600
500
400
300
200
100
0
0
100
200
300
400
500
600
700
15°
30°
90°
60°
Max. Case Temperature - Tcase - °C
120
110
100
15°
90
80
70
60
50
30°
60°
90°
120°
180°
270°
360° (DC)
800
900
0
100
200
300
400
500
600
700
800
900
Average On-State Current - It(av) - Amperes
Average On-State Current - It(av) - Amperes
Revision Date: 7/21/2017
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