Powerex, Inc., 173 Pavilion Lane, Youngwood, Pennsylvania 15697 (724) 925-7272

POW-R-BLOK

TM

www.pwrx.com

Dual SCR/Diode Isolated Module

430 Amperes / Up to 2200 Volts

Revision Date: 03/09/2015

LD42__43

Ordering Information:

Select the complete eight-digit

module part number from the table

below.

Example: LD421843 is a 1800 Volt,

430 Ampere Dual SCR Isolated

POW-R-BLOK

Type

Voltage

Volts

(x100)

Current

Amperes

(x10)

LD42

18

20

22

43

LD42__43

Dual SCR/Diode

POW-R-BLOK

430 Amperes / 1800-2200 Volts

LD42 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.

Description:

Powerex Dual SCR/Diode 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 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

J

F

C

B

A

R

L

H

Q - DIA. (4 TYP.)

P - M10 THD (3 TYP.)

K

D

G

M

N

S

E

T - (2 TYP.)

1

2

3

OUTLINE DRAWING

4

5

CONNECTION DIAGRAM

1

2

4

5

3