Powerex, Inc., Hillis Street, Youngwood, Pennsylvania 15697 (724) 925-7272

POW-R-BLOK

TM

Dual SCR Isolated Module

210 Amperes / Up to 2000 Volts

Revision Date: 11/1/2001

ND43__21

CONNECTION DIAGRAM

A

K2

G2

G1

K1

K

AK

SCR 1

SCR 2

M

K

G

A

B

N

R

V

T - M8 THD. (3 TYP.)

U - DIA. (4 TYP.)

OUTLINE DRAWING

A

K

AK

J

C

S

P

Q

F

H

W

L

D E

G2

K2

W

G1

K1

ND43 Outline Dimensions

Dimension

Inches

Millimeters

A

4.57

116

B

3.66

93

C

3.15

80.0

D

2.17

55.1

E

2.06

52.3

F

2.07

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.

V

.110 x .032

2.8 x 0.8

W

.12

3.0

Note: Dimensions are for reference only.

ND43__21

Dual SCR Isolated

POW-R-BLOK

TM

Module

210 Amperes / Up to 2000 Volts

Ordering Information

:

Select the complete eight digit

module part number from the table

below.

Example: ND432021 is a 2000Volt,

210 Ampere Dual SCR Isolated

POW-R-BLOK

Type

Voltage

Volts

(x100)

Current

Amperes

(x 10)

ND43

08

10

12

14

16

18

20

21

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.

POW-R-BLOK

recognized by the Underwriters

Laboratories.

Features:

T Electrically Isolated Heatsinking

T Aluminum Nitride Insulator

T Compression Bonded Elements

T Metal Baseplate

T Low Thermal Impedance

for Improved Current Capability

T Quick Connect Gate Terminal

with Provision for Keyed Mating

Plug

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