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

POW-R-BLOK

TM

Dual SCR/Diode Isolated Module

250 Amperes / Up to 1600 Volts

Revision Date: 12/04/2002

ND47__25

Maximum On-State Forward Voltage Drop

0.00

1.00

2.00

3.00

4.00

5.00

10

100

1000

10000

Instantaneous On-State Current - Itm/Ifm - Amperes

( Tj = 130 °C )

Maximum Transient Thermal Impedance

0

0.02

0.04

0.06

0.08

0.1

0.12

0.14

0.001

0.01

0.1

1

10

100

Time - t - Seconds

(Junction to Case, Per Junction)

0

180

360

CONDUCTION ANGLE

M ax im u m O n -S tate P o w er D is sip atio n

15°

30°

60°

90°

120°

180°

0

50

100

150

200

250

300

0

50

100

150

200

250

300

Av erag e O n -S tate C u rren t - It / If (av ) - A m p eres

(S inusoidal W av efo rm )

0

180

360

CONDUCTION ANGLE

Maximum Allowable Case Temperature

120°

90°

60°

30°

15°

180°

80

85

90

95

100

105

110

115

120

125

130

0

50

100

150

200

250

300

Average On-State Current - It / If (av) - Am peres

(Sinusoidal Waveform)

0

180

360

CONDUCTION ANGLE

Maximum On-State Power Dissipation

90°

60°

30°

120°

180°

270°

15°

360°

0

50

100

150

200

250

300

350

400

0

50

100

150

200

250

300

350

400

450

Average On-State Current - It / If (av) - Amperes

(Rectangular Waveform)

0

180

360

CONDUCTION ANGLE

Maximum Allow able Case Temperature

270°

180°

120°

90°

60°

30°

15°

360°

70

80

90

100

110

120

130

0

100

200

300

400

500

Average On-State Current - It / If (av) - Amperes

(Rectangular W aveform)