189NQ150 datasheet(4/5 Pages) IRF

Part #	189NQ150

Description	SCHOTTKY RECTIFIER

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Manufacturer	IRF [International Rectifier]

Direct Link	http://www.irf.com

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4 / 5 page

189NQ... Series

PD-20720 12/99

4

Fig. 5 - Max. Allowable Case Temperature

Vs. Average Forward Current

Fig.8-Unclamped Inductive Test Circuit

Fig. 6 - Forward Power Loss Characteristics

FREE-WHEEL

DIODE

40HFL40S02

C URRENT

MON ITOR

HIGH-SPEED

SWITCH

IRFP460

L

DUT

Rg = 25 ohm

Vd = 25 Volt

+

(2) Formula used: T

C = T J - (Pd + PdREV) x RthJC ;

Pd = Forward Power Loss = I

F(AV)

x V

FM

@ (I

F(AV)

/ D) (see Fig. 6);

Pd

REV = Inverse Power Loss = VR1 x IR (1 - D); IR @ V R1 = rated VR

AverageForwardCurrent-IF

(AV)(A)

AverageForwardCurrent-IF

(AV)(A)

SquareWavePulseDuration-t

p (microsec)

Fig. 7 - Max. Non-Repetitive Surge Current

0

40

80

120

160

200

0

30 60 90 120 150 180 210 240 270

DC

RMS Limit

D = 0.20

D = 0.25

D = 0.33

D = 0.50

D = 0.75

60

80

100

120

140

160

180

0

100

200

300

DC

see note (2)

Square wave (D = 0.50)

Rated V applied

R

1000

10000

100000

10

100

1000

10000

At Any Rated Load Condition

And With Rated V

Applied

Following Surge

RRM

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