203DMQ080 datasheet(4/5 Pages) IRF

4 / 5 page

203DMQ... Series

Bulletin PD-20579 04/00

www.irf.com

Fig.7-Max. Non-Repetitive Surge Current (PerLeg)

Fig.5-Max. Allowable CaseTemperature

Vs. Average Forward Current (PerLeg)

Fig. 8 - Unclamped Inductive Test Circuit

Fig.6-Forward Power Loss Characteristics

(PerLeg)

FR EE-W H EEL

D IO D E

40 HFL4 0 S02

C U RRE N T

MO N IT O R

HIG H - SP E E D

SW IT C H

IRFP4 60

DU T

Rg = 25 ohm

Vd = 2 5 Vo lt

(2) Formula used: T

= T

- (Pd + Pd

REV

) x R

thJC

;

Pd = Forward Power Loss = I

F(AV) x VFM @ (IF(AV) / D)

(see Fig. 6);

REV

= Inverse Power Loss = V

x I

(1 - D); I

@ V

= 80% rated V

AverageForwardCurrent-I

F(AV)

(A)

Average Forward Current - I

F(AV)

(A)

Square Wave Pulse Duration - t

p (microsec)

100

150

200

250

100

150

200

250

300

RMS Limit

D = 0.75

D = 0.50

D = 0.33

D = 0.25

D = 0.20

1000

10000

100000

100

1000

10000

At Any Rated Load Condition

And With Rated Vrrm Applied

Following Surge

100

120

140

160

180

100

150

200

250

300

80% Square Wave

(D = 0.50)

see note (2)

203DMQ080 Datasheet(PDF) 4 Page - International Rectifier

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