70CRU04 datasheet(4/6 Pages) IRF

Part #	70CRU04

Description	Ultrafast Rectifier

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Manufacturer	IRF [International Rectifier]

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70CRU04

Bulletin PD-20637 12/01

4

www.irf.com

Fig. 5 - Max. Allowable Case Temperature

Vs. Average Forward Current

Fig. 8 - Typical Stored Charge vs. di F /dt

Fig. 6 - Forward Power Loss Characteristics

(3) Formula used: T

C = TJ - (Pd + PdREV) x RthJC ;

Pd = Forward Power Loss = I

F(AV) x VFM @ (IF(AV) / D) (see Fig. 6);

Pd

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

Average Forward Current - I

F(AV) (A)

Fig. 7 - Typical Reverse Recovery vs. di F /dt

di F/dt (A/µs )

di F /dt (A/µs )

Average Forward Current - I

F(AV) (A)

100

110

120

130

140

150

160

170

180

0

5

10

15

20

25

30

35

40

DC

Square wave (D = 0.50)

Rated Vr applied

see note (3)

0

5

10

15

20

25

30

35

40

0

5

10

15

20

25

30

35

RMS Limit

D = 0.01

D = 0.02

D = 0.05

D = 0.10

D = 0.20

D = 0.50

DC

50

60

70

80

90

100

110

120

130

140

150

100

1000

Tj = 125˚C

Tj = 25˚C

If = 35A

Vrr = 200V

0

500

1000

1500

2000

2500

100

1000

Tj = 125˚C

Tj = 25˚C

If = 35A

Vrr = 200V

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