IRFS/SL4115PbF

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5

Fig. 13 Maximum Effective Transient Thermal Impedance, Junction-to-Case

1E-006

1E-005

0.0001

0.001

0.01

0.1

t1 , Rectangular Pulse Duration (sec)

0.0001

0.001

0.01

0.1

1

0.20

0.10

D = 0.50

0.02

0.01

0.05

SINGLE PULSE

( THERMAL RESPONSE )

Notes:

1. Duty Factor D = t1/t2

2. Peak Tj = P dm x Zthjc + Tc

Ri (°C/W)

τi (sec)

0.245

0.0059149

0.155

0.0006322

τ

J

τ

J

τ

1

τ

1

τ

2

τ

2

R

1

R

1

R

2

R

2

τ

C

τ

C

Ci =

τi/Ri

Ci=

τi/Ri

0

200

400

600

800

1000

diF /dt (A/μs)

0

10

20

30

40

50

IF = 42A

VR = 130V

TJ = 25°C

TJ = 125°C

0

200

400

600

800

1000

diF /dt (A/μs)

0

10

20

30

40

50

IF = 62A

VR = 130V

TJ = 25°C

TJ = 125°C

0

200

400

600

800

1000

diF /dt (A/μs)

0

500

1000

1500

2000

2500

IF = 42A

VR = 130V

TJ = 25°C

TJ = 125°C

0

200

400

600

800

1000

diF /dt (A/μs)

0

600

1200

1800

2400

3000

IF = 62A

VR = 130V

TJ = 25°C

TJ = 125°C