IRGPS40B120UD

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9

Fig 25. Normalized Transient Thermal Impedance, Junction-to-Case (DIODE)

Fig 24. Normalized Transient Thermal Impedance, Junction-to-Case (IGBT)

1E-005

0.0001

0.001

0.01

0.1

1

t1 , Rectangular Pulse Duration (sec)

0.01

0.1

1

10

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

1E-005

0.0001

0.001

0.01

0.1

1

10

t1 , Rectangular Pulse Duration (sec)

0.001

0.01

0.1

1

10

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