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© 2013 International Rectifier

June 10, 2013

Fig 28.

Maximum Effective Transient Thermal Impedance, Junction-to-Case (Q2)

1E-006

1E-005

0.0001

0.001

0.01

0.1

1

10

t1 , Rectangular Pulse Duration (sec)

0.0001

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