5

www.irf.com © 2014 International Rectifier

Submit Datasheet Feedback

January 23, 2014

 

IRLS3813PbF

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

Fig 14. Single Avalanche Current vs. pulse Width

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

1.0E-06

1.0E-05

1.0E-04

1.0E-03

1.0E-02

1.0E-01

tav (sec)

1

10

100

1000

Allowed avalanche Current vs avalanche

pulsewidth, tav, assuming

 j = 25°C and

Tstart = 125°C.

Allowed avalanche Current vs avalanche

pulsewidth, tav, assuming

Tj = 125°C and

Tstart =25°C (Single Pulse)