IRFR/U2905Z
70
2.0
RDS(on) , Drain-to-Source On Resistance
(Normalized)
LIMITED BY PACKAGE
60
ID , Drain Current (A)
ID = 36A
VGS = 10V
50
40
30
20
10
0
25
50
75
100
125
150
175
T C , Case Temperature (°C)
1.5
1.0
0.5
-60 -40 -20
0
20 40 60 80 100 120 140 160 180
T J , Junction Temperature (°C)
Fig 9.
Maximum Drain Current Vs.
Case Temperature
Fig 10.
Normalized On-Resistance
Vs. Temperature
10
Thermal Response ( Z thJC )
1
D = 0.50
0.20
0.10
0.1
0.05
0.02
0.01
τ
J
R
1
R
1
τ
J
τ
1
τ
2
R
2
R
2
R
3
R
3
τ
3
τ
C
τ
τ
3
τ
1
τ
2
Ri (°C/W)
τi
(sec)
0.3962 0.00012
0.5693 0.00045
0.4129
0.0015
0.01
SINGLE PULSE
( THERMAL RESPONSE )
0.001
1E-006
1E-005
0.0001
Ci=
τi/Ri
Ci i/Ri
Notes:
1. Duty Factor D = t1/t2
2. Peak Tj = P dm x Zthjc + Tc
0.01
0.1
0.001
t1 , Rectangular Pulse Duration (sec)
Fig 11.
Maximum Effective Transient Thermal Impedance, Junction-to-Case
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KERSEMI [ Kersemi Electronic Co., Ltd. ]
