Datasheet

IRF7842PbF
www.irf.com 5
Fig 11. Maximum Effective Transient Thermal Impedance, Junction-to-Ambient
Fig 9. Maximum Drain Current Vs.
Case Temperature
Fig 10. Threshold Voltage Vs. Temperature
25 50 75 100 125 150
T
J
, Junction Temperature (°C)
0
2
4
6
8
10
12
14
16
18
I
D
,
D
r
a
i
n
C
u
r
r
e
n
t
(
A
)
-75 -50 -25 0 25 50 75 100 125 150
T
J
, Temperature ( °C )
0.4
0.8
1.2
1.6
2.0
2.4
V
G
S
(
t
h
)
G
a
t
e
t
h
r
e
s
h
o
l
d
V
o
l
t
a
g
e
(
V
)
I
D
= 250µA
1E-006 1E-005 0.0001 0.001 0.01 0.1 1 10 100
t
1
, Rectangular Pulse Duration (sec)
0.0001
0.001
0.01
0.1
1
10
100
T
h
e
r
m
a
l
R
e
s
p
o
n
s
e
(
Z
t
h
J
A
)
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 Zthja + Tc
Ri (°C/W) τi (sec)
10.48 0.138167
26.83 1.8582
12.69 44.8
τ
J
τ
J
τ
1
τ
1
τ
2
τ
2
τ
3
τ
3
R
1
R
1
R
2
R
2
R
3
R
3
τ
τ
C
Ci= i/Ri
Ci= τi/Ri