Datasheet

IRLB8743PbF
www.irf.com 5
Fig 11. Maximum Effective Transient Thermal Impedance, Junction-to-Case
Fig 9. Maximum Drain Current vs.
Case Temperature
Fig 10. Threshold Voltage vs. Temperature
25 50 75 100 125 150 175
T
C
, Case Temperature (°C)
0
20
40
60
80
100
120
140
160
I
D
,
D
r
a
i
n
C
u
r
r
e
n
t
(
A
)
Limited By Package
-75 -50 -25 0 25 50 75 100 125 150 175 200
T
J
, Temperature ( °C )
0.5
1.0
1.5
2.0
2.5
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
= 100µA
I
D
= 250µA
I
D
= 1.0mA
1E-006 1E-005 0.0001 0.001 0.01 0.1
t
1
, Rectangular Pulse Duration (sec)
0.0001
0.001
0.01
0.1
1
10
T
h
e
r
m
a
l
R
e
s
p
o
n
s
e
(
Z
t
h
J
C
)
°
C
/
W
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
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
Ci i/Ri
Ci= τi/Ri
τ
τ
C
τ
4
τ
4
R
4
R
4
Ri (°C/W) τi (sec)
0.85073 0.006515
0.00562 8.246536
0.00099 6.148011
0.25266 0.000371