Si8429DB
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Vishay Siliconix
S15-1692-Rev. E, 20-Jul-15
5
Document Number: 74399
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TYPICAL CHARACTERISTICS (25 °C, unless otherwise noted)
Current Derating
a
Note
a. The power dissipation P
D
is based on T
J
(max.) = 150 °C, using
junction-to-case thermal resistance, and is more useful in
settling the upper dissipation limit for cases where additional
heatsinking is used. It is used to determine the current rating,
when this rating falls below the package limit.
Normalized Thermal Transient Impedance, Junction-to-Ambient
Normalized Thermal Transient Impedance, Junction-to-Foot
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Technology and Package Reliability represent a composite of all qualified locations. For related documents such as package/tape drawings, part marking, and
reliability data, see www.vishay.com/ppg?74399
.
0
2
4
6
8
10
12
25 50 75 100 125 150
I
D
- Drain Current (A)
T
F
- Foot Temperature (°C)
10
-3
10
-2
60001110
-1
10
-4
100
2
1
0.1
0.01
0.2
0.1
0.05
0.02
Single Pulse
Duty Cycle = 0.5
Square Wave Pulse Duration (s)
Normalized Effective Transient
Thermal Impedance
1. Duty Cycle, D =
2. Per Unit Base = R
thJA
= 72 °C/W
3. T
JM
- T
A
= P
DM
Z
thJA
(t)
t
1
t
2
t
1
t
2
Notes:
4. Surface Mounted
P
DM
10
-3
10
-2
01110
-1
10
-4
2
1
0.1
0.01
0.2
0.1
0.05
0.02
Single Pulse
Duty Cycle = 0.5
Square Wave Pulse Duration (s)
Normalized Effective Transient
Thermal Impedance
