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Document Number: 68924
S-82485-Rev. A, 13-Oct-08
Vishay Siliconix
Si4804CDY
New Product
TYPICAL CHARACTERISTICS 25 °C, unless otherwise noted
Vishay Siliconix maintains worldwide manufacturing capability. Products may be manufactured at one of several qualified locations. Reliability data for Silicon
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 http://www.vishay.com/ppg?68924.
Normalized Thermal Transient Impedance, Junction-to-Ambient
10
-3
10
-2
1
10
100010
-1
10
-4
100
0.2
0.1
0.05
Square WavePulse Duration (s)
Normalized Effective Transient
Thermal Impedance
1
0.1
0.01
Single Pulse
t
1
t
2
Notes:
P
DM
1. Duty Cycle, D =
2. Per Unit Base = R
thJA
=120 °C
3. T
JM
-- T
A
=P
DM
Z
thJA
(t)
t
1
t
2
4. Surface Mounted
Duty Cycle = 0.5
0.02
Normalized Thermal Transient Impedance, Junction-to-Foot
10
-3
10
-2
01110
-1
10
-4
0.2
0.1
Duty Cycle = 0.5
Square WavePulse Duration (s)
Normalized Effective Transient
Thermal Impedance
1
0.1
0.01
Single Pulse
0.02
0.05