SiRA84DP
www.vishay.com
Vishay Siliconix
S17-0222-Rev. A, 13-Feb-17
6
Document Number: 75258
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TYPICAL CHARACTERISTICS (25 °C, unless otherwise noted)
Normalized Thermal Transient Impedance, Junction-to-Ambient
Normalized Thermal Transient Impedance, Junction-to-Case
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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?75258
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10
100
1000
10000
0.01
0.1
1
0.0001 0.001 0.01 0.1 1 10 100 1000
Axis Title
1st line
2nd line
Normalized Effective Transient
Thermal Impedance
Square Wave Pulse Duration (s)
2nd line
0.1
0.05
0.02
Single pulse
Duty Cycle = 0.5
0.2
P
DM
t
1
t
2
1. Duty cycle, D =
2. Per unit base = R
thJA
= 70 °C/W
3. T
JM
-T
A
= P
DM
Z
thJA
(t)
4. Surface mounted
t
1
t
2
Notes:
10
100
1000
10000
0.01
0.1
1
0.0001 0.001 0.01 0.1 1 10
Axis Title
1st line
2nd line
Normalized Effective Transient
Thermal Impedance
Square Wave Pulse Duration (s)
2nd line
0.1
0.05
0.02
Single pulse
Duty Cycle = 0.5
0.2
