SQJA72EP
www.vishay.com
Vishay Siliconix
S17-1600-Rev. A, 23-Oct-17
5
Document Number: 75531
For technical questions, contact: automostechsupport@vishay.com
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ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000
TYPICAL CHARACTERISTICS (T
A
= 25 °C, unless otherwise noted)
Normalized Thermal Transient Impedance, Junction-to-Ambient
Normalized Thermal Transient Impedance, Junction-to-Case
Note
• The characteristics shown in the two graphs
- Normalized Transient Thermal Impedance Junction-to-Ambient (25 °C)
- Normalized Transient Thermal Impedance Junction-to-Case (25 °C)
are given for general guidelines only to enable the user to get a “ball park” indication of part capabilities. The data are extracted from single
pulse transient thermal impedance characteristics which are developed from empirical measurements. The latter is valid for the part
mounted on printed circuit board - FR4, size 1" x 1" x 0.062", double sided with 2 oz. copper, 100 % on both sides. The part capabilities
can widely vary depending on actual application parameters and operating conditions
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 www.vishay.com/ppg?75531
.
0.01
0.1
1
0.0001 0.001 0.01 0.1 1 10 100 1000
Normalized Effective Transient
Thermal Impedance
Square Wave Pulse Duration (s)
Duty Cycle = 0.5
0.2
0.1
0.05
0.02
Single Pulse
t
1
t
2
Notes:
P
DM
1. Duty Cycle, D =
2. Per Unit Base = R
thJA
=70°C/W
3. T
JM
-T
A
=P
DM
Z
thJA
(t)
t
1
t
2
4. Surface Mounted
10
100
1000
10000
0.01
0.1
1
0.0001 0.001 0.01 0.1 1
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
