SQJ560EP
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Vishay Siliconix
S18-0386-Rev. A, 09-Apr-18
6
Document Number: 76266
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N-CHANNEL 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
10
-3
10
-2
1
1
0
600
10
-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
= 85 °C/W
3. T
JM
- T
A
= P
DM
Z
th
JA
(t
)
t
1
t
2
t
1
t
2
Notes:
4. Surface mounted
P
DM
10
100
1000
10000
0.001
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
