SQ1470EH
Automotive N-Channel
30 V (D-S) 175 °C MOSFET
THERMAL RATINGS
(T
A
= 25 °C, unless otherwise noted)
2
1
Normalized
Effective Transient
Thermal Impedance
Duty Cycle = 0.5
0.2
Notes:
0.1
0.1
0.05
0.02
P
DM
t
1
t
2
1. Duty Cycle, D =
t
1
t
2
2. Per Unit Base = R
thJA
= 125 °C/W
Single Pulse
0.01
10
-4
10
-3
10
-2
10
-1
1
Square Wave Pulse Duration (s)
3. T
JM
- T
A
= P
DM
Z
thJA(t)
4. Surface Mounted
10
100
600
Normalized Thermal Transient Impedance, Junction-to-Ambient
2
1
Normalized
Effective Transient
Thermal Impedance
Duty Cycle = 0.5
0.2
0.1
0.1
0.05
0.02
Single Pulse
0.01
10
-4
10
-3
10
-2
10
-1
1
10
Square Wave Pulse Duration (s)
Normalized Thermal Transient Impedance, Junction-to-Foot
Note
• The characteristics shown in the two graphs
- Normalized Transient Thermal Impedance Junction-to-Ambient (25 °C)
- Normalized Transient Thermal Impedance Junction-to-Foot (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.
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