DT
www.daysemi.jp
THERMAL RATINGS
(T
A
= 25 °C, unless otherwise noted)
1
Duty Cycle = 0.5
Normalized Effective Transient
Thermal Impedance
0.2
0.1
0.1
0.05
P
DM
t
1
Notes:
0.02
t
2
1. Duty Cycle, D =
2. Per Unit Base = R
thJA
= 85 °C/W
t
1
t
2
0.01
10
-4
Single
Pulse
10
-3
10
-2
10
-1
1
10
3. T
JM
- T
A
= P
DM
Z
thJA(t)
4.
Surface
Mounted
100
1000
Square
Wave Pulse Duration (s)
Normalized Thermal Transient Impedance, Junction-to-Ambient
1
Duty Cycle = 0.5
Normalized Effective Transient
Thermal Impedance
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.
S11-2109 Rev. B, 31-Oct-11
5
Document Number: 67932
DINTEK [ DinTek Semiconductor Co,.Ltd ]
