Datasheet

Si8487DB
www.vishay.com
Vishay Siliconix
S14-2452-Rev. D, 08-Dec-14
6
Document Number: 63483
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TYPICAL CHARACTERISTICS (25 °C, unless otherwise noted)
Normalized Thermal Transient Impedance, Junction-to-Ambient (1" x 1" FR4 Board with Full Copper)
Normalized Thermal Transient Impedance, Junction-to-Ambient (1" x 1" FR4 Board with Minimum Copper)
10
-3
10
-2
00601110
-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
thJA
(t)
t
1
t
2
t
1
t
2
Notes:
4. Surface Mounted
P
DM
10
-3
10
-2
000101110
-1
100
0.2
0.1
0.05
0.02
Square Wave Pulse Duration (s)
Normalized Effective Transient
Thermal Impedance
1
0.1
0.01
Duty Cycle = 0.5
t
1
t
2
Notes:
P
DM
1. Duty Cycle, D =
2. Per Unit Base = R
thJA
= 175 °C/W
3. T
JM
- T
A
=P
DM
Z
thJA
(t)
t
1
t
2
4. Surface Mounted
Single Pulse