Document Number: 73624
S09-0393-Rev. B, 09-Mar-09
www.vishay.com
11
Vishay Siliconix
Si4559ADY
P-CHANNEL TYPICAL CHARACTERISTICS 25 °C, unless otherwise noted
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?73624
.
Normalized Thermal Transient Impedance, Junction-to-Ambient
10
-3
10
-2
1 1 0 60010
-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 Ef fective T ransient
Thermal Impedance
1. Duty Cycle, D =
2. Per Unit Base = R
th J A
= 85 °C/W
3. T
JM
- T
A
= P
DM
Z
th J A
(t )
t
1
t
2
t
1
t
2
Notes:
4. Surface Mounted
P
DM
Normalized Thermal Transient Impedance, Junction-to-Foot
10
-3
10
-2
11010
-1
10
-4
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
