Document Number: 73696
S09-2111-Rev. D, 12-Oct-09
www.vishay.com
9
Vishay Siliconix
Si5857DU
SCHOTTKY 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?73696
.
Normalized Thermal Transient Impedance, Junction-to-Ambient
10
-3
10
-2
000101110
-1
10
-4
100
Square Wave Pulse Duration (s)
Normalized Effective Transient
Thermal Impedance
0.02
0.2
0.1
0.05
Single Pulse
Duty Cycle = 0.5
1
0.1
0.01
1. Duty Cycle, D =
2. Per Unit Base = R
thJA
= 93 °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
Normalized Thermal Transient Impedance, Junction-to-Case
10
-3
10
-2
01110
-1
10
-4
1
0.1
0.01
Square Wave Pulse Duration (s)
Normalized Effective
Transient
Thermal Impedance
0.2
0.1
0.05
0.02
Single Pulse
Duty Cycle = 0.5
