Document Number: 69654
S09-2109-Rev. E, 12-Oct-09
www.vishay.com
11
Vishay Siliconix
Si4914BDY
CHANNEL-2 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?69654
.
Normalized Thermal Transient Impedance, Junction-to-Ambient
10
-3
10
-2
1
10
100010
-1
10
-4
100
0.2
0.1
0.05
0.02
Square WavePulse Duration (s)
Normalized Effective Transient
Thermal Impedance
1
0.1
0.01
Single Pulse
t
1
t
2
Notes:
P
DM
1. Duty Cycle, D =
2. Per Unit Base = R
thJA
=115 °C/W
3. T
JM
- T
A
=P
DM
Z
thJA
(t)
t
1
t
2
4. Surface Mounted
Duty Cycle = 0.5
Normalized Thermal Transient Impedance, Junction-to-Foot
10
-3
10
-2
01110
-1
10
-4
0.2
0.1
Duty Cycle = 0.5
Square WavePulse Duration (s)
Normalized Effective Transient
Thermal Impedance
1
0.1
0.01
0.05
0.02
Single Pulse
