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Document Number: 73685
S09-0138-Rev. C, 02-Feb-09
Vishay Siliconix
Si4630DY
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?73685
.
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 Wave Pulse Duration (s)
t n e i s n a r T e v i t c e
E d e z i l a m r o N
e c n a d e p m I l a m r e h T
1
0.1
0.01
Single Pulse
t
1
t
2
Notes:
P
DM
1. Duty Cycle, D =
2. Per Unit Base = R
thJA
= 60 °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-Case
0.1
0.2
Duty Cycle = 0.5
Square Wave Pulse Duration (s)
t n e i s n a r T e v
i
t c e
E d e
z
i l a m r o N
e c n a d e p m I
l a
m r e
h T
1
0.1
0.01
0.0001
0.001
0.01
0.1
1
Single Pulse
0.02
10
0.05