Datasheet

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Document Number: 74409
S-83050-Rev. B, 29-Dec-08
Vishay Siliconix
Si7904BDN
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?74409
.
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)
e v i t c e f f E d e z i l a m r
o
N T t n e i s n a r
e c n a d e p m I l a m r e h T
1. Duty Cycle, D =
2. Per Unit Base = R
thJA
= 75 °C/W
3. T
JM
- T
A
= P
DM
Z
thJ A
(t)
t
1
t
2
t
1
t
2
Notes:
4. Surface Mounted
P
DM
Normalized Thermal Transient Impedance, Junction-to-Case
f f
E
d e z i
l a
m
r
o N
t n
e i s n a
r
T
e
v i t c
e
e c n
a d
e p m I
l
a
m
r e
h T
Single Pulse
0.01
0.1
1
Square Wave Pulse Duration (s)
10
-2
10
-1
101 10
-3
Duty Cycle = 0.5
0.2
0.1
0.05
0.02
Single Pulse