New Product
SiR494DP
Vishay Siliconix
TYPICAL CHARACTERISTICS 25 °C, unless otherwise noted
250
200
150
100
Package Limited
50
0
0
25
50
75
100
125
150
T C - Case Temperat u re (°C)
Current Derating*
125
100
75
50
25
0
3.0
2.4
1. 8
1.2
0.6
0.0
0
25
50
75
100
125
150
0
25
50
75
100
125
150
T C - Case Temperat u re (°C)
Power, Junction-to-Case
T A - Ambient Temperature (°C)
Power, Junction-to-Ambient
* The power dissipation P D is based on T J(max) = 150 °C, using junction-to-case thermal resistance, and is more useful in settling the upper
dissipation limit for cases where additional heatsinking is used. It is used to determine the current rating, when this rating falls below the package
limit.
Document Number: 64824
S09-0874-Rev. A, 18-May-09
www.vishay.com
5
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