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SI4974DY Datasheet, PDF (5/9 Pages) Vishay Siliconix – Dual N-Channel 30-V (D-S) MOSFET
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CHANNEL-1 TYPICAL CHARACTERISTICS 25 °C, unless otherwise noted
2
1
Duty Cycle = 0.5
Si4974DY
Vishay Siliconix
0.2
0.1
0.1
0.05
0.02
0.01
10-4
Notes:
PDM
Single Pulse
t1
t2
1. Duty Cycle, D =
t1
t2
2. Per Unit Base = R thJA = 90 °C/W
3. TJM - TA = PDMZthJA(t)
4. Surface Mounted
10-3
10-2
10-1
1
10
100
600
Square Wave Pulse Duration (s)
Normalized Thermal Transient Impedance, Junction-to-Ambient
2
1
Duty Cycle = 0.5
0.2
0.1
0.1
0.05
0.02
Single Pulse
0.01
10-4
10-3
10-2
10-1
1
10
Square Wave Pulse Duration (s)
Normalized Thermal Transient Impedance, Junction-to-Foot
Document Number: 73052
S09-0228-Rev. D, 09-Feb-09
www.vishay.com
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