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SI4953DY Datasheet, PDF (2/6 Pages) Fairchild Semiconductor – Dual P-Channel Enhancement Mode MOSFET | |||
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Notes:
1. RθJA is the sum of the junction-to-case and case-to-ambient resistance where the case thermal reference is defined as the solder mounting surface of
the drain pins. RθJC is guaranteed by design while RθCA is determined by the user's board design.
a) 78° C/W when
mounted on a 0.5 in2
pad of 2 oz. copper.
Scale 1 : 1 on letter size paper
2. Pulse Test: Pulse Width ⤠300 µs, Duty Cycle ⤠2.0%
b) 125° C/W when
mounted on a 0.02 in2
pad of 2 oz. copper.
c) 135° C/W when
mounted on a minimum
pad of 2 oz. copper.
Si4953DY Rev. A
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