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STD45NF75 Datasheet(PDF) 6 Page - STMicroelectronics

Part # STD45NF75
Description  N-CHANNEL 75V - 0.018 OHM -40A DPAK STripFETTMII POWER MOSFET
PDF  12 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STD45NF75 Datasheet(HTML) 6 Page - STMicroelectronics

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STD45NF75
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Thermal Resistance Rthj-a vs PCB Copper Area
Allowable Iav vs. Time in Avalanche
Max Power Dissipation vs PCB Copper Area
The previous curve gives the safe operating area for unclamped inductive loads, single pulse or repetitive,
under the following conditions:
PD(AVE) = 0.5 * (1.3 * BVDSS * IAV)
EAS(AR) = PD(AVE) * tAV
Where:
IAV is the Allowable Current in Avalanche
PD(AVE) is the Average Power Dissipation in Avalanche (Single Pulse)
tAV is the Time in Avalanche
To derate above 25 oC, at fixed IAV, the following equation must be applied:
IAV = 2 * (Tjmax - TCASE)/ (1.3 * BVDSS * Zth)
Where:
Zth = K * Rth is the value coming from Normalized Thermal Response at fixed pulse width equal to TAV .



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