Fairchild FDD8447L Specifications Manual
Summary
This robust N-Channel MOSFET is designed with PowerTrench technology for superior switching performance in demanding applications. The manual provides comprehensive technical specifications, detailing operational limits, low $R_{DS(on)}$, and dynamic characteristics crucial for accurate design implementation. It is essential documentation for electrical engineers building reliable power supplies and high-efficiency inverters requiring dependable solid-state switching capabilities.
Page 1 Text Content
FD 8447L 40V N -C hannel Pow er Trench FET
May 2008
FDD8447L 40V N-Channel Power Trench® MOSFET 40V, 50A, 8.5mΩ Features General Description Max r DS(on) = 8.5mΩ at VGS = 10V, ID = 14A This N-Channel MOSFET has been produced using Fairchild
Semiconductor’s proprietary Power Trench® technology to
Max r DS(on) = 11.0mΩ at VGS = 4.5V, ID = 11A
deliver low r DS(on) and optimized BVDSS capability to offer
Fast Switching superior performance benefit in the application.
Ro HS Compliant
Applications Inverter Power Supplies
TO -252D-PAK (TO-252)
MOSFET Maximum Ratings TC = 25°C unless otherwise noted Symbol Parameter Ratings Units VDS Drain to Source Voltage
VGS Gate to Source Voltage ±20 Drain Current -Continuous (Package limited) TC= 25°C -Continuous (Silicon limited) TC= 25°C 57
-Continuous TA= 25°C (Note 1a) 15.2 -Pulsed 100 IS Max Pulse Diode Current EAS Drain-Source Avalanche Energy (Note 3) m J Power Dissipation TC= 25°C 44
PD W TA= 25°C (Note 1a) 3.1
TA= 25°C (Note 1b) 1.3
TJ, TSTG Operating and Storage Junction Temperature Range -55 to +150 °C
Thermal Characteristics
RθJC Thermal Resistance, Junction to Case 2.8
Thermal Resistance, Junction to Ambient (Note 1a) °C/WRθJA
RθJA Thermal Resistance, Junction to Ambient (Note 1b) 96
Package Marking and Ordering Information Device Marking Device Package Reel Size Tape Width Quantity FDD8447L FDD8447L D-PAK(TO-252) 13’’ 12mm 2500 units
©20 08 Fairchild Semiconductor Corporation www.fairchildsemi.com1 FD D8447L Rev.C3
Page Summary Contents For Fairchild FDD8447L Specifications Manual
Manual Details
| Brand | Fairchild |
|---|---|
| Pages | 6 |
| File Size | 513.77 KB |
| Published | July 10, 2026 |
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Frequently Asked Questions
What are the key electrical specifications of this MOSFET?
It has a 40V drain-to-source voltage, a continuous drain current up to 50A (Silicon limited), and an on-resistance (r) that maxes out at 8.5mΩ.
What types of applications is the device designed for?
It is suitable for use in Inverters and Power Supplies.
How safe is this component to handle extreme heat changes?
The operating junction temperature range is wide, spanning from -55°C to +150°C.
What are the thermal characteristics when mounted on a copper pad?
Its R (Thermal Resistance), Junction to Ambient is 40 °C/W when mounted on a 1 in² pad of 2 oz copper.