Fairchild FDD3682 Product Specifications Manual
Summary
The FDD3682 is a high-performance N-Channel PowerTrench MOSFET engineered for demanding automotive applications, rated up to 100V and 32A. Ideal for critical power management systems, it serves as a reliable primary switch in DC/DC converters, Off-Line UPS, and Distributed Power Architectures. This manual provides comprehensive technical specifications, including detailed electrical characteristics, dynamic switching analyses, and thermal derating curves, ensuring users can select the perfect component for rigorous applications compliant with AEC Q101 standards.
Page 1 Text Content
September 2002
FDD3682 N-Channel Power Trench® MOSFET 100V, 32A, 36mΩ Features Applications r DS(ON) = 32mΩ (Typ.), VGS = 10V, ID = 32A DC/DC converters and Off-Line UPS Qg(tot) = 18.5n C (Typ.), VGS = 10V
Distributed Power Architectures and VRMs
Low Miller Charge
Primary Switch for 24V and 48V Systems
Low QRR Body Diode
High Voltage Synchronous Rectifier
UIS Capability (Single Pulse and Repetitive Pulse)
Direct Injection / Diesel Injection System
Qualified to AEC Q101
Formerly developmental type 82755 42V Automotive Load Control
Electronic Valve Train System
DRAIN (FLANGE)
SOURCE
TO-252AA FDD SERIES
MOSFET Maximum Ratings TC = 25°C unless otherwise noted Symbol Parameter Ratings Units VDSS Drain to Source Voltage VGS Gate to Source Voltage ±20
Drain Current
AContinuous (TC = 25o C, VGS = 10V)
ID Continuous (TC = 100o C, VGS = 10V)
Continuous (Tamb = 25o C, VGS = 10V, RθJA = 52o C/W) 5.5 Pulsed Figure 4
EAS Single Pulse Avalanche Energy (Note 1) m J
Power dissipation
Derate above 25o C 0.63 W/o C
TJ, TSTG Operating and Storage Temperature -55 to 175
Thermal Characteristics
RθJC Thermal Resistance Junction to Case TO-252 1.58
RθJA Thermal Resistance Junction to Ambient TO-252
RθJA Thermal Resistance Junction to Ambient TO-252, 1in2 copper pad area
This product has been designed to meet the extreme test conditions and environment demanded by the automotive industry. For a
copy of the requirements, see AEC Q101 at: http://www.aecouncil.com/
Reliability data can be found at: http://www.fairchildsemi.com/products/discrete/reliability/index.html.
All Fairchild Semiconductor products are manufactured, assembled and tested under ISO9000 and QS9000 quality systems
certification.
2002 Fairchild Semiconductor Corporation FDD3682 Rev. B
Page Summary Contents For Fairchild FDD3682 Product Specifications Manual
Manual Details
| Brand | Fairchild |
|---|---|
| Pages | 11 |
| File Size | 266.98 KB |
| Published | July 06, 2026 |
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Frequently Asked Questions
What is the maximum continuous drain current?
The continuous drain current (I_D) is rated at 32A.
Can this MOSFET be used in automotive applications?
Yes, it is qualified to AEC Q101 and designed for extreme automotive test conditions.
What is the thermal resistance from junction to ambient (TO-252)?
The thermal resistance junction to ambient (θJA) for TO-252 package is 100 °C/W.
What are the typical use cases for this MOSFET?
It is designed for DC/DC converters, Off-Line UPS systems, and Distributed Power Architectures like VRMs.