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STMicroelectronics STL70N4LLF5

STL70N4LLF5 MOSFET N-CH 40V 70A PowerFlat, AEC-Q101

MPNSTL70N4LLF5
End of Life

STMicroelectronics STripFET V Automotive series, STL70N4LLF5, N-Channel MOSFET, 40V Vdss, 70A Id, 6.5mOhm Rds(on) at 10V, 13nC Qg, PowerFlat 5x6, AEC-Q101 qualified.

$1.63Ref. price · indicative, final on quote
Packaging8-PowerVDFN
StockContact for availability
MOQ1 pcs
  • 100% new & originalTraceable channels only — no refurbs, no pulls, no remarked parts.
  • Date & lot codes on quoteStated per line before you commit; label photos on request.
  • MSL-compliant ESD packingMoisture-sealed bags with indicator cards; reels photo-verified.
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Specifications

STL70N4LLF5 Technical Specifications
ParameterValue
SeriesAutomotive, AEC-Q101, STripFET™ V
FET typeN-Channel
Mounting typeSurface Mount, Wettable Flank
Drain to source voltage40 V
Drive voltage (Max rds on, min rds on)4.5V, 10V
Current - continuous drain (Id) @ 25°C70A (Tc)
Power dissipation72W (Tc)
Operating temperature-55°C ~ 175°C (TJ)
PackageTape & Reel (TR); Cut Tape (CT)
Vgs±22V
TechnologyMOSFET (Metal Oxide)
Case8-PowerVDFN
Vgs(th) (Max) @ id1V @ 250µA
Rds on (Max) @ id, vgs6.5mOhm @ 9A, 10V
Gate charge (Qg) (Max) @ vgs13 nC @ 4.5 V
Input capacitance (Ciss) (Max) @ vds1800 pF @ 25 V

Product details

AEC-Q101 qualification and the -55 °C to 175 °C junction temperature range suit it for under-hood and transmission-mounted electronics where ambient heat soaks well above 85 °C.

Gate charge and switching speed — 13 nC at 4.5 V

Total gate charge is 13 nC at 4.5 V, which means a standard 1 A gate driver can switch this FET in about 13 ns. The 1800 pF input capacitance at 25 V drain-source is moderate for a 70 A device, so the gate drive loop — trace inductance and driver output impedance — will dominate the switching edge, not the FET's own capacitance. Low Qg also reduces cross-conduction losses in half-bridge topologies where dead time is tight.

Package and mounting — PowerFlat with wettable flanks

The 8-lead PowerFlat (5x6 mm) package uses wettable flanks, which means the side pads are solderable — this allows automated optical inspection (AOI) of the solder joints after reflow, a requirement for automotive-grade assembly. The large exposed pad on the bottom conducts heat to the PCB copper plane; the 72 W power dissipation rating assumes a thermal pad with adequate via array and a 2 oz copper pour on the top layer.

Active production and compliance status

It is ROHS3 compliant and qualified to AEC-Q101, so it meets the automotive stress-test requirements for temperature cycling, high-temperature reverse bias, and humidity.

Frequently asked questions

What is the maximum drain current for STL70N4LLF5?

The rating is specified at Tc=25 °C; derating above that temperature follows the normalised curve in the datasheet. Pulse current capability is higher but not listed in the base specs — refer to the pulsed drain current rating in the full datasheet.