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Home > Products > Discrete Semiconductor Products > Transistors > FETs, MOSFETs > FETs, MOSFETs

STMicroelectronics STL8N6LF3

Name: STL8N6LF3
Brand: STMicroelectronics
SKU: STL8N6LF3
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: STL8N6LF3

Manufacturer:: STMicroelectronics

Category:: FETs, MOSFETs

Package:: 8-PowerVDFN

Datasheet:: STL8N6LF3.pdf

Description:: MOSFET N-CH 60V 20A POWERFLAT

Quantity:: RFQ Add To RFQ list

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Inventory:6,693

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Product details

Overview

STL8N6LF3 from STMicroelectronics is an automotive-grade N-channel 60 V, 22.5 mΩ typ. R_DS(on), 7.8 A continuous drain current Power MOSFET in PowerFLAT™ 5x6 wettable flank package, designed for high-efficiency switching in motor control and DC-DC converters.

For engineers reviewing the STL8N6LF3 datasheet, STL8N6LF3 pinout, STL8N6LF3 application, or STL8N6LF3 equivalent, key selection criteria include AEC-Q101 qualification, 175 °C max junction temperature, logic-level gate drive (V_GS(th) = 1–2.5 V), 100% avalanche rating, and thermal resistance R_thj-pcb = 35 °C/W on FR-4.

Technical Context

This device uses STripFET™ F3 technology to achieve low gate charge (Q_g = 13 nC) and optimized capacitance profile (C_iss = 668 pF, C_oss = 144 pF), enabling fast switching with t_d(on) = 9 ns and t_f = 5 ns under 4.7 Ω gate resistance.

It integrates a robust source-drain diode with I_SD = 7.8 A, V_SD = 1.3 V, and fast recovery (t_rr = 30 ns, Q_rr = 35 nC), supporting synchronous rectification and inductive load handling in automotive power stages.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	60 V - supports 48 V automotive systems with margin for transients
R_DS(on) @ V_GS = 10 V	22.5 mΩ typ. - enables <1.8 W conduction loss at 7.8 A
I_D (continuous, T_pcb = 25 °C)	7.8 A - defines usable current on standard 1-inch² FR-4 PCB
Q_g	13 nC - determines gate drive power and switching speed with 10 V drive
R_thj-pcb	35 °C/W - sets thermal rise on PCB-mounted layout without heatsink
t_rr	30 ns - limits reverse recovery loss in hard-switched topologies
T_j max	175 °C - meets under-hood temperature requirements per AEC-Q101

Pinout & Package

STL8N6LF3 is housed in a PowerFLAT™ 5x6 WF (wettable flank) package with exposed drain pad for thermal and electrical connection. The package features gull-wing leads compatible with automated optical inspection (AOI) and solder joint quality verification.

Pin/Terminal	Circuit Role	Design Meaning
Drain (exposed pad)	Main current path output / heat sink interface	Electrically and thermally connects to PCB copper pour; requires full-solder coverage
Source (pins 1–2)	Power return path / reference node	Low-inductance dual-pin configuration minimizes source inductance in high-dI/dt switching
Gate (pin 3)	Control input for channel conduction	Logic-level compatible (V_GS(th) = 1–2.5 V); requires <13 nC charge for full turn-on

Key Features

Feature	Design Value
AEC-Q101 qualified	Validated for automotive applications including engine control, body electronics, and ADAS power stages
Wettable flank leads	Enables automated optical inspection of solder fillets for production line process control
100% avalanche rated	Guarantees ruggedness against unclamped inductive switching events without derating
Logic-level gate threshold	Operates fully with 3.3 V or 5 V microcontroller GPIO without level-shifting circuitry
STripFET™ F3 technology	Delivers lower R_DS(on) × Q_g figure-of-merit than prior generations for reduced switching + conduction loss

Applications

Automotive Body Control Module (BCM)

48 V DC-DC Converter Primary Switch

Use Scenario: Driving solenoids, relays, and LED lighting loads in door modules and seat controls.

IC Role / Device Role / Timing Role: High-side or low-side power switch controlled by 3.3 V MCU GPIO.

Use Value: Logic-level gate enables direct MCU drive; 175 °C rating ensures reliability near HVAC ducts or under-dash locations.

Use Scenario: Primary-side synchronous rectifier or main switch in bidirectional 48 V/12 V converters.

IC Role / Device Role / Timing Role: Fast-turning N-channel switch operating at 100–300 kHz with low Q_g and C_oss.

Use Value: 13 nC Q_g and 5 ns fall time reduce gate drive loss; 60 V rating covers 48 V bus + 20% transient margin.

Electric Power Steering (EPS) Motor Driver

Industrial BLDC Inverter Half-Bridge

Use Scenario: Low-side current sensing and phase switching in three-phase EPS motor drivers.

IC Role / Device Role / Timing Role: Low-side switch with integrated source-drain diode for freewheeling current.

Use Value: 30 ns t_rr and 35 nC Q_rr minimize shoot-through risk and recovery loss during PWM commutation.

Use Scenario: Half-bridge leg in 24–48 V industrial BLDC drives for pumps and fans.

IC Role / Device Role / Timing Role: High-efficiency, thermally robust switching element with PCB-only cooling.

Use Value: 35 °C/W R_thj-pcb allows 7.8 A continuous operation on standard FR-4 without heatsink or forced air.

Equivalent & Alternatives

The following parts are listed as comparable options for similar N-channel 60 V Power MOSFET applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
Infineon BSC028N06NS3	R_DS(on) = 2.8 mΩ @ 10 V (lower), Q_g = 22 nC (higher), same PowerSO-8 package	Higher current capability but requires stronger gate driver; not AEC-Q101 qualified	Select for non-automotive high-current apps where gate drive strength permits
ON Semiconductor NTMFS5C673NL	R_DS(on) = 6.7 mΩ @ 10 V, Q_g = 11.5 nC, Power56 package, AEC-Q101 qualified	Lower R_DS(on) but smaller 5×6 footprint; higher cost per amp	Select when board space is constrained and <5 mΩ R_DS(on) is critical

Compared with BSC028N06NS3 and NTMFS5C673NL, STL8N6LF3 offers balanced R_DS(on)/Q_g trade-off, AEC-Q101 compliance, and wettable flank leads-making it optimal for cost-sensitive, AOI-capable automotive PCBs requiring 7–8 A continuous current.

Availability

STL8N6LF3 is available at Aetrix Electronics and suitable for automotive body control modules, 48 V DC-DC converters, and electric power steering motor drivers requiring stable component supply across extended temperature and lifecycle requirements.

Supply support for STL8N6LF3 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

STMicroelectronics is a global semiconductor leader headquartered in Geneva, designing and manufacturing microcontrollers, power devices, sensors, and analog ICs for automotive, industrial, and consumer markets.

The STL8N6LF3 belongs to ST's STripFET™ F3 Power MOSFET product line, engineered specifically for high-reliability automotive switching applications demanding AEC-Q101 qualification, high-temperature operation, and robust avalanche performance.

FAQ

Is STL8N6LF3 suitable for hot-swap or inrush current limiting applications?

Yes. Its 100% avalanche rating and 7.8 A I_AS enable safe operation during unclamped inductive turn-off and transient overcurrent events. The 175 °C maximum junction temperature and low R_DS(on) support short-duration inrush limiting in 48 V systems without external current sense or protection circuitry.

What is the recommended PCB layout for thermal performance?

Use a minimum 1-inch² copper pour connected to the exposed drain pad with ≥6 thermal vias (0.3 mm diameter, 0.8 mm pitch) to inner ground/power planes. Maintain 0.25 mm solder mask opening around wettable flanks for reliable AOI. Avoid routing signal traces under the package.

Does STL8N6LF3 require a gate resistor for EMI control?

Yes. A 4.7 Ω series gate resistor is specified in the datasheet for switching time characterization (t_d(on), t_f). This value balances EMI suppression and switching loss; values >10 Ω increase losses, while <2.2 Ω may cause ringing and overshoot in high-dI/dt layouts.

Can STL8N6LF3 be used in synchronous rectification mode?

Yes. Its integrated source-drain diode has t_rr = 30 ns and Q_rr = 35 nC, enabling use as a synchronous rectifier in buck or flyback topologies up to ~300 kHz. However, external Schottky diodes remain preferred above 200 kHz for lowest recovery loss.

STL8N6LF3 Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: STripFET™ F3

Package/Case:: 8-PowerVDFN

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

FET Type:: N-Channel

Technology:: MOSFET (Metal Oxide)

Drain to Source Voltage (Vdss):: 60 V

Current - Continuous Drain (Id) @ 25°C:: 20A (Tc)

Drive Voltage (Max Rds On, Min Rds On):: 5V, 10V

Rds On (Max) @ Id, Vgs:: 30mOhm @ 4A, 10V

Vgs(th) (Max) @ Id:: 2.5V @ 250µA

Gate Charge (Qg) (Max) @ Vgs:: 13 nC @ 10 V

Vgs (Max):: ±20V

Input Capacitance (Ciss) (Max) @ Vds:: 668 pF @ 25 V

FET Feature:: -

Power Dissipation (Max):: 65W (Tc)

Operating Temperature:: -55°C ~ 175°C (TJ)

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Surface Mount

Supplier Device Package:: PowerFlat™ (5x6)

STL8N6LF3 FAQ

1.How can I place an order for STL8N6LF3 through Aetrix?

Please submit a Request for Quotation (RFQ) for STL8N6LF3 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for STL8N6LF3 reliable?

The price and inventory of STL8N6LF3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STL8N6LF3 is usually 5 days.

3.What payment methods are accepted for STL8N6LF3?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STL8N6LF3 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for STL8N6LF3?

STL8N6LF3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your STL8N6LF3 order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for STL8N6LF3?

For technical support, including STL8N6LF3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STL8N6LF3 requirements.

6.How does Aetrix verify that STL8N6LF3 is sourced from the original manufacturer or authorized distributors?

All STL8N6LF3 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that STL8N6LF3 meets industry standards.

7.What is the process for return or replacement of STL8N6LF3?

All STL8N6LF3 units undergo pre-shipment inspection (PSI). If there is an issue with STL8N6LF3, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The STL8N6LF3 part is unused and in its original packaging.

Return procedure for STL8N6LF3:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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