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

STMicroelectronics STL105N4LF7AG

Name: STL105N4LF7AG
Brand: STMicroelectronics
SKU: STL105N4LF7AG
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: STL105N4LF7AG

Manufacturer:: STMicroelectronics

Category:: FETs, MOSFETs

Package:: 8-PowerVDFN

Datasheet:: STL105N4LF7AG.pdf

Description:: MOSFET N-CH 40V 105A POWERFLAT

Quantity:: RFQ Add To RFQ list

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Inventory:10,540

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Product details

Overview

STL105N4LF7AG from STMicroelectronics is an automotive-grade N-channel Power MOSFET with 40 V V_DS, 3.0 mΩ typ. R_DS(on) at V_GS = 10 V, 105 A continuous drain current at T_C = 25 °C, and AEC-Q101 qualification. It uses STripFET™ F7 trench technology for low conduction loss and fast switching in high-current DC-DC converters and motor control stages.

For engineers reviewing the STL105N4LF7AG datasheet, STL105N4LF7AG pinout, STL105N4LF7AG application, or STL105N4LF7AG equivalent, key selection criteria include its 1.6 °C/W R_thj-case, wettable flank PowerFLAT™ 5x6 package for automated optical inspection, low Crss/Ciss ratio for EMI robustness, and 420 A pulsed drain capability in unclamped inductive switching.

Technical Context

This MOSFET employs an enhanced trench-gate STripFET™ F7 structure that reduces both R_DS(on) and gate charge (Q_g = 23.3 nC typ.), enabling high-efficiency synchronous rectification in 12 V automotive systems. Its low Crss (50 pF typ.) relative to Ciss (1500 pF typ.) improves noise immunity during high-dV/dt switching.

The device supports operation from –55 °C to 175 °C junction temperature and delivers 94 W total dissipation at T_C = 25 °C. Its source-drain diode exhibits t_rr = 32 ns and Q_rr = 27 nC under defined inductive recovery conditions, supporting hard-switched topologies with controlled reverse recovery.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	40 V - Maximum blocking voltage for 12 V battery rail applications with surge margin
R_DS(on) typ.	3.0 mΩ at V_GS = 10 V - Enables <1.2 W conduction loss at 20 A continuous load
I_D cont. @ T_C = 25 °C	105 A - Supports high-current power stages without parallel devices
Q_g	23.3 nC - Reduces gate drive power and enables 100+ kHz PWM operation
R_thj-case	1.6 °C/W - Allows direct heatsinking to PCB copper or external metal slug
t_rr	32 ns - Limits switching node oscillation and EMI in buck/boost converters
AEC-Q101	Qualified - Validated for automotive powertrain and body electronics per stress test requirements

Pinout & Package

STL105N4LF7AG is housed in a PowerFLAT™ 5x6 WF type C package with exposed drain pad on bottom and wettable flanks for solder joint inspection. The 5-pin configuration features dual-source terminals (pins 1–2 and 4–5) and single gate (pin 3).

Pin/Terminal	Circuit Role	Design Meaning
1,2,4,5 (Source)	Power return path and substrate connection	Parallel low-inductance source routing minimizes common-source inductance in high-di/dt switching
3 (Gate)	Control input for channel modulation	Low-input-capacitance terminal compatible with standard 3.3 V/5 V logic-level drivers
Bottom pad (Drain)	Main power output and thermal interface	Exposed copper drain provides primary thermal conduction path and electrical connection to PCB ground plane

Key Features

Feature	Design Value
Wettable flank leads	Enables automated optical inspection (AOI) of solder fillets on SMT assembly lines
Low Crss/Ciss ratio	~3.3% - Suppresses Miller-induced shoot-through in half-bridge configurations
High avalanche ruggedness	Rated for unclamped inductive switching (UIS) up to 420 A - Eliminates need for external snubbers in solenoid drivers
Enhanced FoM (R_DS(on) × Q_g)	~70 mΩ·nC - Balances conduction and switching losses for optimal efficiency at 50–200 kHz

Applications

Automotive Body Control Module (BCM)

12 V Automotive DC-DC Converter

Use Scenario: High-side load switching for headlights, HVAC actuators, and window lift motors.

IC Role / Device Role / Timing Role: N-channel high-side switch with integrated bootstrap gate drive support.

Use Value: 3.0 mΩ R_DS(on) limits self-heating to <1.5 W at 25 A, enabling compact thermally constrained modules.

Use Scenario: Synchronous rectifier in 12 V → 5 V/3.3 V buck converter for ADAS domain controllers.

IC Role / Device Role / Timing Role: Low-side synchronous rectifier operating at 300 kHz PWM frequency.

Use Value: 23.3 nC Q_g and 32 ns t_rr reduce switching loss by >25% versus legacy FETs in same package.

Electric Power Steering (EPS) Motor Driver

48 V Mild Hybrid DC-DC Bidirectional Converter

Use Scenario: Half-bridge leg in three-phase inverter driving 12 V EPS assist motor.

IC Role / Device Role / Timing Role: Low-side switching element with fast turn-off (t_f = 15 ns) for precise current regulation.

Use Value: 1.6 °C/W R_thj-case allows direct mounting to aluminum heat spreader, maintaining T_j < 130 °C at 74 A continuous.

Use Scenario: Buck-boost stage in bidirectional 12 V ↔ 48 V converter for regenerative braking energy transfer.

IC Role / Device Role / Timing Role: High-current, high-reliability switching device in interleaved phase-leg topology.

Use Value: AEC-Q101 qualification and 175 °C max T_j ensure functional safety compliance across full vehicle thermal envelope.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
Infineon BSC014N04LS6	R_DS(on) = 1.4 mΩ @ 10 V, but 5× higher Q_g (115 nC); PowerSO-8 package lacks wettable flanks	Better conduction loss at low current; unsuitable for AOI-based automotive manufacturing	Prefer STL105N4LF7AG where automated solder inspection and EMI robustness are required
ON Semiconductor NTMFS4C027N	R_DS(on) = 2.7 mΩ @ 10 V, Q_g = 32 nC, same PowerFLAT 5x6 footprint but not AEC-Q101 qualified	Lacks automotive qualification; lower thermal resistance (1.3 °C/W) but no UIS rating	Select STL105N4LF7AG for safety-critical 12 V systems requiring validated reliability

Compared with BSC014N04LS6 and NTMFS4C027N, STL105N4LF7AG uniquely combines AEC-Q101 qualification, wettable flank inspection capability, and optimized Crss/Ciss ratio-making it preferred for high-volume automotive power stages where process control and EMI immunity are design constraints.

Availability

STL105N4LF7AG is available at Aetrix Electronics and suitable for automotive body control modules, 12 V DC-DC converters, and electric power steering motor drivers requiring stable component supply and long-term production continuity.

Supply support for STL105N4LF7AG 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, Switzerland, designing and manufacturing analog, microcontroller, power, and sensor solutions for automotive, industrial, and consumer markets.

This device belongs to ST's STripFET™ F7 automotive power MOSFET product line, engineered specifically for high-current, high-reliability switching in 12 V and 48 V vehicle electrical architectures.

FAQ

Is STL105N4LF7AG suitable for high-side switching with 12 V gate drive?

Yes. With V_GS(th) ranging from 1.5 V to 2.5 V and R_DS(on) specified at V_GS = 4.5 V (max 8.0 mΩ), it fully enhances using standard 12 V gate drivers. Its ±20 V V_GS rating supports robust gate overvoltage margin in noisy automotive environments.

What is the maximum PCB copper area needed for thermal performance?

For R_thj-pcb = 32 °C/W (FR-4, 1 inch², 2 oz Cu), minimum recommended copper area is 250 mm² (e.g., 15 mm × 17 mm) connected directly to the exposed drain pad. Larger copper or internal layers further reduce thermal resistance.

Does STL105N4LF7AG support paralleling for higher current?

Yes. Its positive temperature coefficient of R_DS(on) (confirmed in Figure 10) ensures inherent current sharing when paralleled. Designers must match gate loop inductance and use Kelvin source connections to maintain balance at >200 A aggregate current.

Can this MOSFET replace older STripFET F4 or F5 devices in existing designs?

Yes, with layout verification. STL105N4LF7AG shares identical PowerFLAT 5x6 footprint and pinout, but offers 25% lower R_DS(on) and 30% lower Q_g. Gate drive timing and PCB thermal relief should be revalidated due to faster switching edges and higher peak currents.

STL105N4LF7AG Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: STripFET™ F7

Package/Case:: 8-PowerVDFN

Packaging:: Tape & Reel (TR)

Product Status:: Active

FET Type:: N-Channel

Technology:: MOSFET (Metal Oxide)

Drain to Source Voltage (Vdss):: 40 V

Current - Continuous Drain (Id) @ 25°C:: 105A (Tc)

Drive Voltage (Max Rds On, Min Rds On):: 4.5V, 10V

Rds On (Max) @ Id, Vgs:: 4.5mOhm @ 11.5A, 10V

Vgs(th) (Max) @ Id:: 2.5V @ 250µA

Gate Charge (Qg) (Max) @ Vgs:: 23.3 nC @ 10 V

Vgs (Max):: ±20V

Input Capacitance (Ciss) (Max) @ Vds:: 1500 pF @ 25 V

FET Feature:: -

Power Dissipation (Max):: 94W (Tc)

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

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Surface Mount

Supplier Device Package:: PowerFlat™ (5x6)

STL105N4LF7AG FAQ

1.How can I place an order for STL105N4LF7AG through Aetrix?

Please submit a Request for Quotation (RFQ) for STL105N4LF7AG 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 STL105N4LF7AG reliable?

The price and inventory of STL105N4LF7AG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STL105N4LF7AG is usually 5 days.

3.What payment methods are accepted for STL105N4LF7AG?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STL105N4LF7AG transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for STL105N4LF7AG?

STL105N4LF7AG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your STL105N4LF7AG 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 STL105N4LF7AG?

For technical support, including STL105N4LF7AG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STL105N4LF7AG requirements.

6.How does Aetrix verify that STL105N4LF7AG is sourced from the original manufacturer or authorized distributors?

All STL105N4LF7AG 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 STL105N4LF7AG meets industry standards.

7.What is the process for return or replacement of STL105N4LF7AG?

All STL105N4LF7AG units undergo pre-shipment inspection (PSI). If there is an issue with STL105N4LF7AG, 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 STL105N4LF7AG part is unused and in its original packaging.

Return procedure for STL105N4LF7AG:

1.Submit a request within 90 days.

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

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