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

STMicroelectronics STL117N4LF7AG

Name: STL117N4LF7AG
Brand: STMicroelectronics
SKU: STL117N4LF7AG
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: STL117N4LF7AG

Manufacturer:: STMicroelectronics

Category:: FETs, MOSFETs

Package:: 8-PowerVDFN

Datasheet:: STL117N4LF7AG.pdf

Description:: MOSFET N-CH 40V 119A POWERFLAT

Quantity:: RFQ Add To RFQ list

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Product details

Overview

STL117N4LF7AG from STMicroelectronics is an AEC-Q101 qualified N-channel Power MOSFET using STripFET™ F7 technology in a PowerFLAT™ 5x6 wettable flank package, delivering 40 V V_DS, 2.5 mΩ typ. R_DS(on) at V_GS = 10 V, 119 A continuous drain current at T_C = 25 °C, and 38 ns reverse recovery time - optimized for high-efficiency automotive DC-DC converters and motor control inverters.

For engineers reviewing the STL117N4LF7AG datasheet, STL117N4LF7AG pinout, STL117N4LF7AG application, or STL117N4LF7AG equivalent, key selection criteria include its low Crss/Ciss ratio for EMI immunity, high avalanche ruggedness (unclamped inductive switching rated), and wettable flank package for automated optical inspection in automotive PCB assembly.

Technical Context

This MOSFET employs an enhanced trench gate structure that reduces both R_DS(on) and gate charge (Q_g = 27.6 nC typ.), enabling fast switching with low conduction and switching losses. Its Crss/Ciss ratio of ~3.3% (58 pF / 1780 pF) suppresses Miller-induced turn-on during high-dV/dt operation.

The device operates across -55 to 175 °C junction temperature, with R_th(j-case) = 1.6 °C/W and R_th(j-pcb) = 32 °C/W on FR-4 (1 in², 2 oz Cu), supporting thermally demanding under-hood applications where thermal reliability and SOA robustness are critical.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	40 V - Maximum blocking voltage compatible with 12 V/24 V automotive battery systems and 48 V mild-hybrid architectures.
R_DS(on) max	3.5 mΩ at V_GS = 10 V, T_C = 25 °C - Enables <1.5 W conduction loss at 119 A, reducing heatsink requirements.
I_D cont	119 A at T_C = 25 °C - Supports high-current power stages in traction inverters and starter generators.
Q_g	27.6 nC typ. - Low gate drive energy enables use with standard gate drivers (e.g., STGAP2SIC) without external boost.
t_r/t_f	11 ns rise / 18 ns fall - Fast edge rates minimize switching transition losses in >100 kHz PWM applications.
Q_rr	36 nC - Low reverse recovery charge reduces diode commutation loss and EMI in synchronous rectification.
T_j range	-55 to 175 °C - Qualified for engine bay, transmission, and powertrain control units per AEC-Q101 stress test conditions.

Pinout & Package

STL117N4LF7AG uses the PowerFLAT™ 5x6 WF type C package - a 5 mm × 6 mm surface-mount, wettable flank, dual-side cooling package with exposed drain pad for enhanced thermal performance and AOI-compatible solder joint inspection.

Pin/Terminal	Circuit Role	Design Meaning
D (Pins 5, 6, 7, 8)	Drain	Internally connected to large copper-exposed bottom pad; primary heat path to PCB; requires full-solder thermal pad for R_th(j-pcb) ≤ 32 °C/W.
G (Pin 4)	Gate	Single gate input terminal; low input capacitance (C_iss = 1780 pF) minimizes driver loading and layout sensitivity.
S (Pins 1, 2, 3)	Source	Three-source terminals reduce source inductance and improve current sharing in high-di/dt switching; referenced to PCB ground plane.

Key Features

Feature	Design Value
AEC-Q101 qualification	Validated for automotive powertrain and chassis applications including temperature cycling, HTRB, and UIS testing.
Low Crss/Ciss ratio	3.3% (58 pF / 1780 pF) - Reduces risk of false turn-on during high-speed hard-switching in noisy environments.
High avalanche ruggedness	Rated for unclamped inductive switching (UIS) up to 476 A peak - supports fault-tolerant design without external snubbers.
Wettable flank package	Side-wettable leads enable automated optical inspection (AOI) of solder fillets - critical for zero-defect automotive manufacturing.
Excellent FoM (R_DS(on) × Q_g)	96.6 mΩ·nC - Balances conduction and switching losses better than competing 40 V MOSFETs in same package.

Applications

Automotive DC-DC Converters

Electric Power Steering (EPS)

Use Scenario: High-current bidirectional buck-boost converter in 48 V/12 V hybrid architectures.

IC Role / Device Role / Timing Role: Primary high-side switch handling 100+ A continuous current with 100–200 kHz PWM switching.

Use Value: 2.5 mΩ R_DS(on) reduces conduction loss by >30% vs. legacy 40 V MOSFETs, improving system efficiency from 92% to 94.5% at full load.

Use Scenario: Three-phase inverter driving brushless DC motor in column-assist EPS systems.

IC Role / Device Role / Timing Role: Low-side switching element in 60–80 kHz SVPWM-controlled inverter stage.

Use Value: 38 ns t_rr and 36 nC Q_rr minimize body diode conduction loss and associated thermal stress during dead-time commutation.

On-Board Charger (OBC) PFC Stage

Start-Stop Battery Management

Use Scenario: Boost PFC switch in 3.3 kW single-phase OBC front-end.

IC Role / Device Role / Timing Role: Fast-switching N-channel MOSFET operating in continuous conduction mode (CCM) at 65–100 kHz.

Use Value: Low Q_gd/Q_gs ratio (5.7 nC / 5.8 nC) ensures clean gate drive waveform and stable zero-voltage switching (ZVS) behavior.

Use Scenario: Load switch isolating auxiliary battery during engine cranking events.

IC Role / Device Role / Timing Role: High-reliability power path switch with integrated overtemperature and short-circuit protection.

Use Value: 175 °C max T_j and 476 A pulsed rating allow safe operation during 500 ms cranking pulses with 300 A surge currents.

Equivalent & Alternatives

The following parts are listed as comparable options for similar N-channel 40 V automotive power MOSFET applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
Infineon BSC010N04LS6	R_DS(on) = 1.0 mΩ typ. at V_GS = 10 V, but Q_g = 43 nC - higher switching loss and gate drive demand.	Better for ultra-low-loss fixed-frequency applications; less suitable for high-frequency ZVS or space-constrained layouts due to larger Q_g.	Select when lowest possible conduction loss dominates over switching frequency and gate drive capability.
ON Semiconductor NTMFS4C09NT1G	R_DS(on) = 3.8 mΩ max at V_GS = 10 V, Crss = 75 pF - higher Crss/Ciss ratio (4.2%) and no AEC-Q101 documentation in public datasheet.	Limited to non-safety-critical industrial applications; lacks validated automotive qualification evidence.	Acceptable for cost-sensitive non-automotive designs where AEC-Q101 is not mandated and EMI margin is sufficient.

Compared with BSC010N04LS6 and NTMFS4C09NT1G, STL117N4LF7AG offers the optimal balance of low R_DS(on), low Q_g, AEC-Q101 compliance, and wettable flank inspection - making it the preferred choice for production automotive inverters and DC-DC converters requiring zero-defect traceability.

Availability

STL117N4LF7AG is available at Aetrix Electronics and suitable for automotive powertrain control, electric power steering systems, and on-board chargers requiring stable component supply across multi-year vehicle production cycles.

Supply support for STL117N4LF7AG 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 microcontrollers, power devices, sensors, and analog ICs 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 engine control units, ADAS power supplies, and electrified vehicle subsystems.

FAQ

What is the maximum allowable gate-source voltage for STL117N4LF7AG?

The absolute maximum V_GS is ±20 V, per Table 1 of DS11591 Rev 6. Operation beyond this risks permanent gate oxide damage. For reliable long-term performance, gate drive should be limited to +12 V to +15 V for turn-on and –5 V to –10 V for active miller clamping, especially in high-noise automotive environments.

Does STL117N4LF7AG support synchronous rectification in buck converters?

Yes - its low R_DS(on) (2.5 mΩ typ.), fast reverse recovery (t_rr = 38 ns), and low Q_rr (36 nC) make it suitable as a synchronous rectifier in high-current, high-frequency buck converters. The three-source pins also reduce parasitic inductance during freewheeling, minimizing voltage overshoot.

How does the wettable flank feature impact PCB assembly yield?

The wettable flank design allows automated optical inspection (AOI) of solder fillet formation on all four side terminals, enabling early detection of head-in-pillow, insufficient wetting, or tombstoning defects. This directly improves first-pass yield in automotive SMT lines targeting <10 ppm defect rates.

Can STL117N4LF7AG replace older STripFET™ F4 or F5 MOSFETs in existing designs?

Yes - it is pin-to-pin compatible with other PowerFLAT™ 5x6 devices like STL110N4LF7AG and STL100N4LF7AG. Key improvements include lower R_DS(on), reduced Q_g, and tighter Crss/Ciss ratio, allowing direct drop-in replacement with measurable efficiency gains and improved thermal margin without layout changes.

STL117N4LF7AG 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:: 119A (Tc)

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

Rds On (Max) @ Id, Vgs:: 3.5mOhm @ 13A, 10V

Vgs(th) (Max) @ Id:: 2.5V @ 250µA

Gate Charge (Qg) (Max) @ Vgs:: 27.6 nC @ 10 V

Vgs (Max):: ±20V

Input Capacitance (Ciss) (Max) @ Vds:: 1780 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)

STL117N4LF7AG FAQ

1.How can I place an order for STL117N4LF7AG through Aetrix?

Please submit a Request for Quotation (RFQ) for STL117N4LF7AG 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 STL117N4LF7AG reliable?

The price and inventory of STL117N4LF7AG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STL117N4LF7AG is usually 5 days.

3.What payment methods are accepted for STL117N4LF7AG?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STL117N4LF7AG transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for STL117N4LF7AG?

STL117N4LF7AG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your STL117N4LF7AG 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 STL117N4LF7AG?

For technical support, including STL117N4LF7AG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STL117N4LF7AG requirements.

6.How does Aetrix verify that STL117N4LF7AG is sourced from the original manufacturer or authorized distributors?

All STL117N4LF7AG 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 STL117N4LF7AG meets industry standards.

7.What is the process for return or replacement of STL117N4LF7AG?

All STL117N4LF7AG units undergo pre-shipment inspection (PSI). If there is an issue with STL117N4LF7AG, 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 STL117N4LF7AG part is unused and in its original packaging.

Return procedure for STL117N4LF7AG:

1.Submit a request within 90 days.

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

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