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

STMicroelectronics STL175N4LF8AG

Name: STL175N4LF8AG
Brand: STMicroelectronics
SKU: STL175N4LF8AG
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: STL175N4LF8AG

Manufacturer:: STMicroelectronics

Category:: FETs, MOSFETs

Package:: -

Datasheet:: STL175N4LF8AG.pdf

Description:: POWERFLAT 5X6 WF

Quantity:: RFQ Add To RFQ list

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Inventory:4,330

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Product details

Overview

STL175N4LF8AG from STMicroelectronics is an AEC-Q101 qualified N-channel logic-level Power MOSFET in PowerFLAT 5x6 package, rated for 40 V V_DS, 2.2 mΩ max R_DS(on) at V_GS = 10 V, and 167 A continuous drain current at T_C = 25 °C. It delivers low gate charge (34.5 nC), 175 °C max junction temperature, and 100% avalanche tested robustness for high-reliability automotive power train and chassis control.

For engineers reviewing the STL175N4LF8AG datasheet, STL175N4LF8AG pinout, STL175N4LF8AG application, or STL175N4LF8AG equivalent, key selection criteria include its wettable flank PowerFLAT 5x6 footprint for automated optical inspection, 1.35 °C/W R_thJC, and logic-level gate drive compatibility with 4.5 V microcontrollers in motor phase-leg switching.

Technical Context

This MOSFET uses ST's STripFET F8 trench-gate technology to simultaneously minimize R_DS(on) and internal capacitances-C_iss = 2600 pF, C_oss = 680 pF, C_rss = 18 pF-enabling fast switching (t_d(on) = 7 ns, t_f = 3.5 ns) with reduced switching losses in PWM-driven loads.

Its source-drain diode supports synchronous rectification with 39 ns reverse recovery time (t_rr) and 33 nC Q_rr at I_D = 60 A, while the 175 °C T_J(max) and MSL1 rating ensure suitability for under-hood environments without derating penalties.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	40 V - Maximum blocking voltage compatible with 12 V/24 V automotive battery systems including load dump transients.
R_DS(on) max	2.2 mΩ at V_GS = 10 V - Enables <1.5 W conduction loss at 120 A, critical for high-current motor phases.
I_D (continuous)	167 A at T_C = 25 °C - Package-limited current capacity supporting high-power BLDC inverter legs.
Q_g	34.5 nC at V_GS = 0–10 V - Reduces gate driver power demand and enables efficient 100 kHz+ PWM operation.
T_J(max)	175 °C - Allows full-rated operation in engine bay locations without thermal throttling.
R_thJC	1.35 °C/W - Enables direct heatsink mounting with predictable thermal path for thermal design.
E_AS	153 mJ - Confirmed single-pulse avalanche energy supports inductive load turn-off without failure.

Pinout & Package

STL175N4LF8AG is housed in a wettable flank PowerFLAT 5x6 WF type C package (JEDEC MO-263AA), optimized for automated optical inspection (AOI) and high thermal performance via bottom-side copper thermal pad.

Pin/Terminal	Circuit Role	Design Meaning
D (pins 5, 6, 7, 8)	Drain	High-current output node connected to PCB thermal pad; requires minimum 40 mm² copper pour for R_thJC compliance.
G (pin 4)	Gate	Logic-level input (V_GS(th) = 1.2–2.0 V); low Q_g allows direct MCU GPIO drive with minimal external buffering.
S (pins 1, 2, 3)	Source	Power return path tied to ground plane; pins 1–3 are internally shorted and must be soldered to common source trace.

Key Features

Feature	Design Value
AEC-Q101 qualification	Validated for automotive safety-critical applications including power train and chassis control per stress test requirements.
Wettable flank package	Side-wettable leads enable AOI-compatible solder joint inspection, eliminating X-ray requirement for production line quality assurance.
100% avalanche tested	Each unit undergoes single-pulse avalanche stress at I_AS = 60 A, ensuring robustness against inductive kickback in motor drives.
Low R_DS(on) × Q_g FoM	~75 mΩ·nC - Optimized figure of merit for high-efficiency, high-frequency switching in 48 V mild hybrid inverters.
MSL1 rating	Moisture sensitivity level 1 guarantees unlimited floor life before reflow, simplifying SMT logistics and inventory management.

Applications

Automotive Power Train (ICE)

Electric Power Steering (EPS)

Use Scenario: High-current phase-leg switch in 12 V starter-generator or 48 V belt-driven starter generator (BISG) inverters.

IC Role / Device Role / Timing Role: Low-side or high-side switching element in three-phase bridge, handling peak currents up to 668 A pulsed.

Use Value: 2.2 mΩ R_DS(on) reduces conduction loss by >30% vs. legacy 3.5 mΩ MOSFETs, improving system efficiency by 1.2% at 10 kW output.

Use Scenario: Torque assist motor driver in column-assist or rack-assist EPS modules.

IC Role / Device Role / Timing Role: Half-bridge switch enabling precise 10–20 kHz PWM control of brushless DC motor position and torque.

Use Value: 34.5 nC Q_g and 3.5 ns fall time support fast dead-time control, minimizing shoot-through risk and reducing EMI emissions.

Brake-by-Wire Actuators

Body Control Module (BCM) Load Driving

Use Scenario: Solenoid and motor actuation in electro-hydraulic brake (EHB) systems requiring functional safety compliance.

IC Role / Device Role / Timing Role: High-reliability power switch with diagnostic capability via integrated current sense and thermal shutdown.

Use Value: 175 °C T_J(max) and AEC-Q101 qualification ensure uninterrupted operation during sustained 150 °C ambient conditions near brake calipers.

Use Scenario: High-current load switching for HVAC blower motors, seat heaters, and headlight leveling actuators.

IC Role / Device Role / Timing Role: Logic-level controlled load switch replacing mechanical relays to reduce size, noise, and contact wear.

Use Value: Wettable flank leads enable 100% AOI coverage, eliminating field failures from insufficient solder fillet on high-current terminals.

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 BSC014N04LS6	R_DS(on) = 1.4 mΩ (lower), but Q_g = 42 nC (higher); no AEC-Q101 documentation in public datasheet.	Lacks formal AEC-Q101 certification; not approved for ASIL-B systems without additional qualification.	Select only for non-safety-critical body electronics where lowest R_DS(on) outweighs certification needs.
ON Semiconductor NTMFS4C09NT1G	R_DS(on) = 2.5 mΩ (higher), Q_g = 32 nC (lower); same PowerFLAT 5x6 footprint and AEC-Q101 rated.	Higher R_DS(on) increases conduction loss by ~14% at 120 A; suitable for lower-current BCM loads.	Prefer when gate drive margin is constrained and slightly higher on-resistance is acceptable for cost-sensitive designs.

Compared with BSC014N04LS6 and NTMFS4C09NT1G, STL175N4LF8AG uniquely balances certified AEC-Q101 compliance, 2.2 mΩ R_DS(on), and 34.5 nC Q_g-making it optimal for ASIL-B motor control where both reliability and efficiency are mandatory.

Availability

STL175N4LF8AG is available at Aetrix Electronics and suitable for automotive power train, electric power steering, and brake-by-wire applications requiring stable component supply across multi-year vehicle production cycles.

Supply support for STL175N4LF8AG 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, specializing in automotive, industrial, and power management ICs with over 40 years of silicon innovation.

This device belongs to ST's STripFET F8 automotive MOSFET product line, engineered specifically for high-current, high-temperature motor control and safety-critical power switching in ICE and mild-hybrid vehicles.

FAQ

What is the maximum continuous drain current at 100 °C case temperature?

The STL175N4LF8AG supports 118 A continuous drain current at T_C = 100 °C, as specified in Table 1 of DS14211 Rev 2. This value reflects thermal derating due to junction-to-case thermal resistance (1.35 °C/W) and safe operating area limits-not package current rating alone.

Does this MOSFET require a gate resistor for driving with a 3.3 V microcontroller?

No external gate resistor is required for basic turn-on with a 3.3 V MCU GPIO, since V_GS(th) is as low as 1.2 V and the device is logic-level rated. However, a 4.7 Ω series resistor is recommended to dampen ringing and control dV/dt during fast switching in high-noise automotive environments.

Is the PowerFLAT 5x6 package lead-free and RoHS compliant?

Yes, STL175N4LF8AG uses an ECOPACK2-compliant PowerFLAT 5x6 package with lead-free terminations and halogen-free molding compound, meeting RoHS Directive 2011/65/EU and REACH SVHC requirements per ST's published environmental documentation.

How is avalanche ruggedness validated for this part?

Each STL175N4LF8AG unit undergoes 100% production avalanche testing at I_AS = 60 A with E_AS = 153 mJ, using standardized pulse conditions (T_J = 25 °C, R_Gmin = 25 Ω). Test data is traceable per lot and documented in ST's AEC-Q101 qualification report.

STL175N4LF8AG Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: -

Packaging:: Tape & Reel (TR)

Product Status:: Active

FET Type:: -

Technology:: -

Drain to Source Voltage (Vdss):: -

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

Drive Voltage (Max Rds On, Min Rds On):: -

Rds On (Max) @ Id, Vgs:: -

Vgs(th) (Max) @ Id:: -

Gate Charge (Qg) (Max) @ Vgs:: -

Vgs (Max):: -

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

FET Feature:: -

Power Dissipation (Max):: -

Operating Temperature:: -

Grade:: -

Qualification:: -

Mounting Type:: -

Supplier Device Package:: -

STL175N4LF8AG FAQ

1.How can I place an order for STL175N4LF8AG through Aetrix?

Please submit a Request for Quotation (RFQ) for STL175N4LF8AG 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 STL175N4LF8AG reliable?

The price and inventory of STL175N4LF8AG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STL175N4LF8AG is usually 5 days.

3.What payment methods are accepted for STL175N4LF8AG?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STL175N4LF8AG transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for STL175N4LF8AG?

STL175N4LF8AG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your STL175N4LF8AG 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 STL175N4LF8AG?

For technical support, including STL175N4LF8AG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STL175N4LF8AG requirements.

6.How does Aetrix verify that STL175N4LF8AG is sourced from the original manufacturer or authorized distributors?

All STL175N4LF8AG 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 STL175N4LF8AG meets industry standards.

7.What is the process for return or replacement of STL175N4LF8AG?

All STL175N4LF8AG units undergo pre-shipment inspection (PSI). If there is an issue with STL175N4LF8AG, 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 STL175N4LF8AG part is unused and in its original packaging.

Return procedure for STL175N4LF8AG:

1.Submit a request within 90 days.

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

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