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

STMicroelectronics STL300N4LF8

Name: STL300N4LF8
Brand: STMicroelectronics
SKU: STL300N4LF8
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: STL300N4LF8

Manufacturer:: STMicroelectronics

Category:: FETs, MOSFETs

Package:: 8-PowerVDFN

Datasheet:: STL300N4LF8.pdf

Description:: POWER FLAT 8L 6X5X1 P1.27

Quantity:: RFQ Add To RFQ list

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Product details

Overview

STL300N4LF8 from STMicroelectronics is a 40 V N-channel logic-level Power MOSFET in PowerFLAT 5x6 package, featuring 1.0 mΩ max. R_DS(on) at V_GS = 10 V, 304 A continuous drain current at T_C = 25 °C, and 175 °C maximum junction temperature. It delivers ultra-low conduction loss and fast switching for high-efficiency motor drives and industrial power converters.

For engineers reviewing the STL300N4LF8 datasheet, STL300N4LF8 pinout, STL300N4LF8 application, or STL300N4LF8 equivalent, key selection criteria include its 1.0 mΩ on-resistance, 70 nC total gate charge at 10 V, 100% avalanche tested ruggedness, and PowerFLAT 5x6 thermal performance with R_thJC = 0.9 °C/W.

Technical Context

This MOSFET employs ST's STripFET F8 trench-gate technology to simultaneously minimize R_DS(on), output capacitance (C_oss = 1700 pF), and reverse transfer capacitance (C_rss = 25 pF), enabling high-frequency synchronous rectification and hard-switched topologies. Its logic-level gate threshold (V_GS(th) = 1.2–2.0 V) ensures full enhancement with standard 3.3 V/5 V microcontroller outputs.

The device integrates a robust body diode with 121 A forward current capability, 1.1 V forward voltage at 60 A, and low Q_rr = 70 nC - critical for minimizing commutation losses in bridge configurations. Its MSL1 rating and 100% avalanche testing support reliable operation under transient overloads in motor control and UPS systems.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	40 V - Maximum blocking voltage for 24–36 V DC bus applications including BLDC motor inverters and industrial SMPS.
R_DS(on) max.	1.0 mΩ at V_GS = 10 V - Enables <1.8 W conduction loss at 300 A, reducing heatsink requirements in high-current power stages.
I_D continuous	304 A at T_C = 25 °C - Sustains peak load currents in industrial tools and servo drives without derating when properly heatsinked.
Q_g	70 nC at V_GS = 0–10 V - Supports efficient gate driving with ≤2 W driver power at 100 kHz switching, minimizing gate driver stress.
T_J max.	175 °C - Allows operation in harsh environments (e.g., enclosed motor controllers) while maintaining SOA integrity up to 10 ms pulses.
E_AS	420 mJ - Withstands single-pulse inductive energy surges common in motor phase-leg short-circuit events without failure.
R_thJC	0.9 °C/W - Enables direct thermal coupling to copper PCBs or heatsinks, delivering >150 W dissipation capability in compact layouts.

Pinout & Package

STL300N4LF8 uses the PowerFLAT 5x6 type B surface-mount package (JEDEC MO-263AB), optimized for high-current PCB mounting with exposed drain pad for thermal and electrical performance. The package features a 5 mm × 6 mm footprint, 1.0 mm max. height, and MSL1 moisture sensitivity rating.

Pin/Terminal	Circuit Role	Design Meaning
D (Pins 5, 6, 7, 8)	Drain	High-current output node connected to internal silicon die; electrically and thermally tied to exposed metal pad for low-inductance, low-resistance path.
G (Pin 4)	Gate	Control input requiring ≤70 nC charge; logic-compatible with 3.3 V/5 V drivers; isolated by 20 V max. V_GS rating.
S (Pins 1, 2, 3)	Source	Reference node for gate drive and current sensing; multiple pins reduce parasitic inductance and improve current sharing in high-di/dt switching.

Key Features

Feature	Design Value
STripFET F8 trench architecture	Reduces R_DS(on) × Q_g figure-of-merit by 35% vs. prior generation, enabling higher efficiency at 50–200 kHz switching frequencies.
100% avalanche tested	Guarantees single-pulse ruggedness up to 60 A and 420 mJ, eliminating need for external snubbers in inductive load switching.
Logic-level gate drive	Turns fully on with V_GS ≥ 4.5 V, compatible with microcontroller GPIOs and low-voltage gate drivers without level-shifting circuitry.
PowerFLAT 5x6 thermal design	Exposes drain pad for direct PCB copper pour attachment, achieving 0.9 °C/W junction-to-case resistance for minimal thermal rise.
MSL1 rating	Permits unlimited floor life and reflow compatibility with standard lead-free solder profiles without baking preconditioning.

Applications

Industrial Motor Drives

High-Efficiency DC-DC Converters

Use Scenario: Three-phase inverter stage in 5–10 kW industrial servo drives operating at 20–40 kHz PWM frequency.

IC Role / Device Role / Timing Role: High-side and low-side switch in IGBT/MOSFET half-bridge modules, handling 300 A peak phase current with <10 ns switching timing precision.

Use Value: 1.0 mΩ R_DS(on) cuts conduction loss by 42% vs. comparable 2.2 mΩ devices, reducing thermal design margin and enabling smaller heatsinks.

Use Scenario: Primary-side synchronous rectifier in 48 V–12 V isolated buck-boost converters for telecom power shelves.

IC Role / Device Role / Timing Role: Low-side switch in synchronous rectification topology, driven by adaptive gate controller with 70 nC Q_g demand.

Use Value: 25 pF C_rss minimizes Miller-induced shoot-through risk, supporting stable 300 kHz operation without complex gate drive tuning.

Power Tools & E-Mobility Controllers

Uninterruptible Power Supplies (UPS)

Use Scenario: High-current H-bridge in cordless drill battery packs (24–40 V nominal) with dynamic load transients exceeding 500 A.

IC Role / Device Role / Timing Role: Bidirectional power switch managing motor direction and regenerative braking, subjected to repetitive avalanche stress.

Use Value: 420 mJ E_AS withstands repeated inductive kickback during stall conditions, eliminating need for external TVS clamping.

Use Scenario: Static switch and inverter stage in online double-conversion UPS systems with 36 V–48 V battery backup.

IC Role / Device Role / Timing Role: Output stage switch handling 200 A continuous load with zero-voltage switching (ZVS) assistance.

Use Value: 1700 pF C_oss enables predictable ZVS transition timing, reducing switching loss by 28% compared to devices with >2500 pF C_oss.

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 IPP026N04L	R_DS(on) = 2.6 mΩ (higher), Q_g = 52 nC (lower), TO-220FP package	Limited to ≤150 A due to package thermal resistance (R_thJC = 1.2 °C/W); requires heatsink mounting.	Select when board space allows through-hole mounting and lower gate drive power is prioritized over conduction loss.
Vishay SiR626DP	R_DS(on) = 1.2 mΩ (slightly higher), Q_g = 75 nC (slightly higher), PowerPAK 5x6 package	Same footprint but 10% higher R_DS(on) increases conduction loss by ~20 W at 300 A; no avalanche rating specified.	Select when supply chain diversification is required and 1.2 mΩ on-resistance is acceptable for thermal budget.

Compared with IPP026N04L and SiR626DP, STL300N4LF8 offers the lowest R_DS(on) and highest avalanche ruggedness in a surface-mount package, making it optimal for space-constrained, high-current industrial inverters where thermal density and transient reliability are critical.

Availability

STL300N4LF8 is available at Aetrix Electronics and suitable for industrial motor drives, high-efficiency DC-DC converters, and uninterruptible power supplies requiring stable component supply and long-term production continuity.

Supply support for STL300N4LF8 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 power management, microcontrollers, sensors, and automotive ICs with vertical manufacturing capabilities.

The STL300N4LF8 belongs to ST's STripFET F8 Power MOSFET product line, engineered specifically for high-current, high-efficiency industrial power conversion where low R_DS(on), fast switching, and ruggedness are mandatory.

FAQ

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

The STL300N4LF8 supports 215 A continuous drain current at T_C = 100 °C, as specified in Table 1 of DS14228 Rev 2. This value reflects thermal derating due to reduced heat transfer efficiency at elevated case temperatures and must be validated against actual PCB copper area and airflow conditions.

Does this MOSFET require a gate resistor for safe operation?

A gate resistor is recommended to control dV/dt and prevent oscillation during switching. With Q_g = 70 nC and typical driver output impedance, a 4.7 Ω resistor limits peak gate current to ~2.1 A and achieves ~14 ns turn-on delay and ~55 ns turn-off delay per Table 5, ensuring stable hard-switching behavior.

Can STL300N4LF8 be used in synchronous rectification topologies?

Yes - its low R_DS(on) (1.0 mΩ), low C_rss (25 pF), and logic-level gate threshold make it suitable for synchronous rectification in DC-DC converters up to 300 kHz. The integrated body diode's 70 nC Q_rr and 60 ns t_rr further support zero-voltage switching transitions.

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

Yes - the STL300N4LF8 PowerFLAT 5x6 package meets RoHS Directive 2011/65/EU and is lead-free, halogen-free, and compliant with ST's ECOPACK2 environmental standard. Full compliance documentation is available in the device's package information section of DS14228.

STL300N4LF8 Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: STripFET™ F8

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:: 120A (Tc)

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

Rds On (Max) @ Id, Vgs:: 1mOhm @ 60A, 10V

Vgs(th) (Max) @ Id:: 2V @ 250µA

Gate Charge (Qg) (Max) @ Vgs:: 70 nC @ 10 V

Vgs (Max):: ±20V

Input Capacitance (Ciss) (Max) @ Vds:: 5400 pF @ 25 V

FET Feature:: -

Power Dissipation (Max):: 167W (Tc)

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: PowerFlat™ (5x6)

STL300N4LF8 FAQ

1.How can I place an order for STL300N4LF8 through Aetrix?

Please submit a Request for Quotation (RFQ) for STL300N4LF8 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 STL300N4LF8 reliable?

The price and inventory of STL300N4LF8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STL300N4LF8 is usually 5 days.

3.What payment methods are accepted for STL300N4LF8?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STL300N4LF8 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for STL300N4LF8?

STL300N4LF8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your STL300N4LF8 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 STL300N4LF8?

For technical support, including STL300N4LF8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STL300N4LF8 requirements.

6.How does Aetrix verify that STL300N4LF8 is sourced from the original manufacturer or authorized distributors?

All STL300N4LF8 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 STL300N4LF8 meets industry standards.

7.What is the process for return or replacement of STL300N4LF8?

All STL300N4LF8 units undergo pre-shipment inspection (PSI). If there is an issue with STL300N4LF8, 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 STL300N4LF8 part is unused and in its original packaging.

Return procedure for STL300N4LF8:

1.Submit a request within 90 days.

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

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