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

STMicroelectronics STL90N3LLH6

Name: STL90N3LLH6
Brand: STMicroelectronics
SKU: STL90N3LLH6
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: STL90N3LLH6

Manufacturer:: STMicroelectronics

Category:: FETs, MOSFETs

Package:: 8-PowerVDFN

Datasheet:: STL90N3LLH6.pdf

Description:: MOSFET N-CH 30V 90A POWERFLAT

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Product details

Overview

STL90N3LLH6 from STMicroelectronics is an N-channel 30 V Power MOSFET in PowerFLAT™ 5x6 package, featuring 0.0038 Ω typ. R_DS(on) at V_GS = 10 V, 24 A continuous drain current (T_pcb = 25 °C), and 90 mJ single-pulse avalanche energy - optimized for high-efficiency DC-DC converters and motor control switches in industrial power supplies.

For engineers reviewing the STL90N3LLH6 datasheet, STL90N3LLH6 pinout, STL90N3LLH6 application, or STL90N3LLH6 equivalent, key selection criteria include low gate charge (17 nC), ultra-low on-resistance, high pulsed current capability (96 A), thermal resistance to PCB (31.3 °C/W), and avalanche ruggedness - critical for compact, high-reliability switching designs.

Technical Context

This device implements ST's 6th-generation STripFET™ VI DeepGATE™ technology with a redesigned gate structure, enabling industry-leading R_DS(on) × Q_g performance. It operates with ±20 V gate-source voltage rating and supports fast switching via low C_iss (1690 pF typ.) and C_rss (176 pF typ.).

The MOSFET delivers robust unclamped inductive switching behavior with 90 mJ E_AS at T_J = 25 °C and ID = 12 A, and integrates a source-drain diode with 24 A continuous forward current and 24 ns reverse recovery time - suitable for synchronous rectification and freewheeling paths.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	30 V - maximum blocking voltage compatible with 24 V industrial bus systems and 12 V automotive-derived rails.
R_DS(on) typ.	0.0038 Ω @ V_GS = 10 V, I_D = 12 A - enables <1 W conduction loss at 24 A, reducing heatsink requirements.
Q_g	17 nC @ V_DD = 15 V, I_D = 24 A - minimizes gate drive power and allows use of low-current drivers in high-frequency SMPS.
E_AS	90 mJ - provides margin against inductive energy spikes in motor drives and relay snubbing without external clamping.
R_thj-pcb	31.3 °C/W - defined for FR-4 board (1 in², 2 oz Cu), enabling accurate thermal modeling for surface-mount power stage layout.
t_r/t_f	30 ns / 12 ns - supports >1 MHz switching in resonant topologies while maintaining low EMI generation.

Pinout & Package

STL90N3LLH6 uses the PowerFLAT™ 5x6 (Type C-B) thermally enhanced surface-mount package with exposed drain pad for optimal PCB heat dissipation. The package measures 5.0 mm × 6.0 mm × 0.83 mm and features a single-row 8-terminal configuration.

Pin/Terminal	Circuit Role	Design Meaning
1, 2, 3	Source	Common source connection; electrically tied to exposed pad ground plane for low-inductance return path.
4	Gate	Single gate input terminal; requires ≤±20 V drive; low input capacitance (1.7 Ω typical gate resistance) eases driver selection.
5, 6, 7, 8	Drain	High-current drain terminals; connected directly to large copper pour for thermal and current handling - not signal routing.

Key Features

Feature	Design Value
Ultra-low R_DS(on) × Q_g	Industry benchmark figure-of-merit enabling high efficiency at 500 kHz–1 MHz switching frequencies.
High avalanche ruggedness	90 mJ E_AS ensures reliable operation under unclamped inductive load transients without derating.
Low gate drive power loss	17 nC total gate charge reduces driver IC power consumption and simplifies gate loop layout.
Thermally optimized package	PowerFLAT™ 5x6 exposes drain on bottom side, achieving 31.3 °C/W R_thj-pcb without heatsink.

Applications

DC-DC Converter Primary Switch

BLDC Motor Phase Leg

Use Scenario: High-density 12 V–24 V input buck converter delivering up to 30 A output in telecom power modules.

IC Role / Device Role / Timing Role: Main high-side switching element operating at 600 kHz with synchronous rectification.

Use Value: 0.0038 Ω R_DS(on) limits conduction loss to <2.2 W at full load, enabling natural convection cooling.

Use Scenario: 3-phase inverter driving 200 W brushless DC fan in HVAC control unit.

IC Role / Device Role / Timing Role: Low-side switch in 6-step commutation with 20 kHz PWM modulation.

Use Value: 24 ns t_rr and 16.8 nC Q_rr minimize body diode losses during dead-time conduction.

Industrial Solenoid Driver

Hot-Swap OR-ing FET

Use Scenario: 24 V solenoid actuator control in programmable logic controller (PLC) output module.

IC Role / Device Role / Timing Role: Low-side switch with integrated flyback energy absorption via avalanche capability.

Use Value: 90 mJ E_AS safely absorbs inductive kickback without external TVS, reducing BOM count.

Use Scenario: Redundant 12 V power rail OR-ing in network switch backplane with hot-plug support.

IC Role / Device Role / Timing Role: Reverse-polarity protected, low-R_DS(on) pass transistor controlled by ideal diode controller.

Use Value: 0.0045 Ω max. R_DS(on) limits voltage drop to <110 mV at 24 A, preserving system voltage margin.

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
IRF7470PBF	R_DS(on) = 0.0042 Ω @ 10 V, Q_g = 22 nC, PowerSO-8 package	Higher gate charge increases driver loss; larger footprint reduces power density	Preferred where legacy SO-8 footprint compatibility is required over thermal performance
SUP60N03-04-E3	R_DS(on) = 0.0040 Ω @ 10 V, Q_g = 20 nC, TO-252 package	TO-252 requires through-hole or large pad; higher R_thj-amb (60 °C/W) limits power handling	Chosen when manual assembly or high-voltage creepage (>3 mm) is mandatory

Compared with IRF7470PBF and SUP60N03-04-E3, STL90N3LLH6 delivers superior power density and thermal efficiency due to its PowerFLAT™ 5x6 package and lowest R_DS(on) × Q_g in class - making it optimal for space-constrained, high-frequency industrial power stages.

Availability

STL90N3LLH6 is available at Aetrix Electronics and suitable for DC-DC converters, BLDC motor drives, industrial solenoid controls, and hot-swap OR-ing circuits requiring stable component supply across multi-year production cycles.

Supply support for STL90N3LLH6 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 industrial, automotive, and consumer markets.

This MOSFET belongs to ST's STripFET™ VI DeepGATE™ power transistor family, engineered specifically for high-efficiency, high-power-density switching applications in industrial automation and embedded power systems.

FAQ

What is the maximum continuous drain current for STL90N3LLH6 at PCB temperature of 70 °C?

The maximum continuous drain current is 18 A when mounted on an FR-4 PCB with 1 in² copper area and ambient temperature of 70 °C. This value is derived from R_thj-pcb = 31.3 °C/W and T_J(max) = 150 °C, ensuring safe junction temperature under sustained load conditions without heatsink.

Does STL90N3LLH6 support 4.5 V gate drive in logic-level applications?

Yes - R_DS(on) is specified at 0.0057 Ω (typ.) and 0.0073 Ω (max.) with V_GS = 4.5 V and I_D = 12 A, confirming full enhancement at standard 3.3 V/5 V logic levels. Gate threshold voltage ranges from 1.0 V to 2.5 V, ensuring reliable turn-on with standard microcontroller GPIOs.

How does the PowerFLAT™ 5x6 package improve thermal performance versus SO-8?

PowerFLAT™ 5x6 achieves R_thj-pcb = 31.3 °C/W on FR-4 (1 in², 2 oz Cu), compared to ~60–75 °C/W for SO-8 equivalents. Its exposed drain pad provides direct thermal path to PCB copper, enabling 2× higher power dissipation at same temperature rise - critical for fanless industrial enclosures.

Is STL90N3LLH6 suitable for automotive applications per AEC-Q101?

No - STL90N3LLH6 is not AEC-Q101 qualified and is intended for industrial and commercial applications only. ST specifies its operating junction temperature range as –55 °C to 150 °C, but automotive qualification requires additional stress testing, traceability, and failure rate validation not performed for this part.

STL90N3LLH6 Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: DeepGATE™, STripFET™ VI

Package/Case:: 8-PowerVDFN

Packaging:: Tape & Reel (TR)

Product Status:: Active

FET Type:: N-Channel

Technology:: MOSFET (Metal Oxide)

Drain to Source Voltage (Vdss):: 30 V

Current - Continuous Drain (Id) @ 25°C:: 90A (Tc)

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

Rds On (Max) @ Id, Vgs:: 4.5mOhm @ 12A, 10V

Vgs(th) (Max) @ Id:: 1V @ 250µA

Gate Charge (Qg) (Max) @ Vgs:: 17 nC @ 4.5 V

Vgs (Max):: ±20V

Input Capacitance (Ciss) (Max) @ Vds:: 1690 pF @ 25 V

FET Feature:: -

Power Dissipation (Max):: 60W (Tc)

Operating Temperature:: -55°C ~ 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: PowerFlat™ (5x6)

STL90N3LLH6 FAQ

1.How can I place an order for STL90N3LLH6 through Aetrix?

Please submit a Request for Quotation (RFQ) for STL90N3LLH6 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 STL90N3LLH6 reliable?

The price and inventory of STL90N3LLH6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STL90N3LLH6 is usually 5 days.

3.What payment methods are accepted for STL90N3LLH6?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STL90N3LLH6 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for STL90N3LLH6?

STL90N3LLH6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your STL90N3LLH6 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 STL90N3LLH6?

For technical support, including STL90N3LLH6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STL90N3LLH6 requirements.

6.How does Aetrix verify that STL90N3LLH6 is sourced from the original manufacturer or authorized distributors?

All STL90N3LLH6 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 STL90N3LLH6 meets industry standards.

7.What is the process for return or replacement of STL90N3LLH6?

All STL90N3LLH6 units undergo pre-shipment inspection (PSI). If there is an issue with STL90N3LLH6, 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 STL90N3LLH6 part is unused and in its original packaging.

Return procedure for STL90N3LLH6:

1.Submit a request within 90 days.

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

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