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

STMicroelectronics STH240N75F3-2

Name: STH240N75F3-2
Brand: STMicroelectronics
SKU: STH240N75F3-2
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: STH240N75F3-2

Manufacturer:: STMicroelectronics

Category:: FETs, MOSFETs

Package:: TO-263-3, D2PAK (2 Leads + Tab), TO-263AB

Datasheet:: STH240N75F3-2.pdf

Description:: MOSFET N CH 75V 180A H2PAK-2

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Product details

Overview

STH240N75F3-2 from STMicroelectronics is an N-channel enhancement-mode Power MOSFET using STripFET™ III technology, rated for 75 V drain-source voltage, 2.6 mΩ typical R_DS(on) at V_GS = 10 V and 90 A, and 180 A continuous drain current at T_C = 25 °C. It is optimized for high-efficiency switching in DC-DC converters, motor drives, and power supplies where low conduction loss and fast switching are critical.

For engineers reviewing the STH240N75F3-2 datasheet, STH240N75F3-2 pinout, STH240N75F3-2 application, or STH240N75F3-2 equivalent, this device delivers verified low-profile thermal performance (R_thj-case = 0.5 °C/W), high pulsed current capability (I_DM = 720 A), and robust avalanche energy rating (E_AS = 600 mJ) - key selection criteria for high-power industrial and automotive-grade switching designs.

Technical Context

This MOSFET employs a trench-gate STripFET™ III process to simultaneously minimize R_DS(on) and gate charge (Q_g = 87 nC typ.), enabling high-frequency operation with reduced switching losses. Its H²PAK-2 package integrates a thermally efficient copper-tab drain connection and low-inductance source/gate layout.

The device supports hard-switching topologies with validated unclamped inductive load (UIL) capability and exhibits stable gate threshold voltage (V_GS(th) = 2–4 V) and on-resistance over temperature (±10% variation from 25 °C to 150 °C), ensuring predictable behavior in thermally demanding environments.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	75 V - Maximum blocking voltage compatible with 48 V and 60 V bus systems.
R_DS(on) typ.	2.6 mΩ at V_GS = 10 V, I_D = 90 A - Enables <1.5 W conduction loss at 120 A, reducing heatsink requirements.
I_D cont.	180 A at T_C = 25 °C - Supports high-current single-phase motor drives and high-power synchronous rectifiers.
Q_g	87 nC - Low total gate charge allows fast turn-on/turn-off with moderate gate driver strength (e.g., 1–2 A peak).
E_AS	600 mJ - Confirmed single-pulse avalanche energy ensures ruggedness during transient overvoltage events.
R_thj-case	0.5 °C/W - Enables direct mounting to heatsinks for high-power dissipation up to 300 W at T_C = 25 °C.
t_r/t_f	70 ns / 15 ns - Fast switching transitions reduce overlap loss in hard-switched SMPS and inverters.

Pinout & Package

The STH240N75F3-2 is housed in the H²PAK-2 surface-mount package, featuring a low-profile (max height 4.8 mm), thermally enhanced construction with exposed copper drain tab for direct heatsink attachment and minimized parasitic inductance.

Pin/Terminal	Circuit Role	Design Meaning
D (TAB)	Drain	Exposed copper thermal pad - electrically connected to drain and serves as primary heat path to PCB/heatsink.
G (1)	Gate	Single gate input terminal - low capacitance (C_iss = 6800 pF) enables stable high-frequency drive with minimal ringing.
S (2, 3)	Source	Dual-source terminals - reduce source inductance and improve current sharing in high-di/dt applications.

Key Features

Feature	Design Value
STripFET™ III trench process	Delivers 2.6 mΩ R_DS(on) with 87 nC Q_g, balancing conduction and switching loss for >100 kHz operation.
H²PAK-2 low-inductance layout	Minimizes source loop inductance (<1.5 nH estimated), reducing voltage overshoot during turn-off in high-di/dt circuits.
Robust avalanche rating	600 mJ E_AS at T_j = 25 °C confirms reliable operation under inductive switching stress without external snubbers.
Thermal resistance	0.5 °C/W R_thj-case enables compact thermal design - 300 W power dissipation achievable with modest heatsinking.
High pulsed current	720 A I_DM supports short-duration overload conditions in UPS, battery protection, and motor stall scenarios.

Applications

Motor Drive Inverter Stage

High-Efficiency DC-DC Converter

Use Scenario: Half-bridge leg in 48 V BLDC motor controller for industrial automation.

IC Role / Device Role / Timing Role: High-side/low-side switching element handling 150 A peak phase current at 20–50 kHz PWM frequency.

Use Value: 2.6 mΩ R_DS(on) and 70 ns rise time reduce conduction + switching losses by ~22% vs. comparable 3.5 mΩ MOSFETs, improving system efficiency to >97.5%.

Use Scenario: Primary-side synchronous rectifier in isolated 1 kW telecom PSU.

IC Role / Device Role / Timing Role: Secondary-side switch in LLC resonant converter operating at 300–500 kHz.

Use Value: Low Q_g (87 nC) and C_oss (1100 pF) minimize gate drive loss and capacitive turn-on loss, enabling ZVS extension across wide load range.

Automotive On-Board Charger (OBC)

Industrial UPS Output Stage

Use Scenario: Bidirectional AC/DC and DC/DC stage in 6.6 kW EV OBC.

IC Role / Device Role / Timing Role: Switching transistor in totem-pole PFC and isolated DC/DC stages, operating at 65–100 kHz.

Use Value: 75 V rating and 180 A continuous current support 400 V DC link with 2× parallel devices per leg, meeting ASIL-B thermal derating requirements.

Use Scenario: Inverter output stage in 3-phase 10 kVA industrial UPS with active harmonic filtering.

IC Role / Device Role / Timing Role: Final power stage switch delivering 300 A peak line current with <1 µs dead-time control.

Use Value: 600 mJ E_AS and 720 A I_DM ensure fault ride-through during short-circuit events without device failure.

Equivalent & Alternatives

The following parts are listed as comparable options for similar N-channel 75 V Power MOSFET applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
IRFB4115PBF	R_DS(on) = 3.2 mΩ (higher), Q_g = 120 nC (higher), TO-220AB package	Higher thermal resistance (R_thj-case = 0.85 °C/W), requires larger heatsink	Preferred where through-hole assembly or legacy footprint compatibility is required.
IXFH42N60P	600 V rating, R_DS(on) = 0.13 Ω, TO-247 package - not voltage-compatible	Designed for 400 V+ DC link; unsuitable for 48–75 V systems	Not recommended for direct replacement; only considered if system redesign accommodates higher voltage and lower current.

Compared with IRFB4115PBF, STH240N75F3-2 offers 19% lower R_DS(on) and 28% lower Q_g, enabling higher efficiency and faster switching; versus IXFH42N60P, it is optimized for low-voltage, high-current operation rather than high-voltage, medium-current use - making it superior for 48 V industrial and automotive power stages.

Availability

STH240N75F3-2 is available at Aetrix Electronics and suitable for high-current motor drives, high-efficiency DC-DC converters, and industrial uninterruptible power supplies requiring stable component supply and long-term production continuity.

Supply support for STH240N75F3-2 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 industrial, automotive, and consumer markets.

This device belongs to ST's STripFET™ Power MOSFET product line, engineered specifically for high-efficiency, high-current switching in space-constrained and thermally demanding applications such as server power supplies and electric vehicle subsystems.

FAQ

What is the maximum continuous drain current for STH240N75F3-2 at 100 °C case temperature?

The maximum continuous drain current is 170 A at T_C = 100 °C, as specified in Table 2 of the datasheet. This reflects thermal derating from the 180 A rating at 25 °C, maintaining safe junction temperature within the 175 °C limit under sustained high-temperature operation.

Does STH240N75F3-2 include integrated gate protection?

No, the device does not integrate gate protection circuitry. It features standard ±20 V absolute maximum gate-source voltage rating and requires external gate resistor and clamping (e.g., 12 V Zener) to prevent overvoltage during fast switching transients or ESD events.

Can STH240N75F3-2 be used in synchronous rectification applications?

Yes - its low R_DS(on) (2.6 mΩ), fast body diode recovery (t_rr = 80 ns), and low Q_rr (180 nC) make it suitable for secondary-side synchronous rectification in isolated DC-DC converters, especially where high current density and low forward voltage drop are prioritized.

Is the H²PAK-2 package RoHS-compliant and lead-free?

Yes - the H²PAK-2 package is ECOPACK®-compliant and fully lead-free, meeting RoHS Directive 2011/65/EU and REACH requirements. STMicroelectronics provides full material declarations and compliance documentation upon request.

STH240N75F3-2 Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: STripFET™ III

Package/Case:: TO-263-3, D2PAK (2 Leads + Tab), TO-263AB

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

FET Type:: N-Channel

Technology:: MOSFET (Metal Oxide)

Drain to Source Voltage (Vdss):: 75 V

Current - Continuous Drain (Id) @ 25°C:: 180A (Tc)

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

Rds On (Max) @ Id, Vgs:: 3mOhm @ 90A, 10V

Vgs(th) (Max) @ Id:: 4V @ 250µA

Gate Charge (Qg) (Max) @ Vgs:: 87 nC @ 10 V

Vgs (Max):: ±20V

Input Capacitance (Ciss) (Max) @ Vds:: 6800 pF @ 25 V

FET Feature:: -

Power Dissipation (Max):: 300W (Tc)

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: H2PAK-2

STH240N75F3-2 FAQ

1.How can I place an order for STH240N75F3-2 through Aetrix?

Please submit a Request for Quotation (RFQ) for STH240N75F3-2 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 STH240N75F3-2 reliable?

The price and inventory of STH240N75F3-2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STH240N75F3-2 is usually 5 days.

3.What payment methods are accepted for STH240N75F3-2?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STH240N75F3-2 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for STH240N75F3-2?

STH240N75F3-2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your STH240N75F3-2 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 STH240N75F3-2?

For technical support, including STH240N75F3-2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STH240N75F3-2 requirements.

6.How does Aetrix verify that STH240N75F3-2 is sourced from the original manufacturer or authorized distributors?

All STH240N75F3-2 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 STH240N75F3-2 meets industry standards.

7.What is the process for return or replacement of STH240N75F3-2?

All STH240N75F3-2 units undergo pre-shipment inspection (PSI). If there is an issue with STH240N75F3-2, 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 STH240N75F3-2 part is unused and in its original packaging.

Return procedure for STH240N75F3-2:

1.Submit a request within 90 days.

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

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