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

STMicroelectronics STH145N8F7-2AG

Name: STH145N8F7-2AG
Brand: STMicroelectronics
SKU: STH145N8F7-2AG
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: STH145N8F7-2AG

Manufacturer:: STMicroelectronics

Category:: FETs, MOSFETs

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

Datasheet:: STH145N8F7-2AG.pdf

Description:: MOSFET N-CH 80V 90A H2PAK-2

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Product details

Overview

STH145N8F7-2AG from STMicroelectronics is an automotive-grade N-channel Power MOSFET with 80 V V_DS, 3.3 mΩ typ. R_DS(on) at V_GS = 10 V, 90 A continuous drain current, and H²PAK-2 package. It employs STripFET™ F7 trench-gate technology for low conduction loss and fast switching in high-current DC-DC and motor control stages.

For engineers reviewing the STH145N8F7-2AG datasheet, STH145N8F7-2AG pinout, STH145N8F7-2AG application, or STH145N8F7-2AG equivalent, key selection criteria include R_DS(on) vs. temperature stability, avalanche energy rating (515 mJ), Crss/Ciss ratio for EMI robustness, and AEC-Q101 qualification for under-hood use.

Technical Context

This device uses STripFET™ F7's enhanced trench gate structure to simultaneously minimize R_DS(on) (3.3 mΩ typ.) and gate charge (Q_g = 96 nC), enabling high-efficiency synchronous rectification and PWM-driven loads. Its low Crss/Ciss ratio (105/6340 pF) suppresses Miller-induced turn-on during high-dV/dt transitions.

The H²PAK-2 package delivers 0.75 °C/W junction-to-case thermal resistance and supports 200 W total dissipation at T_C = 25 °C. Avalanche ruggedness is validated at 515 mJ (T_j = 25 °C, I_D = 18.5 A, V_DD = 50 V), critical for inductive load switching without external snubbers.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	80 V - Supports 48 V automotive systems with 20 % margin for load dump transients
R_DS(on) max	4 mΩ - Limits conduction loss to ≤ 32.4 W at 90 A, enabling compact heatsink design
I_D cont @ T_C=100°C	90 A - Maintains full rated current up to engine bay ambient temperatures
E_AS	515 mJ - Withstands unclamped inductive switching events without failure
C_rss/C_iss	105/6340 pF - Low ratio improves noise immunity and reduces gate drive power
Q_g	96 nC - Enables <100 ns switching times with standard 4.7 Ω gate resistor
T_j range	−55 to +175 °C - Qualified for extended automotive temperature operation

Pinout & Package

H²PAK-2 is a surface-mount, dual-side cooling package with isolated drain tab and integrated source/ground terminals. It features a 15.8 mm × 10.4 mm footprint, 1.37 mm typical height, and FR-4 board thermal resistance of 35 °C/W (1 inch², 2 oz Cu).

Pin/Terminal	Circuit Role	Design Meaning
Drain (Tab)	High-current power return path	Exposed copper tab electrically connected to drain; requires insulated mounting for PCB ground isolation
Source (S1–S3)	Power return and gate reference	Three parallel source pins reduce bond-wire inductance and improve current sharing in high-frequency PWM
Gate (G)	Switching control input	Single gate pin with low-impedance path; layout must minimize loop inductance to prevent oscillation

Key Features

Feature	Design Value
AEC-Q101 qualified	Validated for automotive under-hood applications including engine control and transmission modules
Low R_DS(on) × Q_g FoM	307 mΩ·nC - Optimized trade-off between conduction and switching losses in 10–100 kHz converters
High avalanche energy	515 mJ single-pulse - Eliminates need for external clamping diodes in solenoid drivers
Low Crss/Ciss ratio	1.66 % - Reduces risk of false turn-on during high-speed bridge commutation
Enhanced trench gate	Reduces gate charge by 22 % vs. prior F6 generation - lowers driver IC stress and power consumption

Applications

Engine Start-Stop System

48 V DC-DC Converter

Use Scenario: High-current battery disconnect and restart sequencing in micro-hybrid vehicles.

IC Role / Device Role / Timing Role: Main power switch controlling 48 V starter-generator interface.

Use Value: 90 A continuous rating and 515 mJ avalanche capability ensure reliable engagement under cranking surge conditions.

Use Scenario: Primary-side synchronous rectifier in bidirectional 48 V–12 V buck-boost converter.

IC Role / Device Role / Timing Role: High-side N-channel switch operating at 50–100 kHz PWM frequency.

Use Value: 3.3 mΩ R_DS(on) minimizes conduction loss while low Q_g enables efficient gate driving with minimal dead-time penalty.

Electric Power Steering (EPS)

Automotive HVAC Blower

Use Scenario: Three-phase inverter leg for brushless DC motor control in steering assist units.

IC Role / Device Role / Timing Role: Low-side switch in 60 V-rated inverter stage with fast fall time (44 ns).

Use Value: 175 °C max junction temperature and −55 °C min storage rating support operation across full vehicle lifecycle extremes.

Use Scenario: PWM-controlled fan driver in climate control system with overcurrent and thermal protection.

IC Role / Device Role / Timing Role: Single-ended switch regulating airflow via duty-cycle modulation.

Use Value: Integrated body diode with 1.2 V forward drop (I_SD = 90 A) eliminates need for external freewheeling diode.

Equivalent & Alternatives

The following parts are listed as comparable options for similar N-channel 80 V power MOSFET applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
Infineon IPP036N08N	R_DS(on) = 3.6 mΩ (typ.), Q_g = 102 nC, same H²PAK-2 footprint	Slightly higher gate charge increases driver loss; identical avalanche rating	Preferred where gate drive voltage headroom exceeds 12 V and layout allows minor Q_g increase
ON Semiconductor NTMFS5C428NT1G	R_DS(on) = 4.2 mΩ (max.), Q_g = 85 nC, SO-8FL package	Lower thermal performance (R_thj-c = 1.5 °C/W), not AEC-Q101 qualified	Only suitable for non-automotive 48 V systems with derated current (≤ 60 A)

Compared with IPP036N08N and NTMFS5C428NT1G, STH145N8F7-2AG provides superior R_DS(on) × Q_g figure of merit and guaranteed AEC-Q101 compliance-making it the only choice for production automotive inverters requiring both efficiency and qualification traceability.

Availability

STH145N8F7-2AG is available at Aetrix Electronics and suitable for engine start-stop systems, 48 V DC-DC converters, and electric power steering modules requiring stable component supply across multi-year automotive production cycles.

Supply support for STH145N8F7-2AG 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, MCU, power, and sensor solutions 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 48 V mild-hybrid architectures and EPS systems.

FAQ

What is the maximum allowable gate-source voltage for STH145N8F7-2AG?

The absolute maximum V_GS is ±20 V per the datasheet. Operation beyond ±15 V risks oxide breakdown, especially at elevated temperatures. For robust design, gate drive should be clamped to +12 V/−5 V using Zener diodes or dedicated gate drivers with rail-limited outputs.

Does STH145N8F7-2AG include an integrated body diode, and what are its characteristics?

Yes-it features a monolithic source-drain diode with 90 A continuous forward current rating and 1.2 V typical forward voltage at 90 A and T_j = 25 °C. Reverse recovery charge is 92 nC, and trr is 58 ns at I_SD = 64 A, di/dt = 100 A/µs, and T_j = 150 °C-suitable for hard-switched topologies with controlled commutation.

How does the H²PAK-2 package enable thermal management in automotive environments?

H²PAK-2 provides dual-side cooling: the exposed drain tab conducts heat directly to heatsinks or chassis, while source pins transfer heat through PCB copper. Its 0.75 °C/W R_thj-case and 35 °C/W R_thj-pcb (1 inch², 2 oz Cu) allow sustained 90 A operation without forced air, meeting under-hood thermal constraints up to 105 °C ambient.

Is STH145N8F7-2AG suitable for paralleling multiple devices to increase current handling?

Yes-the device exhibits positive R_DS(on) temperature coefficient above 25 °C, ensuring inherent current sharing when paralleled. Layout must balance gate loop inductance and thermal paths; ST recommends symmetrical routing, matched gate resistors (≤ 4.7 Ω), and shared thermal interface to avoid thermal runaway.

STH145N8F7-2AG Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: STripFET™ F7

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

Packaging:: Tape & Reel (TR)

Product Status:: Active

FET Type:: N-Channel

Technology:: MOSFET (Metal Oxide)

Drain to Source Voltage (Vdss):: 80 V

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

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

Rds On (Max) @ Id, Vgs:: 4mOhm @ 45A, 10V

Vgs(th) (Max) @ Id:: 4.5V @ 250µA

Gate Charge (Qg) (Max) @ Vgs:: 96 nC @ 10 V

Vgs (Max):: ±20V

Input Capacitance (Ciss) (Max) @ Vds:: 6340 pF @ 40 V

FET Feature:: -

Power Dissipation (Max):: 200W (Tc)

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

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Surface Mount

Supplier Device Package:: H2PAK-2

STH145N8F7-2AG FAQ

1.How can I place an order for STH145N8F7-2AG through Aetrix?

Please submit a Request for Quotation (RFQ) for STH145N8F7-2AG 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 STH145N8F7-2AG reliable?

The price and inventory of STH145N8F7-2AG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STH145N8F7-2AG is usually 5 days.

3.What payment methods are accepted for STH145N8F7-2AG?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STH145N8F7-2AG transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for STH145N8F7-2AG?

STH145N8F7-2AG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your STH145N8F7-2AG 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 STH145N8F7-2AG?

For technical support, including STH145N8F7-2AG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STH145N8F7-2AG requirements.

6.How does Aetrix verify that STH145N8F7-2AG is sourced from the original manufacturer or authorized distributors?

All STH145N8F7-2AG 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 STH145N8F7-2AG meets industry standards.

7.What is the process for return or replacement of STH145N8F7-2AG?

All STH145N8F7-2AG units undergo pre-shipment inspection (PSI). If there is an issue with STH145N8F7-2AG, 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 STH145N8F7-2AG part is unused and in its original packaging.

Return procedure for STH145N8F7-2AG:

1.Submit a request within 90 days.

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

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