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

STMicroelectronics STP140N4F6

Name: STP140N4F6
Brand: STMicroelectronics
SKU: STP140N4F6
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: STP140N4F6

Manufacturer:: STMicroelectronics

Category:: FETs, MOSFETs

Package:: TO-220-3

Datasheet:: STP140N4F6.pdf

Description:: MOSFET N-CHANNEL 40V 80A TO220

Quantity:: RFQ Add To RFQ list

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Inventory:3,759

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Product details

Overview

STP140N4F6 from STMicroelectronics is an N-channel enhancement-mode Power MOSFET using STripFET™ F6 trench-gate technology, designed for high-current switching in DC-DC converters and motor drives. It delivers 40 V V_DS, 3.8 mΩ typ. R_DS(on) at V_GS = 10 V, 80 A continuous drain current, 168 W power dissipation, and 240 mJ single-pulse avalanche energy - enabling robust operation in power tools and industrial motor control.

For engineers reviewing the STP140N4F6 datasheet, STP140N4F6 pinout, STP140N4F6 application, or STP140N4F6 equivalent, key selection criteria include its low gate charge (70 nC), fast switching (20 ns t_d(on), 41 ns t_rr), TO-220 thermal resistance (0.89 °C/W), and source-drain diode forward voltage (1.3 V at 40 A), critical for synchronous rectification and inductive load handling.

Technical Context

This MOSFET employs a trench-gate STripFET™ F6 structure to minimize R_DS(on) and gate charge simultaneously. Its 4.3 mΩ max. on-resistance at 80 A and 10 V gate drive enables high-efficiency conduction, while the 310 pF Crss and 70 nC Q_g support fast, low-loss switching in hard-switched topologies.

The device features rated avalanche capability (40 A I_AR, 240 mJ E_AS) and a 1.3 V source-drain diode forward voltage at 40 A, making it suitable for unclamped inductive switching and freewheeling paths without external diodes in brushed DC motor drivers.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	40 V - Maximum blocking voltage for 12–24 V system-level power stages
R_DS(on) typ.	3.8 mΩ at V_GS = 10 V, ID = 40 A - Enables <1.5 W conduction loss at 80 A in TO-220 package
I_D cont.	80 A at T_case = 25 °C - Supports high-current motor phase switches and battery protection circuits
Q_g	70 nC - Reduces gate driver power demand and enables 100+ kHz PWM operation with low drive loss
t_rr	41 ns - Limits reverse recovery losses during hard commutation in half-bridge configurations
E_AS	240 mJ - Withstands repetitive unclamped inductive energy spikes in power tool H-bridges
R_thj-case	0.89 °C/W - Allows 168 W dissipation with ≤150 °C junction rise above 25 °C heatsink

Pinout & Package

Delivered in TO-220 type A package (standard through-hole, isolated tab), with drain connected to the metal tab for direct heatsinking. Pin 1 = Gate, Pin 2 = Drain (tab), Pin 3 = Source.

Pin/Terminal	Circuit Role	Design Meaning
Gate (Pin 1)	Control terminal	Receives 10 V logic-level gate drive; 1.3 Ω intrinsic gate resistance limits ringing
Drain (Tab/Pin 2)	High-side power path	Electrically connected to metal tab; requires insulating washer when mounted to grounded heatsink
Source (Pin 3)	Reference node	Serves as return path for 80 A load current and gate drive reference; low-inductance layout essential

Key Features

Feature	Design Value
Very low R_DS(on)	3.8 mΩ typ. enables <1.2 W conduction loss at 60 A, reducing heatsink size in portable tools
Low gate charge	70 nC total charge allows efficient driving with low-power microcontroller GPIOs or small gate drivers
High avalanche ruggedness	240 mJ E_AS supports reliable operation under inductive turn-off stress without snubbers
Low gate drive power loss	20 nC Q_gs + 18 nC Q_gd minimizes Miller-induced shoot-through risk in bridge configurations

Applications

Power Tools Motor Control

DC-DC Synchronous Rectifier

Use Scenario: Brushed DC motor H-bridge in cordless drills and saws, operating from 18–24 V Li-ion packs with peak currents >60 A.

IC Role / Device Role / Timing Role: High-side and low-side switch in half-bridge topology; handles bidirectional current and regenerative braking.

Use Value: 3.8 mΩ R_DS(on) and 240 mJ avalanche rating prevent failure during stall and abrupt stop events.

Use Scenario: Secondary-side switch in 12 V → 5 V/3.3 V buck converter for industrial PLC I/O modules.

IC Role / Device Role / Timing Role: Synchronous rectifier replacing Schottky diode; driven with precise timing relative to primary switch.

Use Value: 1.3 V V_SD and 41 ns t_rr reduce conduction and recovery losses, improving efficiency by >3% vs. diode solution.

Battery Protection Circuit

Industrial Motor Starter

Use Scenario: Overcurrent and short-circuit protection in 24 V battery management systems for AGVs and material handling equipment.

IC Role / Device Role / Timing Role: Main power path switch; controlled by protection ASIC to disconnect load within microseconds of fault detection.

Use Value: 320 A pulsed drain current (I_DM) and 0.89 °C/W thermal resistance enable safe interruption of 200 A faults.

Use Scenario: Soft-start and run control for 0.5–1 kW induction motor drives in HVAC blowers and pumps.

IC Role / Device Role / Timing Role: Inverter leg switch in 3-phase inverter; operated with 6–20 kHz PWM and active thermal monitoring.

Use Value: Low Crss (310 pF) and fast tf (20 ns) minimize switching losses and EMI generation at high PWM frequencies.

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
IRF1404PBF	R_DS(on) = 4.0 mΩ max., Q_g = 131 nC, E_AS = 170 mJ	Higher gate drive loss and lower avalanche margin limit use in high-reliability power tools	Prefer STP140N4F6 where fast switching and ruggedness are prioritized over cost
IPP140N04LG	R_DS(on) = 3.3 mΩ typ., Q_g = 82 nC, TO-220FP package (non-isolated tab)	Lower on-resistance but higher gate charge and non-isolated tab require PCB isolation redesign	Choose IPP140N04LG only if board layout allows non-isolated mounting and extra 12 nC drive capacity exists

Compared with IRF1404PBF and IPP140N04LG, STP140N4F6 offers optimal balance of low R_DS(on), moderate Q_g, and industry-leading E_AS, making it preferred for thermally constrained, high-stress motor control where reliability trumps marginal R_DS(on) gain.

Availability

STP140N4F6 is available at Aetrix Electronics and suitable for power tools motor control, DC-DC synchronous rectification, and battery protection circuits requiring stable component supply and long-term industrial availability.

Supply support for STP140N4F6 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, analog, MCU, and sensor technologies for industrial, automotive, and consumer markets.

The STripFET™ F6 product line targets high-efficiency, high-reliability power switching applications - specifically engineered to reduce conduction and switching losses in motor drives, SMPS, and battery systems.

FAQ

Is STP140N4F6 suitable for 24 V automotive body electronics?

No - while rated for 40 V V_DS, STP140N4F6 is not AEC-Q101 qualified and lacks automotive-grade screening, transient immunity, and temperature range validation beyond industrial specs (−55 to 175 °C). It is intended for industrial and consumer power tools, not automotive ECUs or lighting.

What is the maximum recommended gate resistor for driving STP140N4F6 at 100 kHz?

A 4.7 Ω gate resistor is validated per datasheet Figure 14 and yields 20 ns t_d(on) and 58 ns t_d(off). For 100 kHz operation, keep RG ≤ 10 Ω to maintain <10% duty-cycle gate loss; lower values (2.2–4.7 Ω) improve switching speed but increase EMI risk in noisy environments.

Can STP140N4F6 replace STP130N04L in existing designs?

Yes - both are TO-220 N-channel 40 V MOSFETs, but STP140N4F6 has 3.8 mΩ R_DS(on) vs. 4.5 mΩ for STP130N04L and 70 nC Q_g vs. 62 nC. Thermal design must verify 0.89 °C/W R_thj-case compatibility; no layout changes needed if heatsink interface remains unchanged.

Does the source-drain diode support continuous conduction mode (CCM) in buck converters?

Yes - the diode supports 80 A continuous current (I_SD) and 320 A pulsed (I_SDM), with 1.3 V V_SD at 40 A and 41 ns t_rr. In CCM buck operation, ensure gate timing avoids cross-conduction; t_rr is low enough to minimize reverse recovery loss at ≤200 kHz switching.

STP140N4F6 Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: STripFET™ F6

Package/Case:: TO-220-3

Packaging:: Tube

Product Status:: Active

FET Type:: N-Channel

Technology:: MOSFET (Metal Oxide)

Drain to Source Voltage (Vdss):: 40 V

Current - Continuous Drain (Id) @ 25°C:: 80A (Tc)

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

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

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

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

Vgs (Max):: ±20V

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

FET Feature:: -

Power Dissipation (Max):: 168W (Tc)

Operating Temperature:: -

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: TO-220

STP140N4F6 FAQ

1.How can I place an order for STP140N4F6 through Aetrix?

Please submit a Request for Quotation (RFQ) for STP140N4F6 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 STP140N4F6 reliable?

The price and inventory of STP140N4F6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STP140N4F6 is usually 5 days.

3.What payment methods are accepted for STP140N4F6?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STP140N4F6 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for STP140N4F6?

STP140N4F6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your STP140N4F6 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 STP140N4F6?

For technical support, including STP140N4F6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STP140N4F6 requirements.

6.How does Aetrix verify that STP140N4F6 is sourced from the original manufacturer or authorized distributors?

All STP140N4F6 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 STP140N4F6 meets industry standards.

7.What is the process for return or replacement of STP140N4F6?

All STP140N4F6 units undergo pre-shipment inspection (PSI). If there is an issue with STP140N4F6, 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 STP140N4F6 part is unused and in its original packaging.

Return procedure for STP140N4F6:

1.Submit a request within 90 days.

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

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