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

STMicroelectronics STL25N15F4

Name: STL25N15F4
Brand: STMicroelectronics
SKU: STL25N15F4
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: STL25N15F4

Manufacturer:: STMicroelectronics

Category:: FETs, MOSFETs

Package:: 8-PowerVDFN

Datasheet:: STL25N15F4.pdf

Description:: MOSFET N-CH 150V 25A POWERFLAT

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Product details

Overview

STL25N15F4 from STMicroelectronics is an N-channel enhancement-mode Power MOSFET in PowerFLAT™ (5×6) package, rated for 150 V drain-source voltage, 0.057 Ω typical R_DS(on) at V_GS = 10 V and I_D = 3 A, 6 A continuous drain current at T_C = 25 °C, and 100% avalanche-rated for robust switching in DC-DC converters and motor control stages.

For engineers reviewing the STL25N15F4 datasheet, STL25N15F4 pinout, STL25N15F4 application, or STL25N15F4 equivalent, this device is selected for high-efficiency low-side switching where low gate charge (48 nC), fast switching times (t_r = 13.5 ns, t_f = 11.4 ns), and thermally efficient PCB-mounting via exposed drain pad are critical design requirements.

Technical Context

This MOSFET employs ST's DeepGATE™ gate structure and STripFET™ process to minimize R_DS(on) while maintaining low Q_g (48 nC) and Q_gd (13.7 nC), enabling high-frequency operation up to several hundred kHz. Its 1.56 °C/W junction-to-case thermal resistance supports direct heatsinking through the exposed drain pad.

The device features a built-in source-drain diode with 85 ns reverse recovery time and 351 nC reverse recovery charge at 150 °C, suitable for synchronous rectification and inductive load switching. Avalanche energy rating of 125 mJ ensures ruggedness under unclamped inductive turn-off conditions.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	150 V - Maximum blocking voltage before breakdown; enables use in 100 V bus systems with margin.
R_DS(on) max	0.063 Ω - Confirmed worst-case on-resistance at V_GS = 10 V, I_D = 3 A, T_J = 25 °C; determines conduction loss in power stage.
I_D (cont.)	6 A at T_C = 25 °C - Continuous drain current limited by PCB thermal performance (R_thj-pcb = 31.3 °C/W).
Q_g	48 nC - Total gate charge required for full turn-on; directly impacts driver power and switching loss.
t_r/t_f	13.5 ns / 11.4 ns - Rise/fall times measured at V_DD = 75 V, I_D = 3 A, R_G = 4.7 Ω; defines minimum practical switching period.
E_AS	125 mJ - Single-pulse avalanche energy at T_J = 25 °C; validates safe operation during inductive fault events.

Pinout & Package

STL25N15F4 uses PowerFLAT™ (5×6) surface-mount package with exposed drain pad (D) on bottom for thermal and electrical connection. The package has 5 terminals: 3 drain pins (D), 1 source (S), and 1 gate (G), arranged in a single-row configuration optimized for high-current PCB routing and thermal dissipation.

Pin/Terminal	Circuit Role	Design Meaning
D (Drain, 3 pins)	Main current path output terminal	Electrically and thermally connected to exposed copper pad; must be soldered to large PCB copper area for thermal management.
S (Source)	Reference node for gate drive and current return	Provides low-inductance return path; used as ground reference for gate driver ICs in half-bridge configurations.
G (Gate)	Control input for channel conduction	High-impedance MOS gate requiring <100 nA leakage; sensitive to ESD; requires series resistor (4.7 Ω typical) to damp ringing.

Key Features

Feature	Design Value
N-channel enhancement mode	Self-turn-off behavior with zero gate voltage; eliminates need for active pull-down in low-side switch applications.
100% avalanche rated	Guaranteed survival under unclamped inductive switching stress up to 12.5 A and 125 mJ - no derating needed for flyback or motor phase transitions.
Low gate charge (48 nC)	Reduces driver power consumption and switching transition time, enabling higher PWM frequencies without excessive gate drive losses.
Very low R_DS(on) (0.057 Ω typ.)	Limits conduction loss to ≤2.05 W at 6 A, supporting compact thermal design in space-constrained power modules.

Applications

DC-DC Buck Converter

Brushed DC Motor Driver

Use Scenario: High-efficiency step-down regulator for industrial PLC I/O modules operating from 24–48 V input.

IC Role / Device Role: Low-side synchronous rectifier in 300 kHz buck stage, replacing Schottky diode to reduce forward drop and improve efficiency.

Use Value: Achieves >94% efficiency at 5 A load due to 0.057 Ω R_DS(on) and 11.4 ns fall time minimizing overlap loss.

Use Scenario: H-bridge driver for 12–24 V brushed motors in automated gate actuators.

IC Role / Device Role: Low-side switch controlling motor direction and PWM speed regulation.

Use Value: Withstands 12.5 A repetitive avalanche current during motor commutation spikes, eliminating external snubbers.

LED Constant-Current Driver

Power Supply OR-ing Circuit

Use Scenario: Constant-current dimmable LED driver for architectural lighting with 36 V string voltage.

IC Role / Device Role: Switching element in constant-current buck topology regulating LED current up to 3 A.

Use Value: Low 48 nC gate charge enables clean PWM dimming down to 100 Hz without gate oscillation or shoot-through risk.

Use Scenario: Redundant 12 V power supply OR-ing in telecom shelf management units.

IC Role / Device Role: Ideal diode replacement in back-to-back configuration for hot-swap and fault isolation.

Use Value: Source-drain diode forward voltage of 1.3 V at 6 A enables lower forward drop than discrete Schottky, reducing heat generation in parallel supplies.

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 IPP050N15N3G	R_DS(on) = 0.050 Ω (lower), Q_g = 52 nC (higher), TO-252 package	Higher thermal mass but larger footprint; less suitable for ultra-thin PCBs	Prefer when board-level thermal mass is available and lowest conduction loss is prioritized over gate drive strength.
Vishay SIHFN150-GE3	R_DS(on) = 0.075 Ω (higher), Q_g = 36 nC (lower), TO-220AB package	Through-hole mounting; better heatsink attachment but slower assembly	Choose when manual repairability, mechanical robustness, or legacy through-hole compatibility is required.

Compared with STL25N15F4, IPP050N15N3G offers lower conduction loss but demands stronger gate drive, while SIHFN150-GE3 trades higher R_DS(on) for simpler drive and mechanical serviceability - selection depends on thermal layout constraints and production assembly method.

Availability

STL25N15F4 is available at Aetrix Electronics and suitable for DC-DC converters, brushed DC motor drivers, LED constant-current regulators, and power supply OR-ing circuits requiring stable component supply and long-term industrial availability.

Supply support for STL25N15F4 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 device belongs to ST's Power MOSFET product line, engineered specifically for high-efficiency, high-reliability switching in space-constrained industrial power systems using advanced STripFET™ and DeepGATE™ technologies.

FAQ

Is STL25N15F4 suitable for synchronous rectification in a 100 kHz buck converter?

Yes. With 0.057 Ω R_DS(on), 48 nC Q_g, and 13.5 ns rise time, it delivers low conduction and switching losses at 100 kHz. Its 1.3 V source-drain diode forward voltage and 85 ns reverse recovery time further reduce body-diode conduction loss during dead-time intervals.

What is the maximum PCB copper area recommended for thermal performance?

ST recommends ≥1 in² (645 mm²) of 2 oz copper connected to the exposed drain pad for R_thj-pcb = 31.3 °C/W. For 6 A continuous operation at ambient 50 °C, this limits junction temperature to ~115 °C - within the 150 °C absolute maximum rating.

Does STL25N15F4 require a gate resistor, and what value is recommended?

Yes. A 4.7 Ω series gate resistor is specified in the datasheet test circuit (Figure 13) to damp high-frequency ringing caused by parasitic inductance. Lower values increase switching speed but risk overshoot; higher values reduce EMI but raise switching losses.

Can STL25N15F4 replace a TO-220 MOSFET in an existing design?

Only with PCB redesign. Its PowerFLAT™ (5×6) footprint differs entirely from TO-220: no through-holes, exposed drain on bottom, and 5-terminal SMT layout. Thermal and electrical simulation is required to confirm equivalent junction temperature and gate drive stability in the new layout.

STL25N15F4 Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: DeepGATE™, STripFET™

Package/Case:: 8-PowerVDFN

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

FET Type:: N-Channel

Technology:: MOSFET (Metal Oxide)

Drain to Source Voltage (Vdss):: 150 V

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

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

Rds On (Max) @ Id, Vgs:: 63mOhm @ 3A, 10V

Vgs(th) (Max) @ Id:: 4V @ 250µA

Gate Charge (Qg) (Max) @ Vgs:: 48 nC @ 10 V

Vgs (Max):: ±20V

Input Capacitance (Ciss) (Max) @ Vds:: 2710 pF @ 25 V

FET Feature:: -

Power Dissipation (Max):: 80W (Tc)

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: PowerFlat™ (5x6)

STL25N15F4 FAQ

1.How can I place an order for STL25N15F4 through Aetrix?

Please submit a Request for Quotation (RFQ) for STL25N15F4 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 STL25N15F4 reliable?

The price and inventory of STL25N15F4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STL25N15F4 is usually 5 days.

3.What payment methods are accepted for STL25N15F4?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STL25N15F4 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for STL25N15F4?

STL25N15F4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your STL25N15F4 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 STL25N15F4?

For technical support, including STL25N15F4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STL25N15F4 requirements.

6.How does Aetrix verify that STL25N15F4 is sourced from the original manufacturer or authorized distributors?

All STL25N15F4 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 STL25N15F4 meets industry standards.

7.What is the process for return or replacement of STL25N15F4?

All STL25N15F4 units undergo pre-shipment inspection (PSI). If there is an issue with STL25N15F4, 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 STL25N15F4 part is unused and in its original packaging.

Return procedure for STL25N15F4:

1.Submit a request within 90 days.

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

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