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

STMicroelectronics STF10N95K5

Name: STF10N95K5
Brand: STMicroelectronics
SKU: STF10N95K5
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: STF10N95K5

Manufacturer:: STMicroelectronics

Category:: FETs, MOSFETs

Package:: TO-220-3 Full Pack

Datasheet:: STF10N95K5.pdf

Description:: MOSFET N-CH 950V 8A TO220FP

Quantity:: RFQ Add To RFQ list

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Inventory:1,073

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Product details

Overview

STF10N95K5 from STMicroelectronics is a high-voltage N-channel Power MOSFET based on MDmesh K5 technology, designed for switching applications requiring 950 V blocking capability, 650 mΩ typical R_DS(on), and 8 A continuous drain current at T_C = 25 °C. It features ultra-low gate charge (22 nC), 100% avalanche tested operation, and Zener-protected gate, making it suitable for high-efficiency flyback and resonant converters in industrial power supplies.

For engineers reviewing the STF10N95K5 datasheet, STF10N95K5 pinout, STF10N95K5 application, or STF10N95K5 equivalent, key selection criteria include its 950 V V_(BR)DSS, 22 nC total gate charge, 4.5 V/ns diode recovery dv/dt rating, and TO-220FP package thermal resistance of 4.2 °C/W (junction-to-case).

Technical Context

This device employs ST's proprietary vertical MDmesh K5 structure to achieve low specific on-resistance and minimized gate charge-critical for high-frequency hard-switched topologies. Its 950 V breakdown voltage supports universal-input offline designs up to 400 V DC bus with margin.

The integrated Zener-protected gate enables robust ESD immunity, while 100% unclamped inductive avalanche testing (E_AS = 122 mJ at T_J = 25 °C) ensures reliability under transient overloads. The source-drain diode exhibits 404 ns reverse recovery time and 5.2 µC Q_rr at 25 °C, supporting moderate-speed synchronous rectification.

Key Specifications

Parameter	Value and Actual Design Meaning
V_(BR)DSS	950 V - Enables direct connection to 400 V DC bus with >125 V safety margin in offline SMPS.
R_DS(on) max	800 mΩ - Limits conduction loss to ≤5.12 W at 8 A, critical for thermal management in enclosed enclosures.
Q_g	22 nC - Reduces gate drive power requirement and enables <100 kHz operation with standard 1 A drivers.
E_AS	122 mJ - Supports single-pulse energy absorption during startup or overload without failure.
R_thJC	4.2 °C/W - Allows 77 °C junction rise above case at 130 W dissipation, defining heatsink sizing baseline.
dv/dt ruggedness	50 V/ns - Ensures reliable turn-off in high-dV/dt environments like PFC boost stages.
Co(er)	28 pF - Low output capacitance energy reduces switching loss during zero-voltage transitions.

Pinout & Package

STF10N95K5 is housed in a TO-220FP (Full-Pak) package with insulated tab, enabling direct mounting to heatsinks without isolation hardware. The plastic body provides creepage/clearance compliance for reinforced insulation in AC/DC adapters.

Pin/Terminal	Circuit Role	Design Meaning
D (Drain)	Main high-side current path	Connected to primary high-voltage rail; electrically tied to metal tab in TO-220FP variant.
G (Gate)	Control electrode	Zener-protected input requiring ≤±30 V drive; 6.5 Ω gate resistance limits ringing.
S (Source)	Reference node for gate drive	Common return for load current and gate loop; low-inductance layout essential for EMI control.

Key Features

Feature	Design Value
MDmesh K5 vertical structure	Reduces R_DS(on) × Q_g FoM by >40% vs. prior-generation 900 V MOSFETs, enabling smaller magnetics.
100% unclamped avalanche rated	Guarantees survival under worst-case inductive turn-off events without derating design margins.
Zener-protected gate	Withstands ±30 V transients without external clamping, simplifying gate driver circuitry.
Low C_oss (50 pF)	Minimizes capacitive switching loss and improves light-load efficiency in QR flyback converters.
ECOPACK® compliant	Meets RoHS and halogen-free requirements for global industrial and consumer power supply certifications.

Applications

Industrial Flyback Converters

AC-DC Adapters

Use Scenario: 65 W universal-input flyback supplying isolated 12 V/5 A output in factory automation controllers.

IC Role / Device Role / Timing Role: Primary-side high-voltage switch operating at 65 kHz with quasi-resonant control.

Use Value: 950 V rating eliminates need for voltage clamping networks; 22 nC Q_g enables efficient operation with low-cost gate drivers.

Use Scenario: Compact 36 W laptop adapter with no-load power <30 mW and 230 V AC input.

IC Role / Device Role / Timing Role: Main switching transistor in discontinuous conduction mode (DCM) flyback topology.

Use Value: 650 mΩ typical R_DS(on) minimizes conduction loss at peak line; TO-220FP package allows direct heatsink mounting in tight form factors.

LED Driver Power Stages

High-Voltage DC-DC Isolators

Use Scenario: Constant-current LED driver for street lighting with 350 V DC bus and 1.5 A output.

IC Role / Device Role / Timing Role: Primary-side switch in active-clamp forward converter running at 120 kHz.

Use Value: 50 V/ns dv/dt ruggedness prevents false turn-on during fast voltage transitions across transformer leakage inductance.

Use Scenario: 1 kV isolation barrier DC-DC module for medical sensor interfaces requiring reinforced insulation.

IC Role / Device Role / Timing Role: High-side switch in push-pull topology driving center-tapped transformer primary.

Use Value: 2.5 kV RMS insulation withstand voltage between leads and heatsink satisfies IEC 60601-1 creepage requirements without additional barriers.

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-voltage switching applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
STP10N95K5	Same die, TO-220 package with non-insulated tab; R_thJC = 0.96 °C/W but requires insulating washer.	Better thermal performance in open-frame designs where electrical isolation is managed externally.	Select when heatsink isolation is already implemented and lower thermal resistance is prioritized over assembly simplicity.
STW10N95K5	Same die, TO-247 package; R_thJC = 0.96 °C/W and higher P_TOT rating (130 W vs. 30 W).	Suitable for higher-power (>60 W) industrial SMPS where TO-220FP thermal limit is exceeded.	Choose for systems demanding >30 W continuous dissipation or needing mechanical robustness in vibration-prone environments.

Compared with STF10N95K5, STP10N95K5 offers superior thermal resistance but adds assembly complexity, while STW10N95K5 enables higher power density at the cost of larger footprint and higher bill-of-materials cost.

Availability

STF10N95K5 is available at Aetrix Electronics and suitable for industrial flyback converters, AC-DC adapters, and LED driver power stages requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for STF10N95K5 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 management, analog, microcontrollers, and automotive ICs.

STF10N95K5 belongs to the MDmesh K5 high-voltage Power MOSFET product line, engineered specifically for high-efficiency, high-density offline power conversion in industrial and consumer applications.

FAQ

What is the maximum continuous drain current for STF10N95K5 at 100 °C case temperature?

The maximum continuous drain current is 5 A at T_C = 100 °C, as specified in Table 1 of DS9774 Rev 4. This derating reflects thermal limitations of the TO-220FP package, which has a junction-to-case thermal resistance of 4.2 °C/W and a maximum junction temperature of 150 °C.

Does STF10N95K5 include integrated gate protection?

Yes - STF10N95K5 integrates a Zener diode between gate and source to clamp gate-source voltage within ±30 V, eliminating the need for external gate protection components in most designs. This is confirmed in the "Features" section and electrical characteristics table (I_GSS test condition).

Can STF10N95K5 be used in avalanche mode for energy recycling?

No - while STF10N95K5 is 100% tested for single-pulse avalanche (E_AS = 122 mJ), it is not rated for repetitive avalanche operation. The datasheet specifies avalanche current (I_AR) and energy only under non-repetitive conditions with pulse width limited by junction temperature.

What is the recommended gate resistor value for hard-switched 65 kHz flyback operation?

A 10 Ω to 22 Ω gate resistor is recommended to balance switching speed and ringing suppression. With Q_g = 22 nC and typical driver output impedance, this range achieves ~100 ns turn-on delay and damped gate waveform, as validated in Figure 23 and referenced test circuits in DS9774.

STF10N95K5 Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: SuperMESH5™

Package/Case:: TO-220-3 Full Pack

Packaging:: Tube

Product Status:: Active

FET Type:: N-Channel

Technology:: MOSFET (Metal Oxide)

Drain to Source Voltage (Vdss):: 950 V

Current - Continuous Drain (Id) @ 25°C:: 8A (Tc)

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

Rds On (Max) @ Id, Vgs:: 800mOhm @ 4A, 10V

Vgs(th) (Max) @ Id:: 5V @ 100µA

Gate Charge (Qg) (Max) @ Vgs:: 22 nC @ 10 V

Vgs (Max):: ±30V

Input Capacitance (Ciss) (Max) @ Vds:: 630 pF @ 100 V

FET Feature:: -

Power Dissipation (Max):: 30W (Tc)

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

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: TO-220FP

STF10N95K5 FAQ

1.How can I place an order for STF10N95K5 through Aetrix?

Please submit a Request for Quotation (RFQ) for STF10N95K5 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 STF10N95K5 reliable?

The price and inventory of STF10N95K5 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STF10N95K5 is usually 5 days.

3.What payment methods are accepted for STF10N95K5?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STF10N95K5 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for STF10N95K5?

STF10N95K5 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your STF10N95K5 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 STF10N95K5?

For technical support, including STF10N95K5 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STF10N95K5 requirements.

6.How does Aetrix verify that STF10N95K5 is sourced from the original manufacturer or authorized distributors?

All STF10N95K5 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 STF10N95K5 meets industry standards.

7.What is the process for return or replacement of STF10N95K5?

All STF10N95K5 units undergo pre-shipment inspection (PSI). If there is an issue with STF10N95K5, 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 STF10N95K5 part is unused and in its original packaging.

Return procedure for STF10N95K5:

1.Submit a request within 90 days.

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

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