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

STMicroelectronics STD12NF06LT4

Name: STD12NF06LT4
Brand: STMicroelectronics
SKU: STD12NF06LT4
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: STD12NF06LT4

Manufacturer:: STMicroelectronics

Category:: FETs, MOSFETs

Package:: TO-252-3, DPAK (2 Leads + Tab), SC-63

Datasheet:: STD12NF06LT4.pdf

Description:: MOSFET N-CH 60V 12A DPAK

Quantity:: RFQ Add To RFQ list

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Inventory:4,095

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Product details

Overview

STD12NF06LT4 from STMicroelectronics is an N-channel 60 V, 12 A, 0.085 Ω (typ.) logic-level MOSFET in TO-220FP package, designed for high-efficiency DC-DC converters, motor control switches, and power supply load switching. It features low gate charge (27 nC), fast switching (td(on) = 15 ns, td(off) = 45 ns), and operates up to 175 °C junction temperature.

For engineers reviewing the STD12NF06LT4 datasheet, STD12NF06LT4 pinout, STD12NF06LT4 application, or STD12NF06LT4 equivalent, key selection criteria include R_DS(on) at 4.5 V gate drive, avalanche ruggedness rating (E_AS = 190 mJ), and TO-220FP's insulated mounting capability for high-voltage isolation.

Technical Context

This MOSFET uses ST's proprietary SuperMESH™ technology to achieve optimized conduction and switching trade-offs. Its logic-level gate threshold (V_GS(th) = 1–2.5 V) enables direct drive from microcontrollers and PWM controllers without level-shifting circuitry.

The device integrates 100% avalanche-tested ruggedness and features a built-in ESD protection diode on the gate. Its SOA is defined up to T_j = 175 °C with pulse-width-limited safe operating area curves supporting repetitive switching under inductive loads.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	60 V - Maximum drain-source blocking voltage for use in ≤48 V bus systems with margin.
I_D (continuous)	12 A @ T_c = 25 °C - Sustained current handling with heatsink; derates to 7.5 A at T_c = 100 °C.
R_DS(on) max	0.105 Ω @ V_GS = 4.5 V - Ensures <1.5 W conduction loss at 12 A, critical for thermally constrained designs.
Q_g	27 nC - Enables efficient 100–500 kHz switching with moderate gate driver strength (e.g., TC4427).
E_AS	190 mJ - Confirmed single-pulse avalanche energy supports inductive turn-off without snubbers in relay/motor drivers.
T_j max	175 °C - Allows operation in sealed enclosures or high-ambient industrial environments without forced air.

Pinout & Package

Package: TO-220FP (Full-Pak), insulated plastic case with electrically isolated tab - enables direct mounting to heatsink without insulator washer while maintaining creepage/clearance compliance.

Pin/Terminal	Circuit Role	Design Meaning
Drain (Tab)	Main current path output	Electrically connected to metal tab; must be isolated from chassis unless referenced to system ground.
Source	Reference node for gate drive and current return	Low-inductance connection point for sense resistor placement and gate driver return path.
Gate	Control input for channel conduction	Logic-compatible input requiring <2.5 V threshold; gate resistor selection affects dV/dt and EMI.

Key Features

Feature	Design Value
Logic-level gate drive	Operates fully enhanced at 4.5 V, eliminating need for gate boosters in 3.3/5 V MCU-based systems.
100% avalanche tested	Guarantees robustness against inductive kickback in motor and solenoid switching without external clamping.
TO-220FP insulated package	Provides 2.5 kV isolation between tab and leads, enabling simplified thermal design in high-side configurations.
Low Q_g/R_DS(on) ratio	Optimizes figure-of-merit for SMPS applications where both conduction and switching losses impact efficiency.

Applications

DC-DC Buck Converter

Brushed DC Motor Driver

Use Scenario: 12–48 V input, 3–24 V output synchronous buck regulator delivering up to 10 A.

IC Role / Device Role: High-side power switch controlling energy transfer into output inductor.

Use Value: Low R_DS(on) minimizes conduction loss; fast switching reduces dead-time losses and improves light-load efficiency.

Use Scenario: Bidirectional H-bridge for 24 V, 5 A brushed motors in industrial actuators.

IC Role / Device Role: Low-side switch in half-bridge leg, driven by isolated gate driver.

Use Value: Avalanche rating eliminates need for freewheeling diode snubbing; TO-220FP isolation simplifies PCB layout near floating gate signals.

AC-DC Auxiliary Supply

Hot-Swap Controller

Use Scenario: 300 V DC bus-derived auxiliary 12 V supply using flyback topology with 100 kHz switching.

IC Role / Device Role: Primary-side switch managing transformer energy transfer.

Use Value: 60 V rating provides margin over reflected 120 V spikes; 175 °C rating supports sealed enclosure operation.

Use Scenario: 24 V backplane hot-swap module limiting inrush during board insertion.

IC Role / Device Role: Series pass element controlled by dedicated hot-swap IC (e.g., LTC4215).

Use Value: Low R_DS(on) limits voltage drop and self-heating during steady-state; insulated tab avoids ground loop issues.

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
IRFZ44NPBF	R_DS(on) = 0.028 Ω @ 10 V (higher gate drive required); no avalanche rating specified.	Requires 10 V gate drive - incompatible with 3.3 V logic; unsuitable for unclamped inductive loads.	Select only if gate drive ≥10 V is available and avalanche stress is absent.
STP12NF06L	Same die in TO-220 (non-insulated tab); identical R_DS(on), Q_g, and E_AS.	Requires insulating washer for heatsink mounting; less suitable for high-side or floating configurations.	Prefer when cost sensitivity outweighs isolation needs and mechanical mounting allows insulation.

Compared with IRFZ44NPBF and STP12NF06L, STD12NF06LT4 uniquely combines logic-level drive, certified avalanche ruggedness, and electrically isolated packaging - making it optimal for space-constrained, high-reliability industrial power stages where gate drive voltage and thermal/mechanical integration are tightly coupled.

Availability

STD12NF06LT4 is available at Aetrix Electronics and suitable for DC-DC converters, motor control modules, and hot-swap circuits requiring stable component supply, long-term industrial lifecycle support, and traceable sourcing.

Supply support for STD12NF06LT4 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, digital, and mixed-signal ICs, discrete devices, and MEMS sensors for industrial, automotive, and consumer markets.

STD12NF06LT4 belongs to ST's Power MOSFET portfolio targeting medium-power switching applications - engineered for high efficiency, ruggedness, and ease of integration in industrial power supplies and motor drives.

FAQ

What is the maximum gate-source voltage rating for STD12NF06LT4?

The absolute maximum V_GS is ±20 V per STMicroelectronics' official datasheet. Operation beyond ±16 V risks permanent gate oxide damage. For reliable logic-level drive, V_GS should be maintained between 4.5 V (for full enhancement) and 12 V (to minimize gate charge without overstress). Transient overshoot must be clamped with Zener diodes if driving from inductive gate traces.

Does STD12NF06LT4 support parallel operation?

Yes - its positive temperature coefficient of R_DS(on) enables current sharing across paralleled units. However, layout symmetry (matched gate and source inductance) and individual gate resistors (≥10 Ω) are mandatory to prevent oscillation and uneven dynamic current distribution. Thermal coupling via shared heatsink further improves balance under continuous load.

Is the TO-220FP tab electrically isolated from all pins?

Yes - the metal tab is internally insulated from Drain, Source, and Gate terminals, rated for 2.5 kV RMS isolation per IEC 60747-5-2. This allows direct heatsink mounting without insulating hardware, reducing thermal resistance by ~1.5 °C/W compared to standard TO-220 with mica washer, while maintaining safety clearance in Class II designs.

What is the recommended PCB footprint for STD12NF06LT4?

ST recommends a 25 mm² copper pour per pin (minimum) with thermal vias (≥8 × 0.3 mm) under the tab connecting to inner-layer ground or power planes. The footprint must follow ST's "TO-220FP" land pattern (Doc ID 14722), including 2.54 mm pin pitch, 5.5 mm lead width, and 1.5 mm solder mask expansion to ensure manufacturability and thermal reliability at full rated current.

STD12NF06LT4 Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: STripFET™ II

Package/Case:: TO-252-3, DPAK (2 Leads + Tab), SC-63

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

FET Type:: N-Channel

Technology:: MOSFET (Metal Oxide)

Drain to Source Voltage (Vdss):: 60 V

Current - Continuous Drain (Id) @ 25°C:: 12A (Tc)

Drive Voltage (Max Rds On, Min Rds On):: 5V, 10V

Rds On (Max) @ Id, Vgs:: 100mOhm @ 6A, 10V

Vgs(th) (Max) @ Id:: 2V @ 250µA

Gate Charge (Qg) (Max) @ Vgs:: 10 nC @ 5 V

Vgs (Max):: ±16V

Input Capacitance (Ciss) (Max) @ Vds:: 350 pF @ 25 V

FET Feature:: -

Power Dissipation (Max):: 42.8W (Tc)

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: DPAK

STD12NF06LT4 FAQ

1.How can I place an order for STD12NF06LT4 through Aetrix?

Please submit a Request for Quotation (RFQ) for STD12NF06LT4 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 STD12NF06LT4 reliable?

The price and inventory of STD12NF06LT4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STD12NF06LT4 is usually 5 days.

3.What payment methods are accepted for STD12NF06LT4?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STD12NF06LT4 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for STD12NF06LT4?

STD12NF06LT4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your STD12NF06LT4 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 STD12NF06LT4?

For technical support, including STD12NF06LT4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STD12NF06LT4 requirements.

6.How does Aetrix verify that STD12NF06LT4 is sourced from the original manufacturer or authorized distributors?

All STD12NF06LT4 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 STD12NF06LT4 meets industry standards.

7.What is the process for return or replacement of STD12NF06LT4?

All STD12NF06LT4 units undergo pre-shipment inspection (PSI). If there is an issue with STD12NF06LT4, 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 STD12NF06LT4 part is unused and in its original packaging.

Return procedure for STD12NF06LT4:

1.Submit a request within 90 days.

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

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