STN3N40K3 STMicroelectronics MOSFET (N-Channel) (SOT223 (3-Pin)) In Stock

ROHS COMPLIANT PACKAGE-3

ACTIVEMOSFET (N-Channel)Verified May 2026
Package / Visual Reference
STN3N40K3SOT223 (3-Pin)
Quick Facts
Manufacturer
STMicroelectronics
Package
SOT223 (3-Pin)
Pin Count
3
Lifecycle
ACTIVE
Category
MOSFET (N-Channel)
Temp Range
?°C to 150.0°C
RoHS
Compliant
Lead Time
3–7 business days
Shipping
DHL Express · Worldwide

Specifications

Factory Lead Time13Weeks
YTEOL6.3
Avalanche Energy Rating (Eas)45mJ
Case ConnectionDRAIN
ConfigurationSINGLE WITH BUILT-IN DIODE
DS Breakdown Voltage-Min400V
Drain Current-Max (ID)3A
Drain-source On Resistance-Max3.3Ω
FET TechnologyMETAL-OXIDE SEMICONDUCTOR
JESD-30 CodeR-PDSO-G3
JESD-609 Codee3
Number of Elements1
Operating ModeENHANCEMENT MODE
Package Body MaterialPLASTIC/EPOXY
Package ShapeRECTANGULAR
Package StyleSMALL OUTLINE
Peak Reflow Temperature (Cel)260
Polarity/Channel TypeN-CHANNEL
Power Dissipation-Max (Abs)3.3W
Pulsed Drain Current-Max (IDM)12A
Qualification StatusNot Qualified
Surface MountYES
Terminal FinishMatte Tin (Sn)
Terminal FormGULL WING
Terminal PositionDUAL
Time@Peak Reflow Temperature-Max (s)30
Transistor ApplicationSWITCHING
Transistor Element MaterialSILICON
PackageSOT223 (3-Pin)

Compliance & Regulatory

RoHS StatusCompliant
Moisture Sensitivity LevelMSL 1
ECCNEAR99
Country of OriginMainland China

Datasheet

STN3N40K3 Datasheet Download

Official datasheet from STMicroelectronics

Alternate & Equivalent Parts

Compatible alternatives and drop-in replacements for STN3N40K3:

Frequently Asked Questions

What is the price of STN3N40K3?

STN3N40K3 is priced from competitive USD depending on quantity. Submit an RFQ on FindMyChip for the best current pricing from authorized China distributors.

Is STN3N40K3 in stock?

STN3N40K3 is currently available at FindMyChip. We maintain stock from authorized distributors and ship worldwide with typical 3-7 business day lead time.

Where can I buy STN3N40K3?

You can buy STN3N40K3 from FindMyChip, a B2B electronic component platform sourcing from China distributors. We offer competitive pricing and low MOQ for STN3N40K3 from STMicroelectronics.

What is the datasheet for STN3N40K3?

The official STN3N40K3 datasheet from STMicroelectronics contains full specifications including pin configuration, electrical characteristics, and application notes. Download it directly from the datasheet section above.

What package does STN3N40K3 come in?

STN3N40K3 is available in SOT223 (3-Pin) packaging. See the package diagram and pinout above for detailed dimensional information.

Related Guides

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About STMicroelectronics

STMicroelectronics is a global semiconductor leader serving customers across the spectrum of electronics applications. ST's products are found in a wide range of applications including automotive, industrial, personal electronics, and communications.

AvailabilityIn Stock
Reference Price (USD)
Contact for Price
Buy from 1pc · Factory-direct pricing
pcs

In Stock · 24h Response · Worldwide Shipping

Lead Time3-7 business days
MOQFrom 1 piece
ShippingDHL / FedEx / UPS
OriginChina (Authorized)

Response within 24 hours · Worldwide shipping

Their engineering team helped us find a pin-compatible alternative when our original MCU went EOL.

MR
Marco Rossi
CTO, AutoDrive Systems, Italy