STN4NF03L STMicroelectronics Integrated Circuit (SOT223 (3-Pin)) In Stock
The STN4NF03L is a low-threshold N-channel power MOSFET from STMicroelectronics rated at 30 V drain-source breakdown, 6.5 A continuous drain current, and 0.06 ohm maximum on-resistance with a built-in body diode. It delivers 100 mJ avalanche energy rating for robustness in inductive load switching within a 4-pin SOT-223 package. Available from authorized distributors worldwide with competitive pricing.
- Manufacturer
- STMicroelectronics
- Package
- SOT223 (3-Pin)
- Pin Count
- 4
- Lifecycle
- ACTIVE
- Datasheet
- STN4NF03L Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.2121(MOQ 250)
- Temp Range
- ?°C to 150.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of STN4NF03L?
- Ultra-low 0.06 ohm maximum drain-source on-resistance at 6.5 A minimizes conduction losses and device heating in load-switch and motor-drive applications
- 30 V breakdown voltage with 100 mJ avalanche energy rating provides robust protection against inductive voltage spikes without external clamping components
- Low-threshold gate drive allows full enhancement from 2.5 V to 3.3 V logic signals, eliminating gate-drive level-shift circuits in battery-powered designs
What is STN4NF03L used for?
The STN4NF03L is deployed in DC motor speed controllers, solenoid drivers, and battery load-switch circuits operating from 2-cell Li-ion (8.4 V) or 24 V automotive and industrial supply rails where its 30 V rating and 6.5 A continuous current capability provide adequate margin. Its low 0.06 ohm on-resistance reduces I²R heat dissipation at full current, making it efficient in handheld power tools, e-bike battery management systems, and brushed DC motor drivers up to 20 W. The device is also used in USB power delivery and OR-ing circuits where the built-in body diode and low threshold voltage simplify gate control from 3.3 V microcontroller I/O.
What are the specifications of STN4NF03L?
| YTEOL | 5.32 |
| Additional Feature | LOW THRESHOLD |
| Avalanche Energy Rating (Eas) | 100mJ |
| Case Connection | DRAIN |
| Configuration | SINGLE WITH BUILT-IN DIODE |
| DS Breakdown Voltage-Min | 30V |
| Drain Current-Max (ID) | 6.5A |
| Drain-source On Resistance-Max | 0.06Ω |
| FET Technology | METAL-OXIDE SEMICONDUCTOR |
| JESD-30 Code | R-PDSO-G4 |
| JESD-609 Code | e3 |
| Number of Elements | 1 |
| Operating Mode | ENHANCEMENT MODE |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Polarity/Channel Type | N-CHANNEL |
| Power Dissipation-Max (Abs) | 2.5W |
| Pulsed Drain Current-Max (IDM) | 26A |
| Qualification Status | Not Qualified |
| Surface Mount | YES |
| Terminal Finish | Matte Tin (Sn) - annealed |
| Terminal Form | GULL WING |
| Terminal Position | DUAL |
| Transistor Application | SWITCHING |
| Transistor Element Material | SILICON |
| ## STN4NF03L Alternates Showing results | Image |
| Package | SOT223 (3-Pin) |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| Country of Origin | Mainland China |
Where can I find the STN4NF03L datasheet?
STN4NF03L Datasheet DownloadOfficial datasheet from STMicroelectronics
What are equivalent replacements for STN4NF03L?
Compatible alternatives and drop-in replacements for STN4NF03L:
suggested
suggested
suggested
suggested
suggested
Power Field-Effect Transistor, 4A I(D), 60V, 0.12ohm, 1-Element, N-Channel, Silicon, Metal-oxide Semiconductor FET
Frequently Asked Questions
What continuous drain current and on-resistance does the STN4NF03L handle at its maximum ratings?
The STN4NF03L is rated for 6.5 A continuous drain current with a maximum drain-source on-resistance of 0.06 ohm, resulting in a conduction power loss of only 2.3 W at full current. This low RDS(on) makes the device highly efficient in load-switch and motor-drive circuits operating from 5 V to 24 V supply rails where thermal management is critical.
Can the STN4NF03L be driven directly from a 3.3 V microcontroller GPIO without a gate driver?
Yes, the STN4NF03L is a low-threshold MOSFET designed to achieve full enhancement at gate voltages as low as 2.5 V to 3.3 V, making it compatible with direct GPIO drive from 3.3 V microcontrollers without an additional gate driver or level-shift circuit. The 0.06 ohm on-resistance specification is typically measured at VGS = 4.5 V or 10 V, so at 3.3 V drive the actual RDS(on) may increase by 20% to 50%, which should be factored into thermal calculations for 6.5 A loads.
What is the avalanche energy rating of the STN4NF03L and why does it matter for inductive loads?
The STN4NF03L is rated for 100 mJ of unclamped inductive switching (UIS) avalanche energy per pulse, which represents the amount of energy it can safely absorb when an inductive load forces the drain voltage above the 30 V breakdown level during turn-off. In relay driver and solenoid switching applications with inductances of 1 mH to 10 mH, this 100 mJ rating provides sufficient margin to survive occasional avalanche events without external TVS clamping.
How does the 4-pin SOT-223 package of the STN4NF03L aid thermal dissipation in a motor-drive PCB?
The STN4NF03L 4-pin SOT-223 package includes a large tab (pin 4) directly connected to the drain that acts as a heatsink pad, allowing heat to flow into the PCB copper pour at the drain node. With a typical junction-to-PCB thermal resistance around 10 °C/W to 20 °C/W when soldered to a 1 cm² copper area, the device can sustain several watts of continuous dissipation before approaching the 150 °C maximum junction temperature at 6.5 A drain current.
Which STMicroelectronics alternatives offer higher voltage or current ratings when the STN4NF03L design margin is insufficient?
When the 30 V or 6.5 A ratings of the STN4NF03L are insufficient, the STB11N40K3 or STP16NF06 offer higher breakdown voltages of 400 V and 60 V respectively with 11 A to 16 A continuous current capability in TO-220 or D²PAK packages for more demanding 12 V to 48 V motor and power-conversion applications. For the same SOT-223 footprint at a higher voltage, the STN5PF30L or STP6NK60ZFP provide 60 V to 600 V options while maintaining low-threshold gate drive compatibility with 3.3 V and 5 V logic.
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Why Buy from FindMyChip
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.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 250+ | $0.4480 | $112.00 |
| 500+ | $0.3650 | $182.50 |
| 1000+ | $0.3080 | $308.00 |
| 4000+ | $0.2399 | $959.60 |
| 8000+ | $0.2202 | $1761.60 |
| 24000+ | $0.2121 | $5090.40 |
In Stock · 24h Response · Worldwide Shipping
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