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

STMicroelectronics STD80N3LL

Name: STD80N3LL
Brand: STMicroelectronics
SKU: STD80N3LL
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: STD80N3LL

Manufacturer:: STMicroelectronics

Category:: FETs, MOSFETs

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

Datasheet:: STD80N3LL.pdf

Description:: MOSFET N-CH 30V 80A DPAK

Quantity:: RFQ Add To RFQ list

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Inventory:7,204

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Product details

Overview

STD80N3LL from STMicroelectronics is an N-channel enhancement-mode power MOSFET designed for high-current, low-voltage switching in DC-DC converters, motor drives, and load switches. It delivers 80 A continuous drain current at T_C = 25 °C, 4 mΩ typical R_DS(on) at V_GS = 10 V, 75 W total power dissipation, and operates up to 175 °C junction temperature in a DPAK (TO-252) package.

For engineers reviewing the STD80N3LL datasheet, STD80N3LL pinout, STD80N3LL application, or STD80N3LL equivalent, key selection criteria include its low gate charge (18 nC), high avalanche ruggedness, thermal resistance of 2 °C/W (junction-to-case), and suitability for high-efficiency 12–24 V industrial and automotive power stages.

Technical Context

This MOSFET employs planar stripe silicon technology optimized for low conduction loss and fast switching. Its gate threshold voltage (1–2.5 V) enables direct drive from 3.3 V and 5 V logic, while the 1640 pF input capacitance and 160 pF reverse transfer capacitance support stable operation with standard gate drivers.

The device features an integrated source-drain diode with 1.2 V forward voltage at 80 A and 21 ns reverse recovery time, enabling efficient synchronous rectification and unclamped inductive load handling without external freewheeling diodes.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	30 V - Maximum blocking voltage for 12 V/24 V bus applications
R_DS(on) typ.	4 mΩ at V_GS = 10 V - Enables <1 W conduction loss at 50 A
I_D cont.	80 A at T_C = 25 °C - Supports high-current power rails with minimal heatsinking
Q_g	18 nC - Reduces gate driver power loss and enables >100 kHz switching
R_thj-case	2 °C/W - Allows direct mounting to PCB copper pour or heatsink for thermal management
V_GS(th)	1–2.5 V - Compatible with standard microcontroller GPIO and low-voltage PWM controllers
t_r/t_f	8 ns / 12 ns - Minimizes switching transition losses in hard-switched topologies

Pinout & Package

The STD80N3LL is housed in a surface-mount DPAK (TO-252) package with exposed drain tab for thermal and electrical connection. The package has three terminals: Drain (Tab), Gate (Pin 1), and Source (Pin 3).

Pin/Terminal	Circuit Role	Design Meaning
D (Tab)	Drain	High-current output node; electrically and thermally connected to large copper area on PCB
G (Pin 1)	Gate	Control input requiring <18 nC charge for full enhancement; sensitive to ESD
S (Pin 3)	Source	Reference node for gate drive and current sensing; tied to power ground in low-side configuration

Key Features

Feature	Design Value
Very low R_DS(on)	4 mΩ typ. reduces I²R losses by >30% vs. comparable 5–6 mΩ MOSFETs at 40 A
Low gate charge	18 nC enables use of low-power gate drivers (e.g., TC4420, UCC27517) without boost circuitry
High avalanche ruggedness	Rated for unclamped inductive switching per Figure 16 - eliminates need for external snubbers in relay/motor drive
ECOPACK® compliant	Meets RoHS and halogen-free requirements for industrial and automotive end equipment

Applications

DC-DC Buck Converter

Automotive Body Control Module

Use Scenario: High-efficiency 12 V to 5 V/3.3 V step-down converter in infotainment head unit.

IC Role / Device Role: Synchronous high-side switch with 80 A peak current capability.

Use Value: 4 mΩ R_DS(on) limits conduction loss to <1.6 W at 50 A, enabling compact thermal design without forced air cooling.

Use Scenario: Power distribution for window lift, seat adjustment, and mirror control.

IC Role / Device Role: Low-side load switch protecting ECU outputs from short-circuit and overcurrent faults.

Use Value: 320 A pulsed drain current rating supports motor stall conditions; 175 °C max T_j ensures reliability under hood temperature cycling.

Industrial Motor Drive

Server PSU OR-ing Circuit

Use Scenario: Half-bridge inverter stage for 24 V BLDC fan or pump controller.

IC Role / Device Role: Low-side switching element with fast 12 ns fall time for precise PWM timing.

Use Value: 21 ns reverse recovery time and 14 nC Q_rr minimize shoot-through risk and body-diode conduction loss during dead-time.

Use Scenario: Hot-swap and redundancy path in 12 V server backplane power rail.

IC Role / Device Role: Ideal diode replacement with controlled turn-on/turn-off via gate drive.

Use Value: 1.2 V V_SD at 80 A reduces forward drop by >60% vs. Schottky diode, cutting power loss and heat generation.

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
IRF8726PbF	R_DS(on) = 4.2 mΩ (V_GS = 10 V); Q_g = 17 nC; TO-252 package	Similar thermal performance but lower avalanche energy rating (E_AS = 110 mJ vs. STD80N3LL's 220 mJ)	Preferred where gate drive margin is critical and avalanche stress is minimal
DMT6009LPS	R_DS(on) = 4.5 mΩ (V_GS = 10 V); Q_g = 14.5 nC; same DPAK footprint	Lower gate charge improves switching efficiency above 200 kHz but rated only to 150 °C T_j	Optimal for high-frequency SMPS where thermal derating below 175 °C is acceptable

Compared with IRF8726PbF and DMT6009LPS, the STD80N3LL offers superior junction temperature range (−55 to 175 °C), higher avalanche ruggedness, and tighter R_DS(on) tolerance - making it preferred for automotive under-hood and industrial motor control where reliability under transient stress is critical.

Availability

STD80N3LL is available at Aetrix Electronics and suitable for DC-DC converters, automotive body electronics, and industrial motor drives requiring stable component supply across extended temperature ranges and multi-year production cycles.

Supply support for STD80N3LL 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 for automotive, industrial, and consumer markets.

The STD80N3LL belongs to ST's STripFET™ F7 power MOSFET family, engineered specifically for high-current, low-voltage switching in space-constrained and thermally demanding applications.

FAQ

What is the maximum safe operating temperature for STD80N3LL?

The STD80N3LL has a specified operating junction temperature range of −55 °C to +175 °C. Its thermal resistance junction-to-case is 2 °C/W, so sustained 80 A operation requires effective heatsinking or PCB copper area to maintain T_j ≤ 175 °C under worst-case ambient and power dissipation conditions.

Can STD80N3LL be driven directly from a 3.3 V microcontroller?

Yes - with V_GS(th) ranging from 1 V to 2.5 V, the STD80N3LL begins conducting at 3.3 V gate drive. However, full enhancement (to achieve 4 mΩ R_DS(on)) requires ≥10 V V_GS; a level-shifting gate driver is recommended for optimal conduction and switching performance.

Does STD80N3LL include built-in ESD protection?

No - the STD80N3LL does not integrate on-die ESD protection diodes. Its gate oxide is sensitive to electrostatic discharge; proper handling per JEDEC JS-001 and PCB-level protection (e.g., series gate resistor + TVS clamp) are required during assembly and operation.

Is the DPAK package lead-free and RoHS-compliant?

Yes - the STD80N3LL is manufactured in an ECOPACK®-compliant DPAK package, meeting RoHS Directive 2011/65/EU and being halogen-free per IEC 61249-2-21, with lead-free solderability verified per J-STD-020.

STD80N3LL Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

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

Packaging:: Tape & Reel (TR)

Product Status:: Active

FET Type:: N-Channel

Technology:: MOSFET (Metal Oxide)

Drain to Source Voltage (Vdss):: 30 V

Current - Continuous Drain (Id) @ 25°C:: 80A (Tc)

Drive Voltage (Max Rds On, Min Rds On):: 4.5V, 10V

Rds On (Max) @ Id, Vgs:: 5.2mOhm @ 40A, 10V

Vgs(th) (Max) @ Id:: 2.5V @ 250µA

Gate Charge (Qg) (Max) @ Vgs:: 18 nC @ 4.5 V

Vgs (Max):: ±20V

Input Capacitance (Ciss) (Max) @ Vds:: 1640 pF @ 25 V

FET Feature:: -

Power Dissipation (Max):: 75W (Tc)

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: TO-252 (DPAK)

STD80N3LL FAQ

1.How can I place an order for STD80N3LL through Aetrix?

Please submit a Request for Quotation (RFQ) for STD80N3LL 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 STD80N3LL reliable?

The price and inventory of STD80N3LL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STD80N3LL is usually 5 days.

3.What payment methods are accepted for STD80N3LL?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STD80N3LL transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for STD80N3LL?

STD80N3LL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your STD80N3LL 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 STD80N3LL?

For technical support, including STD80N3LL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STD80N3LL requirements.

6.How does Aetrix verify that STD80N3LL is sourced from the original manufacturer or authorized distributors?

All STD80N3LL 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 STD80N3LL meets industry standards.

7.What is the process for return or replacement of STD80N3LL?

All STD80N3LL units undergo pre-shipment inspection (PSI). If there is an issue with STD80N3LL, 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 STD80N3LL part is unused and in its original packaging.

Return procedure for STD80N3LL:

1.Submit a request within 90 days.

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

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