Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

Home > Products > Discrete Semiconductor Products > Transistors > FETs, MOSFETs > FET, MOSFET Arrays

Diodes Incorporated DMT4031LSD-13

Name: DMT4031LSD-13
Brand: Diodes Incorporated
SKU: DMT4031LSD-13
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: DMT4031LSD-13

Manufacturer:: Diodes Incorporated

Category:: FET, MOSFET Arrays

Package:: 8-SOIC (0.154", 3.90mm Width)

Datasheet:: DMT4031LSD-13.pdf

Description:: MOSFET 2N-CH 40V 6.3A 8SO

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:8,566

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

DMT4031LSD-13 from Diodes Incorporated is a 40V N-channel enhancement-mode MOSFET in U-DFN2020-6 (Type F) package, with R_DS(ON) = 26 mΩ @ V_GS = 10 V, 6.8 A continuous drain current at T_A = +25°C, and 100% production-tested UIS robustness-used as a synchronous rectifier and main switch in compact DC-DC converters.

For engineers reviewing the DMT4031LSD-13 datasheet, DMT4031LSD-13 pinout, DMT4031LSD-13 application, or DMT4031LSD-13 equivalent, key selection criteria include low-profile thermal performance (R_θJA = 64 °C/W on 1-inch² copper), ESD-protected gate, and verified 47 mΩ R_DS(ON) @ 4.5 V for 5.2 A operation in USB PD adapters.

Technical Context

This MOSFET employs trench-gate silicon process technology to achieve low R_DS(ON) while maintaining fast switching characteristics: t_D(ON) = 2.9 ns, t_F = 5.8 ns, and Q_g = 7.0 nC @ V_GS = 10 V. Its integrated body diode has V_SD = 0.7–1.0 V @ I_S = 1 A and t_RR = 18.0 ns under 100 A/μs di/dt.

The device features NiPdAu-plated terminals, moisture sensitivity level 1 per J-STD-020, and operates across –55°C to +150°C junction temperature range. It is fully RoHS-compliant, halogen- and antimony-free ("Green"), and qualified for industrial-grade reliability without AEC-Q101 certification.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DSS	40 V - Maximum blocking voltage before avalanche onset; supports 36 V nominal bus systems with margin.
R_DS(ON) @ 10 V	26 mΩ - Enables ≤170 mW conduction loss at 6.8 A; critical for high-efficiency buck converter output stage.
R_DS(ON) @ 4.5 V	47 mΩ - Ensures usable switching in 5 V logic-driven applications like USB-C power delivery controllers.
I_D (continuous)	6.8 A @ T_A = +25°C - Sustains full load in space-constrained 12 W–20 W adapter designs.
Q_g	7.0 nC @ V_GS = 10 V - Low gate charge reduces driver power and enables >1 MHz switching without excessive losses.
E_AS	7.6 mJ - Confirmed avalanche energy rating ensures survivability during inductive turn-off transients in DC-DC topologies.
R_θJA (1″² Cu)	64 °C/W - Enables 2.0 W power dissipation at +70°C ambient; supports thermally dense PCB layouts.

Pinout & Package

U-DFN2020-6 (Type F) surface-mount package: 2.0 mm × 2.0 mm footprint, 0.6 mm profile, 4 mm² PCB area, molded green compound (UL 94V-0), NiPdAu-plated copper leadframe.

Pin/Terminal	Circuit Role	Design Meaning
Pin 1 (Top-left corner marker)	Source (S)	Primary return path for channel current; connected to thermal pad for enhanced heat transfer.
Pin 2	Gate (G)	Control terminal with ESD protection; requires <2.5 V threshold for reliable 4.5 V logic-level drive.
Pin 3	Drain (D)	High-side connection point; exposed metal pad on bottom serves as drain terminal and thermal interface.
Pin 4	Source (S)	Secondary source connection; paralleled with Pin 1 to reduce package inductance and improve current sharing.
Pin 5	Drain (D)	Secondary drain connection; electrically tied to Pin 3 and bottom thermal pad for low-inductance power routing.
Pin 6	Source (S)	Third source connection; provides additional solder joint reliability and thermal conduction to PCB ground plane.

Key Features

Feature	Design Value
100% UIS tested in production	Guarantees minimum 12.3 A single-pulse avalanche current and 7.6 mJ energy handling without parametric shift.
0.6 mm profile	Enables use in ultra-thin consumer electronics such as wireless charging pads and slim AC adapters.
ESD-protected gate	HBM rating ≥2 kV ensures robustness against assembly ESD events without external protection circuitry.
Low R_DS(ON) × Q_g figure of merit	182 Ω·nC - Balances conduction and switching losses for optimal efficiency in 300 kHz–1 MHz DC-DC converters.
Halogen- and antimony-free "Green" construction	Meets IEC 61249-2-21 and JEDEC JS709C requirements for bromine (<900 ppm), chlorine (<900 ppm), and antimony (<1000 ppm).

Applications

USB-C Power Delivery Adapters

Portable Wireless Charging Transmitters

Use Scenario: 20 W USB-C adapter with synchronous rectification in secondary-side flyback topology.

IC Role / Device Role: Main synchronous rectifier MOSFET replacing Schottky diode to reduce conduction loss and improve efficiency above 90%.

Use Value: 47 mΩ R_DS(ON) @ 4.5 V enables direct drive from controller IC's 5 V gate output, eliminating level-shifter complexity and saving board space.

Use Scenario: 15 W Qi-compliant transmitter using half-bridge inverter driving resonant tank.

IC Role / Device Role: High-side switch in compact half-bridge power stage operating at 110–205 kHz.

Use Value: 26 mΩ R_DS(ON) @ 10 V minimizes I²R loss during high-current pulses; 0.6 mm profile allows integration beneath coil assembly.

Industrial DC-DC Buck Converters

LED Driver Secondary-Side Switching

Use Scenario: 12 V input, 3.3 V/5 A output buck regulator for programmable logic controller I/O modules.

IC Role / Device Role: Low-side power switch in fixed-frequency (500 kHz) synchronous buck converter.

Use Value: 7.0 nC total gate charge enables clean 500 kHz switching with minimal driver loss; R_θJA = 64 °C/W sustains operation at 70°C ambient without heatsink.

Use Scenario: Constant-current LED driver with secondary-side synchronous rectification for architectural lighting.

IC Role / Device Role: Output rectifier MOSFET in isolated flyback with opto-coupled feedback.

Use Value: Integrated body diode with 18 ns reverse recovery time prevents shoot-through in quasi-resonant control schemes; 100% UIS testing ensures reliability during LED open-circuit fault events.

Equivalent & Alternatives

The following parts are listed as comparable options for similar N-channel MOSFET applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
DMT4031LFDF-13	Identical die and electrical specs; differs only in marking code and reel quantity (10,000 pcs vs. 10,000 pcs); same U-DFN2020-6 (Type F) package and pinout.	No functional difference; both rated for industrial temperature range and identical thermal performance.	Select DMT4031LSD-13 when requiring Diodes' standard logistics packaging with date-code traceability per JESD-22-A110.
DMN3020LFD-13	30 V V_DSS, 20 mΩ R_DS(ON) @ 4.5 V, 7.5 A I_D; smaller 1.6 mm × 1.6 mm footprint but lower voltage rating.	Not suitable for 36 V bus applications; preferred where 5 V logic drive and ultra-low R_DS(ON) dominate over voltage margin.	Choose DMN3020LFD-13 only if system maximum V_IN ≤ 28 V and board area is constrained below 3.2 mm².

Compared with DMT4031LFDF-13, DMT4031LSD-13 offers identical performance with standardized logistics labeling; versus DMN3020LFD-13, it trades 10 V voltage headroom for 7 mΩ higher R_DS(ON) @ 4.5 V but maintains compatibility with 36 V industrial power rails.

Availability

DMT4031LSD-13 is available at Aetrix Electronics and suitable for USB-C power adapters, wireless charging transmitters, and industrial DC-DC buck converters requiring stable component supply, consistent marking, and full traceability to Diodes Incorporated's IATF 16949-certified manufacturing sites.

Supply support for DMT4031LSD-13 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

Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, headquartered in Plano, Texas, with design, manufacturing, and sales operations across Asia, Europe, and the Americas.

This part belongs to Diodes' PowerMOS™ portfolio, engineered specifically for high-efficiency, space-constrained power conversion in consumer, computing, and industrial applications where low R_DS(ON), fast switching, and robust UIS performance are mandatory.

FAQ

What is the maximum allowable gate-source voltage for DMT4031LSD-13?

The absolute maximum V_GS rating is ±16 V. Operation beyond this risks permanent gate oxide damage. Recommended drive range is 0 V to +10 V for full enhancement; gate drive circuits must include clamping or limiting to prevent overshoot during fast switching transitions.

Does DMT4031LSD-13 have an integrated body diode, and what are its key parameters?

Yes-it features a monolithic body diode with forward voltage V_SD = 0.7–1.0 V at I_S = 1 A and reverse recovery time t_RR = 18.0 ns under 100 A/μs di/dt. This diode is rated for 2 A continuous and 30 A pulsed forward current, enabling use in synchronous rectification without external diodes.

Can DMT4031LSD-13 be used in automotive applications?

No-this part is not AEC-Q101 qualified and lacks PPAP documentation. While it meets industrial temperature range (–55°C to +150°C), Diodes explicitly states that automotive-grade variants require separate qualification and change control; consult Diodes' Automotive Product Definition document before deployment in vehicle systems.

What is the recommended PCB pad layout for thermal performance?

Use the manufacturer-specified U-DFN2020-6 (Type F) pad layout with a 1-inch² copper pour connected to the exposed drain pad via ≥4 thermal vias (0.3 mm diameter, filled or capped). Minimum copper weight is 2 oz; avoid solder mask over thermal pads to maximize heat transfer to internal layers or chassis ground.

DMT4031LSD-13 Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: -

Package/Case:: 8-SOIC (0.154", 3.90mm Width)

Packaging:: Tape & Reel (TR)

Product Status:: Active

Technology:: MOSFET (Metal Oxide)

Configuration:: 2 N-Channel (Dual)

FET Feature:: -

Drain to Source Voltage (Vdss):: 40V

Current - Continuous Drain (Id) @ 25°C:: 6.3A (Ta)

Rds On (Max) @ Id, Vgs:: 23mOhm @ 6A, 10V

Vgs(th) (Max) @ Id:: 2.5V @ 250µA

Gate Charge (Qg) (Max) @ Vgs:: 7nC @ 10V

Input Capacitance (Ciss) (Max) @ Vds:: 362pF @ 20V

Power - Max:: 1.2W (Ta)

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 8-SO

DMT4031LSD-13 FAQ

1.How can I place an order for DMT4031LSD-13 through Aetrix?

Please submit a Request for Quotation (RFQ) for DMT4031LSD-13 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 DMT4031LSD-13 reliable?

The price and inventory of DMT4031LSD-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DMT4031LSD-13 is usually 5 days.

3.What payment methods are accepted for DMT4031LSD-13?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DMT4031LSD-13 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for DMT4031LSD-13?

DMT4031LSD-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your DMT4031LSD-13 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 DMT4031LSD-13?

For technical support, including DMT4031LSD-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DMT4031LSD-13 requirements.

6.How does Aetrix verify that DMT4031LSD-13 is sourced from the original manufacturer or authorized distributors?

All DMT4031LSD-13 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 DMT4031LSD-13 meets industry standards.

7.What is the process for return or replacement of DMT4031LSD-13?

All DMT4031LSD-13 units undergo pre-shipment inspection (PSI). If there is an issue with DMT4031LSD-13, 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 DMT4031LSD-13 part is unused and in its original packaging.

Return procedure for DMT4031LSD-13:

1.Submit a request within 90 days.

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

Tech Hub

2026-08-21 What Is an LED Driver? Types, Circuits, Dimming, and Selection

An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…

2026-08-18 Operational Amplifier (Op Amp): Basics, Configurations, Feedback and Applications

Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…

2026-08-14 Jumper Cables: How to Use, Connect and Choose Them Safely

Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…

2026-08-11 LDO Regulator: Dropout Voltage, Noise, PSRR and Power Dissipation

LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…

2026-08-06 Conditional Access Module: CAM, CI/CI+ and DVB Security

Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…

2026-08-03 Electronic Component Obsolescence: EOL Risks, Replacement Options and Last-Time Buy Strategy

Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.

2026-07-29 18650 Battery: Voltage, Capacity, Charging and Pack Design

18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…

2026-07-27 Hall Effect Sensor: Working Principle, Types, Circuits and Applications

Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…

2026-07-20 Product Change Notification (PCN) in Electronic Components: Meaning and Supply Chain Response

Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…

2026-07-19 Blend Door Actuator: Symptoms, Location, Reset and Replacement Guide

A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…