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

Diodes Incorporated DMTH43M8LFVWQ-7

Name: DMTH43M8LFVWQ-7
Brand: Diodes Incorporated
SKU: DMTH43M8LFVWQ-7
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: DMTH43M8LFVWQ-7

Manufacturer:: Diodes Incorporated

Category:: FETs, MOSFETs

Package:: 8-PowerVDFN

Datasheet:: DMTH43M8LFVWQ-7.pdf

Description:: MOSFET BVDSS: 31V~40V POWERDI333

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Product details

Overview

DMTH43M8LFVWQ-7 from Diodes Incorporated is an AEC-Q101-qualified 40V N-channel enhancement-mode MOSFET in PowerDI3333-8 package, delivering 4.3mΩ R_DS(ON) at V_GS = 10V and 96A continuous drain current at T_C = +25°C. Rated for +175°C operation and featuring wettable flanks for optical inspection, it serves as a high-reliability power switch in automotive DC-DC converters and backlighting systems.

For engineers reviewing the DMTH43M8LFVWQ-7 datasheet, DMTH43M8LFVWQ-7 pinout, DMTH43M8LFVWQ-7 application, or DMTH43M8LFVWQ-7 equivalent, key selection criteria include its 2.3°C/W R_θJC, 100% production-tested UIS robustness, low Q_gd × R_DS(ON) figure-of-merit, and AEC-Q101 qualification with PPAP support.

Technical Context

This MOSFET employs a trench-gate silicon process optimized for low conduction loss and fast switching in high-temperature automotive environments. Its gate threshold voltage (1–2.5V) enables compatibility with 3.3V and 5V logic-level drive, while the 36.9nC total gate charge at V_GS = 10V supports efficient PWM control in synchronous buck stages.

The device integrates a robust body diode with 36ns reverse recovery time and 36nC Q_RR, validated for continuous freewheeling in hard-switched topologies. Thermal design is enabled by the exposed drain pad and 2.3°C/W junction-to-case resistance, allowing direct thermal coupling to PCB copper or heatsinks.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DSS	40V - Maximum blocking voltage for 12V/24V automotive rail protection and DC-DC primary-side switching
R_DS(ON) @ 10V	4.3mΩ - Enables ≤0.86W conduction loss at 96A, critical for thermally constrained engine bay modules
I_D Continuous @ T_C=25°C	96A - Supports high-current power delivery in compact form factor without external heatsink
T_J Operating Range	−55°C to +175°C - Certified for under-hood applications including transmission control units and ADAS ECUs
Q_gd × R_DS(ON)	Excellent FOM - Reduces switching loss and EMI in high-frequency (>500kHz) converter designs
E_AS	83.2mJ - Confirmed avalanche energy rating ensures reliability during load dump or inductive turn-off transients
R_θJC	2.3°C/W - Enables precise junction temperature estimation when mounted on thermally enhanced PCBs

Pinout & Package

Package: PowerDI3333-8 (SWP), surface-mount, wettable flank, exposed drain pad for thermal and electrical connection.

Pin/Terminal	Circuit Role	Design Meaning
Pin 1 (G)	Gate	Control terminal; accepts 0–10V logic-level drive; 2.4Ω gate resistance minimizes ringing
Pins 2–4, 6–8 (S)	Source	Power return path; multiple parallel pins reduce source inductance and improve current sharing
Pins 5, 7 (D)	Drain	Main power output; connected to exposed copper pad on bottom for thermal dissipation and low-inductance routing

Key Features

Feature	Design Value
+175°C rated operation	Validated continuous operation up to junction temperature limit-enables placement near heat sources without derating
100% UIS tested in production	Every unit undergoes unclamped inductive switching stress-guarantees ruggedness against inductive load transients
Wettable flank terminals	Side-plated leads enable automated optical inspection (AOI) of solder joint integrity on bottom-side reflow
AEC-Q101 qualified + PPAP capable	Fully traceable manufacturing in IATF 16949-certified facilities-meets automotive change control and documentation requirements
Halogen- and antimony-free "Green" construction	<900ppm Br, <900ppm Cl, <1000ppm Sb-complies with global environmental regulations including RoHS 3

Applications

Automotive DC-DC Converters

LED Backlighting Drivers

Use Scenario: High-efficiency 48V-to-12V bidirectional buck-boost conversion in vehicle domain controllers.

IC Role / Device Role / Timing Role: Primary-side synchronous rectifier MOSFET handling continuous 60A+ output current.

Use Value: 4.3mΩ R_DS(ON) reduces conduction loss by >35% versus legacy 6mΩ parts, enabling smaller heatsinks and higher power density.

Use Scenario: Constant-current LED string regulation in instrument cluster and center display backlighting.

IC Role / Device Role / Timing Role: Low-side PWM switch controlling up to 12A per channel with fast turn-on/off timing.

Use Value: 7.1ns turn-on delay and 13ns fall time ensure precise dimming resolution and minimal current overshoot at 1–20kHz PWM frequencies.

Engine Control Unit Power Switching

Body Control Module Load Drivers

Use Scenario: High-side switching of fuel injector solenoids and ignition coils in gasoline/diesel ECUs.

IC Role / Device Role / Timing Role: Robust power switch with integrated avalanche capability for inductive load commutation.

Use Value: 83.2mJ E_AS and 12.9A I_AS eliminate need for external snubbers in 12V/24V systems operating up to +150°C ambient.

Use Scenario: Driving resistive and inductive loads (e.g., window motors, seat actuators, HVAC valves) in BCMs.

IC Role / Device Role / Timing Role: Protected low-side driver with overtemperature and short-circuit resilience.

Use Value: +175°C rating allows direct mounting on BCM PCBs without thermal isolation, simplifying layout and reducing BOM count.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
STL220N4F7AG	40V, 2.2mΩ @ 10V, PowerFLAT 5x6; lower R_DS(ON) but no wettable flanks	Requires X-ray inspection instead of AOI; not AEC-Q101 certified for all variants	Select when ultra-low conduction loss is prioritized over automated optical inspection capability
IPB180N04S4-02	40V, 1.8mΩ @ 10V, TO-leadless; higher current rating (180A) but larger footprint and no +175°C rating	Rated only to +150°C; unsuitable for under-hood applications exceeding 150°C ambient	Select for non-automotive industrial DC-DC where thermal margin exceeds 25°C and AOI is not required

Compared with STL220N4F7AG and IPB180N04S4-02, the DMTH43M8LFVWQ-7 uniquely combines AEC-Q101 qualification, +175°C operation, wettable flanks, and production-tested UIS-making it the only choice for space-constrained, high-reliability automotive power stages requiring full traceability and optical inspectability.

Availability

DMTH43M8LFVWQ-7 is available at Aetrix Electronics and suitable for automotive DC-DC converters, LED backlighting drivers, and engine control unit power switching requiring stable component supply across extended temperature ranges and rigorous quality compliance.

Supply support for DMTH43M8LFVWQ-7 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, specializing in high-reliability components for automotive, industrial, and computing markets.

This MOSFET belongs to Diodes' Automotive Power portfolio, engineered specifically for AEC-Q101-compliant high-temperature switching in safety-critical vehicle subsystems such as ADAS, powertrain, and body electronics.

FAQ

What is the maximum allowable gate-source voltage for DMTH43M8LFVWQ-7?

The absolute maximum gate-source voltage is ±20V. Operation beyond this range risks permanent gate oxide damage. For reliable 3.3V or 5V logic-level drive, the gate threshold voltage (1–2.5V) ensures strong turn-on with standard microcontroller GPIOs, while the 2.4Ω internal gate resistance helps dampen oscillations during fast edge transitions.

Does DMTH43M8LFVWQ-7 require a gate driver IC in automotive applications?

No gate driver IC is required for most automotive applications. With a gate threshold of 1–2.5V and total gate charge of 36.9nC at 10V, it is fully compatible with 3.3V/5V MCU outputs driving moderate switching frequencies (<500kHz). However, for high-frequency (>1MHz) or high-duty-cycle synchronous rectification, a dedicated driver improves efficiency and reduces gate dissipation.

How is the wettable flank feature implemented on DMTH43M8LFVWQ-7?

The PowerDI3333-8 package features side-plated (wettable) leads on Pins 1 (G), 2–4 and 6–8 (S), and 5/7 (D), enabling solder to wick up the vertical sidewalls during reflow. This allows automated optical inspection (AOI) systems to verify solder fillet formation and joint completeness-critical for zero-defect automotive manufacturing without requiring X-ray.

Is DMTH43M8LFVWQ-7 suitable for use in synchronous rectification topologies?

Yes-it is explicitly designed for synchronous rectification in automotive DC-DC converters. Its low R_DS(ON) (4.3mΩ), fast switching times (t_D(ON) = 7.1ns, t_F = 13ns), and low Q_gd/Q_g ratio minimize shoot-through risk and conduction losses. The body diode's 36ns t_RR and 36nC Q_RR further support clean commutation in high-frequency buck and boost stages.

DMTH43M8LFVWQ-7 Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: -

Package/Case:: 8-PowerVDFN

Packaging:: Tape & Reel (TR)

Product Status:: Active

FET Type:: N-Channel

Technology:: MOSFET (Metal Oxide)

Drain to Source Voltage (Vdss):: 40 V

Current - Continuous Drain (Id) @ 25°C:: 23A (Ta), 96A (Tc)

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

Rds On (Max) @ Id, Vgs:: 4.3mOhm @ 20A, 10V

Vgs(th) (Max) @ Id:: 2.5V @ 250µA

Gate Charge (Qg) (Max) @ Vgs:: 36.9 nC @ 10 V

Vgs (Max):: ±20V

Input Capacitance (Ciss) (Max) @ Vds:: 2737 pF @ 20 V

FET Feature:: -

Power Dissipation (Max):: 3.6W (Ta), 65W (Tc)

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

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Surface Mount, Wettable Flank

Supplier Device Package:: PowerDI3333-8 (SWP) Type UX

DMTH43M8LFVWQ-7 FAQ

1.How can I place an order for DMTH43M8LFVWQ-7 through Aetrix?

Please submit a Request for Quotation (RFQ) for DMTH43M8LFVWQ-7 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 DMTH43M8LFVWQ-7 reliable?

The price and inventory of DMTH43M8LFVWQ-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DMTH43M8LFVWQ-7 is usually 5 days.

3.What payment methods are accepted for DMTH43M8LFVWQ-7?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DMTH43M8LFVWQ-7 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for DMTH43M8LFVWQ-7?

DMTH43M8LFVWQ-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your DMTH43M8LFVWQ-7 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 DMTH43M8LFVWQ-7?

For technical support, including DMTH43M8LFVWQ-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DMTH43M8LFVWQ-7 requirements.

6.How does Aetrix verify that DMTH43M8LFVWQ-7 is sourced from the original manufacturer or authorized distributors?

All DMTH43M8LFVWQ-7 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 DMTH43M8LFVWQ-7 meets industry standards.

7.What is the process for return or replacement of DMTH43M8LFVWQ-7?

All DMTH43M8LFVWQ-7 units undergo pre-shipment inspection (PSI). If there is an issue with DMTH43M8LFVWQ-7, 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 DMTH43M8LFVWQ-7 part is unused and in its original packaging.

Return procedure for DMTH43M8LFVWQ-7:

1.Submit a request within 90 days.

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

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