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

Diodes Incorporated DMTH46M7SFVWQ-7

Name: DMTH46M7SFVWQ-7
Brand: Diodes Incorporated
SKU: DMTH46M7SFVWQ-7
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: DMTH46M7SFVWQ-7

Manufacturer:: Diodes Incorporated

Category:: FETs, MOSFETs

Package:: 8-PowerVDFN

Datasheet:: DMTH46M7SFVWQ-7.pdf

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

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Product details

Overview

DMTH46M7SFVWQ-7 from Diodes Incorporated is an AEC-Q101 qualified 40V N-channel enhancement-mode MOSFET in PowerDI3333-8 package, rated for continuous drain current of 67.2A at TC = +25°C, R_DS(ON) = 7.4mΩ @ V_GS = 10V, and operation up to +175°C junction temperature. It serves as a high-reliability power switch in automotive motor controls and DC-DC converters.

For engineers reviewing the DMTH46M7SFVWQ-7 datasheet, DMTH46M7SFVWQ-7 pinout, DMTH46M7SFVWQ-7 application, or DMTH46M7SFVWQ-7 equivalent, this page delivers verified electrical parameters, thermal performance data, wettable flank package details, and AEC-Q101 compliance context essential for automotive-grade power design validation.

Technical Context

This MOSFET employs a trench-gate silicon process optimized for low R_DS(ON) and high UIS robustness, with Q_gd/Q_g ratio of 0.35 enabling fast, controllable switching in hard-switched topologies. Its 2.75°C/W R_θJC supports direct thermal coupling to PCB copper or heatsinks.

The device features a body diode with t_RR = 105ns and Q_RR = 229nC at di/dt = 300A/μs, suitable for synchronous rectification and freewheeling in 48V automotive systems. Gate threshold voltage (2–4V) ensures stable turn-on under wide-temperature supply conditions.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DSS	40V - Maximum blocking voltage for 12V/48V automotive bus-side switching
R_DS(ON)	7.4mΩ @ V_GS = 10V - Enables <1.3W conduction loss at 67.2A, reducing thermal load in compact modules
I_D (TC = +25°C)	67.2A - Supports high-current motor phase legs and primary-side switches in buck converters
T_J Range	−55°C to +175°C - Validated for under-hood environments including engine control units and battery management systems
E_AS	35.3mJ - Confirmed avalanche energy rating ensures reliability during inductive load switching transients
Q_g	14.8nC - Low gate charge enables efficient drive with standard 1A gate drivers at 100kHz+ switching frequencies
C_iss	1315pF - Predictable input capacitance simplifies gate driver sizing and EMI filter design

Pinout & Package

Package: PowerDI3333-8 (SWP), surface-mount, exposed drain pad, wettable flank terminals, 3.3mm × 3.3mm footprint, 0.8mm height.

Pin/Terminal	Circuit Role	Design Meaning
Pin 1 (G)	Gate	Control terminal; accepts 0–10V logic-level drive; 1.13Ω gate resistance limits ringing
Pins 2–4, 6–8 (S)	Source	Common source connection; multiple parallel pins reduce parasitic inductance in high-di/dt paths
Pins 5, 7 (D)	Drain	High-current output node; tied to exposed drain pad for thermal and electrical conduction to PCB

Key Features

Feature	Design Value
100% UIS tested in production	Guarantees minimum 26.6A avalanche current and 35.3mJ energy handling per unit-no screening waivers required
Wettable flank terminals	Enables automated optical inspection (AOI) of solder fillets on all four side edges, improving SMT yield in automotive assembly lines
+175°C rated junction	Validated operation at full current derating up to ambient +125°C in engine bay applications without thermal shutdown
AEC-Q101 qualification + PPAP support	Includes full change control documentation, IATF 16949 manufacturing, and automotive-specific failure mode analysis

Applications

Electric Power Steering (EPS)

48V Mild Hybrid DC-DC Converter

Use Scenario: High-efficiency three-phase inverter driving brushless motor in steering column assembly.

IC Role / Device Role / Timing Role: Low-side power switch in half-bridge configuration, switching at 20–50kHz with precise dead-time control.

Use Value: 7.4mΩ R_DS(ON) reduces conduction loss by >35% vs. legacy 12mΩ devices, lowering heatsink mass by 40% in space-constrained EPS modules.

Use Scenario: Primary-side synchronous rectifier in bidirectional buck-boost converter linking 48V and 12V domains.

IC Role / Device Role / Timing Role: High-current, low-R_DS(ON) switch operating in continuous conduction mode (CCM) with 100kHz PWM.

Use Value: 14.8nC Q_g allows clean gate drive with TI UCC5350, minimizing switching loss while maintaining ZVS capability across 10–100A load range.

Automotive HVAC Blower Motor Control

On-Board Charger (OBC) Auxiliary Power Supply

Use Scenario: Single-phase inverter controlling variable-speed blower fan in climate control system.

IC Role / Device Role / Timing Role: High-side switch in high-side driver IC interface, supporting 100% duty cycle operation with thermal margin.

Use Value: −55°C to +175°C rating ensures startup reliability at extreme cold soak (−40°C ambient) and sustained operation at +105°C under-hood temperatures.

Use Scenario: Primary switch in auxiliary flyback converter powering OBC control logic and gate drivers.

IC Role / Device Role / Timing Role: 40V-rated switch handling 36V input surges and transient spikes per ISO 7637-2 Pulse 5a.

Use Value: 40V V_DSS with 260A pulsed ID provides 2.5× safety margin over 36V nominal input, eliminating need for external clamping in cost-sensitive auxiliary supplies.

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	R_DS(ON) = 4.7mΩ @ 10V but larger PowerFLAT 5x6 package; higher Q_g (25nC); no wettable flank	Better conduction efficiency but requires larger board area and lacks AOI-ready terminations	Select when lowest R_DS(ON) dominates over manufacturability and thermal density
IXTQ36N40P	TO-220AB package; 400V rating; R_DS(ON) = 110mΩ @ 10V; not AEC-Q101 qualified	Industrial-grade only; unsuitable for automotive PPAP or under-hood thermal cycling	Use only in non-automotive 40V industrial motor drives where qualification is not required

Compared with STL220N4F7AG and IXTQ36N40P, DMTH46M7SFVWQ-7 uniquely balances ultra-low R_DS(ON), AEC-Q101 compliance, wettable flank AOI readiness, and PowerDI3333-8's high thermal density-making it optimal for space- and reliability-constrained automotive power stages.

Availability

DMTH46M7SFVWQ-7 is available at Aetrix Electronics and suitable for electric power steering, 48V mild hybrid DC-DC conversion, and automotive HVAC blower motor control requiring stable component supply across extended automotive product lifecycles.

Supply support for DMTH46M7SFVWQ-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 semiconductor manufacturer specializing in discrete, analog, and mixed-signal solutions, with core expertise in power management, signal integrity, and automotive-qualified components.

This MOSFET belongs to Diodes' Automotive Power portfolio, engineered specifically for high-temperature, high-reliability switching in engine control, chassis, and electrification systems-emphasizing AEC-Q101 compliance, PPAP readiness, and IATF 16949 production rigor.

FAQ

What is the maximum continuous drain current at 100°C case temperature?

The DMTH46M7SFVWQ-7 supports 47.5A continuous drain current at T_C = +100°C, as specified in its Absolute Maximum Ratings table. This value reflects thermal derating due to reduced heat dissipation capability at elevated case temperatures and must be validated against actual PCB layout thermal resistance in the target application.

Does this MOSFET require a gate resistor for automotive EMI compliance?

Yes-a 3Ω gate resistor is used in the datasheet's dynamic characterization test circuit (t_D(ON), t_R, etc.) to limit di/dt and suppress high-frequency ringing. For ISO 11452-2/4-compliant designs, a 2.2–4.7Ω non-inductive resistor is recommended to balance switching speed and radiated emissions in 12V/48V harness environments.

Is the exposed drain pad electrically isolated from the PCB ground plane?

No-the exposed drain pad is internally connected to the MOSFET's drain terminals (Pins 5 and 7) and must be soldered directly to a large copper pour serving as both thermal path and high-current return. It is not insulated and must be treated as a live high-voltage node in layout.

Can this device replace older 60V automotive MOSFETs in 48V systems?

Only if the system's maximum transient voltage remains ≤40V. While 48V nominal systems often experience 60V load-dump spikes, the DMTH46M7SFVWQ-7's 40V V_DSS requires external clamping (e.g., TVS) for ISO 7637-2 Pulse 5a compliance-unlike 60V-rated alternatives designed for direct 48V bus connection.

DMTH46M7SFVWQ-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:: 16.3A (Ta), 67.2A (Tc)

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

Rds On (Max) @ Id, Vgs:: 7.4mOhm @ 20A, 10V

Vgs(th) (Max) @ Id:: 4V @ 250µA

Gate Charge (Qg) (Max) @ Vgs:: 14.8 nC @ 10 V

Vgs (Max):: ±20V

Input Capacitance (Ciss) (Max) @ Vds:: 1315 pF @ 20 V

FET Feature:: -

Power Dissipation (Max):: 3.2W (Ta), 54.5W (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

DMTH46M7SFVWQ-7 FAQ

1.How can I place an order for DMTH46M7SFVWQ-7 through Aetrix?

Please submit a Request for Quotation (RFQ) for DMTH46M7SFVWQ-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 DMTH46M7SFVWQ-7 reliable?

The price and inventory of DMTH46M7SFVWQ-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DMTH46M7SFVWQ-7 is usually 5 days.

3.What payment methods are accepted for DMTH46M7SFVWQ-7?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DMTH46M7SFVWQ-7 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for DMTH46M7SFVWQ-7?

DMTH46M7SFVWQ-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your DMTH46M7SFVWQ-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 DMTH46M7SFVWQ-7?

For technical support, including DMTH46M7SFVWQ-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DMTH46M7SFVWQ-7 requirements.

6.How does Aetrix verify that DMTH46M7SFVWQ-7 is sourced from the original manufacturer or authorized distributors?

All DMTH46M7SFVWQ-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 DMTH46M7SFVWQ-7 meets industry standards.

7.What is the process for return or replacement of DMTH46M7SFVWQ-7?

All DMTH46M7SFVWQ-7 units undergo pre-shipment inspection (PSI). If there is an issue with DMTH46M7SFVWQ-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 DMTH46M7SFVWQ-7 part is unused and in its original packaging.

Return procedure for DMTH46M7SFVWQ-7:

1.Submit a request within 90 days.

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

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