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

Diodes Incorporated DMTH43M7LFG-13

Name: DMTH43M7LFG-13
Brand: Diodes Incorporated
SKU: DMTH43M7LFG-13
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: DMTH43M7LFG-13

Manufacturer:: Diodes Incorporated

Category:: FETs, MOSFETs

Package:: 8-PowerVDFN

Datasheet:: DMTH43M7LFG-13.pdf

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

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Product details

Overview

DMTH43M7LFG-13 from Diodes Incorporated is a 40V, 100A N-channel enhancement-mode MOSFET in PowerDI3333-8 package, featuring 3.0mΩ R_DS(ON) @ V_GS=10V, rated for +175°C operation, and qualified for high-reliability power management including motor drives and DC-DC converters.

For engineers reviewing the DMTH43M7LFG-13 datasheet, DMTH43M7LFG-13 pinout, DMTH43M7LFG-13 application, or DMTH43M7LFG-13 equivalent, key selection criteria include R_DS(ON) at 5V/10V gate drive, unclamped inductive switching rating, thermal resistance (R_θJC = 2.3°C/W), and AEC-Q101 readiness for automotive-grade deployment.

Technical Context

This MOSFET employs trench-gate silicon technology optimized for low conduction loss and fast switching, with Q_GD × R_DS(ON) figure-of-merit of ~10.8 nC·mΩ (Q_GD = 3.6 nC, R_DS(ON) = 3.0 mΩ). Its 100% production-tested UIS capability supports robust operation under inductive load transients.

The device integrates an intrinsic body diode with t_RR = 39.5 ns and Q_RR = 39.7 nC at di/dt = 100 A/μs, enabling efficient synchronous rectification and freewheeling in buck and half-bridge topologies without external Schottky supplementation.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DSS	40 V - Maximum drain-source blocking voltage for 12V–36V bus applications.
R_DS(ON)	3.0 mΩ @ V_GS = 10 V - Enables <1.2 W conduction loss at 20 A continuous current.
I_D (max)	100 A @ T_C = +25°C - Supports high-current phase-leg switching in motor inverters.
R_θJC	2.3 °C/W - Allows >65 W power dissipation with minimal junction-to-case temperature rise.
E_AS	185.3 mJ - Confirmed avalanche energy rating ensures reliability during overvoltage events.
t_RR	39.5 ns - Fast body diode recovery reduces cross-conduction losses in hard-switched converters.
T_J range	−55°C to +175°C - Validated operation across extended industrial and under-hood automotive environments.

Pinout & Package

Package: PowerDI®3333-8 - thermally enhanced 8-pin molded plastic package with exposed drain pad for low-inductance, high-current routing and superior heat transfer to PCB copper.

Pin/Terminal	Circuit Role	Design Meaning
1, 2, 3, 4, 8, 7, 6, 5 (D, D, D, D, S, S, S, G)	Drain / Source / Gate	Pins 1–4 & 8: parallel-connected drain terminals for <1.5 mΩ interconnect path; Pins 5–7: source terminals; Pin 6: gate input with 1.9 Ω internal gate resistance.

Key Features

Feature	Design Value
+175°C rated operation	Validated continuous operation up to junction temperature limit-enables compact heatsink design in sealed enclosures.
100% UIS tested	Every unit screened for unclamped inductive switching survival-reduces field failure risk in motor control fault conditions.
Low Q_GD × R_DS(ON)	10.8 nC·mΩ - balances switching speed and conduction loss for optimal efficiency in 100–500 kHz DC-DC converters.
Green, RoHS-compliant construction	Halogen- and antimony-free molding compound (<900 ppm Br/Cl, <1000 ppm Sb) meets automotive environmental compliance requirements.
Exposed drain pad	Thermal resistance R_θJC = 2.3°C/W enables direct thermal coupling to inner-layer copper planes-critical for high-power density designs.

Applications

Motor Control Inverter

High-Efficiency DC-DC Converter

Use Scenario: 3-phase BLDC inverter stage in e-bike controller operating at 48V bus with 50A peak phase current.

IC Role / Device Role / Timing Role: High-side and low-side N-channel switch in 6-pack configuration, driven by isolated gate drivers.

Use Value: 3.0mΩ R_DS(ON) limits conduction loss to <7.5 W per FET at 50A RMS, while 175°C rating sustains performance in enclosed chassis.

Use Scenario: Primary-side synchronous rectifier in 48V-to-12V 300W buck converter for telecom power shelf.

IC Role / Device Role / Timing Role: Low-side switch with 5V gate drive compatibility, operating at 300 kHz with 50% duty cycle.

Use Value: 5.0mΩ R_DS(ON) @ V_GS=5V ensures <1.25 W loss at 15A, and fast t_F=11.1 ns minimizes dead-time losses.

Automotive Body Control Module

Industrial Power Supply OR-ing

Use Scenario: Load switch for HVAC blower motor in AEC-Q101-compliant BCM with ambient temperature up to 125°C.

IC Role / Device Role / Timing Role: Single-pole high-current load switch with integrated overtemperature protection feedback.

Use Value: Rated +175°C junction temperature allows full 100A current capability even at elevated board temperatures-no derating required.

Use Scenario: OR-ing FET in redundant 24V industrial PSU with hot-swap capability and reverse-current blocking.

IC Role / Device Role / Timing Role: Back-to-back configured N-channel MOSFET for bidirectional current blocking and low-loss forward conduction.

Use Value: Low V_SD = 0.8 V (typ.) at 20A enables <16 mW reverse leakage and <16 W forward loss-superior to discrete diode solutions.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
IPB033N04LGATMA1 (Infineon)	R_DS(ON) = 3.3 mΩ @ 10V; R_θJC = 2.5°C/W; TO-263-7 package	Larger footprint and higher thermal resistance; requires larger PCB area for equivalent cooling	Prefer when legacy TO-263 layout reuse is prioritized over thermal density.
STL220N4F7AG (STMicroelectronics)	R_DS(ON) = 2.2 mΩ @ 10V; R_θJC = 2.1°C/W; PowerFLAT 5x6 package	Lower R_DS(ON) but no production UIS testing; not AEC-Q101 qualified	Choose only for non-automotive, cost-sensitive designs where avalanche robustness is secondary.

Compared with IPB033N04LGATMA1 and STL220N4F7AG, DMTH43M7LFG-13 uniquely combines 100% UIS screening, +175°C rating, and PowerDI3333-8's ultra-low R_θJC, making it optimal for space-constrained, high-reliability motor and power supply systems requiring guaranteed ruggedness.

Availability

DMTH43M7LFG-13 is available at Aetrix Electronics and suitable for motor controls, DC-DC converters, and automotive body electronics requiring stable component supply, long-term lifecycle support, and traceable sourcing for production ramp.

Supply support for DMTH43M7LFG-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, specializing in high-efficiency power devices, signal integrity solutions, and precision timing components for industrial, automotive, and computing markets.

This MOSFET belongs to Diodes' PowerMOS™ portfolio, engineered specifically for high-current, high-temperature switching applications where low R_DS(ON), robust UIS performance, and AEC-Q101 readiness are mandatory design requirements.

FAQ

What is the maximum continuous drain current for DMTH43M7LFG-13 at 100°C case temperature?

The datasheet specifies I_D = 85 A at T_C = +100°C and V_GS = 10 V. This derating reflects thermal limitations of the PowerDI3333-8 package and must be applied in thermal simulations using R_θJC = 2.3°C/W and ambient constraints.

Does DMTH43M7LFG-13 support 5V gate drive in logic-level applications?

Yes-it delivers 78 A continuous drain current and 5.0 mΩ R_DS(ON) at V_GS = 5 V, making it compatible with standard 5V microcontroller GPIO or gate driver outputs without level-shifting circuitry.

Is DMTH43M7LFG-13 qualified to AEC-Q101 for automotive use?

While not pre-qualified, Diodes states that automotive-grade versions meeting AEC-Q101 are available upon request with PPAP documentation and IATF 16949 manufacturing-contact Diodes or Aetrix for qualification status and change-controlled part numbers.

How does the body diode performance compare to external Schottky diodes?

Its body diode has V_SD = 0.8 V (typ.) at 20 A and t_RR = 39.5 ns, offering lower forward drop than many 40V Schottkys while eliminating parasitic inductance from discrete placement-ideal for high-frequency freewheeling in synchronous buck stages.

DMTH43M7LFG-13 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:: 100A (Tc)

Drive Voltage (Max Rds On, Min Rds On):: 5V, 10V

Rds On (Max) @ Id, Vgs:: 3mOhm @ 20A, 10V

Vgs(th) (Max) @ Id:: 2.5V @ 250µA

Gate Charge (Qg) (Max) @ Vgs:: 30 nC @ 10 V

Vgs (Max):: ±20V

Input Capacitance (Ciss) (Max) @ Vds:: 2182 pF @ 20 V

FET Feature:: -

Power Dissipation (Max):: 3.5W (Ta), 65.2W (Tc)

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: POWERDI3333-8

DMTH43M7LFG-13 FAQ

1.How can I place an order for DMTH43M7LFG-13 through Aetrix?

Please submit a Request for Quotation (RFQ) for DMTH43M7LFG-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 DMTH43M7LFG-13 reliable?

The price and inventory of DMTH43M7LFG-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DMTH43M7LFG-13 is usually 5 days.

3.What payment methods are accepted for DMTH43M7LFG-13?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DMTH43M7LFG-13 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for DMTH43M7LFG-13?

DMTH43M7LFG-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your DMTH43M7LFG-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 DMTH43M7LFG-13?

For technical support, including DMTH43M7LFG-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DMTH43M7LFG-13 requirements.

6.How does Aetrix verify that DMTH43M7LFG-13 is sourced from the original manufacturer or authorized distributors?

All DMTH43M7LFG-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 DMTH43M7LFG-13 meets industry standards.

7.What is the process for return or replacement of DMTH43M7LFG-13?

All DMTH43M7LFG-13 units undergo pre-shipment inspection (PSI). If there is an issue with DMTH43M7LFG-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 DMTH43M7LFG-13 part is unused and in its original packaging.

Return procedure for DMTH43M7LFG-13:

1.Submit a request within 90 days.

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

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