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Diodes Incorporated DMTH43M7LFGQ-13
- Part No.:
- DMTH43M7LFGQ-13
- Manufacturer:
- Diodes Incorporated
- Category:
- FETs, MOSFETs
- Package:
- 8-PowerVDFN
- Datasheet:
-
DMTH43M7LFGQ-13.pdf
- Description:
- MOSFET BVDSS: 31V~40V POWERDI333
- Quantity:
- Payment:
- Shipping:
Inventory:7,405
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Product details
Overview
DMTH43M7LFGQ-13 from Diodes Incorporated is a 40V, 100A N-channel enhancement-mode MOSFET in PowerDI3333-8 package, qualified to AEC-Q101 and rated for +175°C operation. It delivers 3.0mΩ RDS(ON) at VGS = 10V and supports 100% unclamped inductive switching - designed for high-reliability automotive motor control and DC-DC converter power stages.
For engineers reviewing the DMTH43M7LFGQ-13 datasheet, DMTH43M7LFGQ-13 pinout, DMTH43M7LFGQ-13 application, or DMTH43M7LFGQ-13 equivalent, key selection criteria include its low RDS(ON) at 5V gate drive (5.0mΩ), robust thermal performance (RθJC = 2.3°C/W), AEC-Q101 qualification, and PowerDI3333-8 thermal pad layout compatibility.
Technical Context
This MOSFET employs a trench-gate silicon process optimized for low conduction loss and fast switching in high-current automotive power stages. Its 1.9mΩ typical RDS(ON) at VGS = 10V and 2.5mΩ at VGS = 5V enable efficient operation across wide gate voltage ranges, while the 30nC total gate charge (QG) balances switching speed and drive strength requirements.
The device integrates a robust body diode with 39.7nC reverse recovery charge (QRR) and 39.5ns tRR, supporting synchronous rectification and freewheeling in hard-switched topologies. Its 175°C maximum junction temperature and 2.3°C/W junction-to-case thermal resistance are validated under IATF 16949 manufacturing controls.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDSS | 40V - Maximum drain-source blocking voltage for 12V/24V automotive bus applications. |
| RDS(ON) Max | 3.0mΩ @ VGS = 10V - Enables <1.2W conduction loss at 20A continuous current. |
| ID Max | 100A @ TC = +25°C - Supports high-current motor phase legs and DC-DC primary switches. |
| QG | 30nC - Determines gate driver current requirement (~1.5A peak for 20ns rise time). |
| RθJC | 2.3°C/W - Allows direct thermal coupling to heatsink via exposed drain pad in PowerDI3333-8. |
| TJ Max | +175°C - Certified for under-hood environments including engine control units and battery management systems. |
| EAS | 185.3mJ - Validates ruggedness against inductive load transients without external snubbers. |
Pinout & Package
Package: PowerDI®3333-8 - thermally enhanced 8-pin surface-mount package with exposed drain pad (pins 4–8) for low-impedance heat transfer. Molded green compound, RoHS-compliant matte tin finish on copper leadframe.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Gate | Control input; requires 10V nominal drive for full enhancement; threshold 1–2.5V. |
| 2,3 | Source | Power return path; tied to PCB ground plane; forms common reference for gate drive. |
| 4–8 | Drain (Exposed Pad) | Main current path and primary thermal interface; must be soldered to ≥1-in² copper area. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 Qualified + PPAP Capable | Validated for automotive production use with full change control and IATF 16949 traceability. |
| 100% UIS Tested in Production | Each unit screened for unclamped inductive switching robustness - eliminates field failure risk in motor drives. |
| Low QGD × RDS(ON) Figure of Merit | 10.8 mΩ·nC - minimizes trade-off between switching loss and conduction loss in high-frequency converters. |
| +175°C Junction Rating | Enables operation in engine bay locations where ambient exceeds 125°C without derating. |
| Halogen & Antimony Free ("Green") | Meets automotive environmental compliance: Br+Cl <1500ppm, Sb <1000ppm. |
Applications
| Electric Power Steering (EPS) | 48V Mild Hybrid DC-DC Converter |
|---|---|
|
Use Scenario: High-current H-bridge driving 3-phase EPS motor with regenerative braking. IC Role / Device Role / Timing Role: Low-side and high-side switching element in 30–50kHz PWM power stage. Use Value: 3.0mΩ RDS(ON) reduces conduction loss by >35% vs. legacy 4.5mΩ MOSFETs, extending EPS module thermal margin. |
Use Scenario: Primary-side synchronous rectifier in bidirectional 48V–12V DC-DC converter for mild hybrid vehicles. IC Role / Device Role / Timing Role: High-current, high-duty-cycle switch handling up to 78A at 5V gate drive. Use Value: 5.0mΩ RDS(ON) at VGS = 5V enables direct control from automotive MCU GPIOs without level-shifting. |
| Automotive HVAC Blower Motor Control | On-Board Charger (OBC) Auxiliary Power Supply |
|
Use Scenario: PWM-controlled brushed DC blower motor in cabin climate system. IC Role / Device Role / Timing Role: Single-ended switch with integrated body diode conducting freewheel current during PWM off-time. Use Value: 39.7nC QRR and 0.8–1.0V VSD minimize diode conduction loss and EMI during commutation. |
Use Scenario: Primary switch in auxiliary 12V supply derived from OBC high-voltage DC bus. IC Role / Device Role / Timing Role: 40V-rated switch operating at 100–200kHz in flyback or forward topology. Use Value: 185.3mJ EAS withstands voltage spikes from transformer leakage inductance without clamping. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar N-channel automotive power MOSFET applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STL220N4F7AG | 40V, 220A, 1.4mΩ @ 10V, PowerFLAT 5x6 package; higher current rating but larger footprint. | Requires larger PCB area and different thermal pad layout; not drop-in compatible with PowerDI3333-8 land pattern. | Prefer when >100A peak current or lower RDS(ON) is required and board space permits. |
| IXTP110N045T | 45V, 110A, 4.5mΩ @ 10V, TO-220 package; through-hole, no exposed thermal pad. | Lacks AEC-Q101 qualification; unsuitable for automated SMT assembly or under-hood thermal cycling. | Select only for non-automotive industrial prototypes where qualification and thermal performance are secondary. |
Compared with STL220N4F7AG and IXTP110N045T, DMTH43M7LFGQ-13 uniquely combines AEC-Q101 qualification, PowerDI3333-8 thermal efficiency, and 5V logic-level compatibility - making it optimal for space-constrained, high-reliability automotive power stages where both manufacturability and ruggedness are mandatory.
Availability
DMTH43M7LFGQ-13 is available at Aetrix Electronics and suitable for electric power steering, 48V mild hybrid DC-DC converters, and automotive HVAC blower motor control requiring stable component supply across extended vehicle lifecycles.
Supply support for DMTH43M7LFGQ-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-reliability components for automotive, industrial, and computing markets.
This MOSFET belongs to Diodes' Automotive Power Solutions product line, engineered specifically for AEC-Q101-compliant, high-temperature power switching in safety-critical vehicle subsystems.
FAQ
What is the maximum continuous drain current at +100°C case temperature?
The DMTH43M7LFGQ-13 supports 85A continuous drain current at TC = +100°C, per the Absolute Maximum Ratings table. This derating reflects thermal limits of the PowerDI3333-8 package and ensures safe operation in high-ambient automotive environments such as engine control modules.
Is the body diode suitable for synchronous rectification in a 200kHz DC-DC converter?
Yes - the body diode has 39.5ns reverse recovery time (tRR) and 39.7nC reverse recovery charge (QRR) at IF = 15A, enabling reliable synchronous rectification up to 250kHz. However, external Schottky diodes are recommended for highest-efficiency designs above 300kHz.
Does this part require gate resistors for EMI control in motor drive applications?
Yes - the 30nC total gate charge and 1.9Ω gate resistance necessitate an external series gate resistor (typically 2.2–4.7Ω) to control dV/dt and reduce EMI in motor phase-leg configurations. Layout must minimize gate loop inductance to prevent oscillation.
How is moisture sensitivity handled for reflow soldering?
The DMTH43M7LFGQ-13 is rated Moisture Sensitivity Level 1 per J-STD-020, meaning it may be stored indefinitely at ≤30°C/60% RH and subjected to standard Pb-free reflow profiles without baking - simplifying SMT assembly for automotive production lines.
DMTH43M7LFGQ-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:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- POWERDI3333-8
DMTH43M7LFGQ-13 FAQ
1.How can I place an order for DMTH43M7LFGQ-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for DMTH43M7LFGQ-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 DMTH43M7LFGQ-13 reliable?
The price and inventory of DMTH43M7LFGQ-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DMTH43M7LFGQ-13 is usually 5 days.
3.What payment methods are accepted for DMTH43M7LFGQ-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DMTH43M7LFGQ-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DMTH43M7LFGQ-13?
DMTH43M7LFGQ-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DMTH43M7LFGQ-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 DMTH43M7LFGQ-13?
For technical support, including DMTH43M7LFGQ-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DMTH43M7LFGQ-13 requirements.
6.How does Aetrix verify that DMTH43M7LFGQ-13 is sourced from the original manufacturer or authorized distributors?
All DMTH43M7LFGQ-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 DMTH43M7LFGQ-13 meets industry standards.
7.What is the process for return or replacement of DMTH43M7LFGQ-13?
All DMTH43M7LFGQ-13 units undergo pre-shipment inspection (PSI). If there is an issue with DMTH43M7LFGQ-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 DMTH43M7LFGQ-13 part is unused and in its original packaging.
Return procedure for DMTH43M7LFGQ-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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