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Diodes Incorporated DMTH43M8LFG-13
- Part No.:
- DMTH43M8LFG-13
- Manufacturer:
- Diodes Incorporated
- Category:
- FETs, MOSFETs
- Package:
- 8-PowerVDFN
- Datasheet:
-
DMTH43M8LFG-13.pdf
- Description:
- MOSFET N-CH 40V PWRDI3333
- Quantity:
- Payment:
- Shipping:
Inventory:9,125
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Product details
Overview
DMTH43M8LFG-13 from Diodes Incorporated is a 40V, 100A N-channel enhancement-mode MOSFET in PowerDI3333-8 package, featuring 3.0mΩ RDS(ON) @ VGS=10V, 175°C maximum junction temperature, and AEC-Q101 qualification. It serves as a high-current synchronous rectifier or main switch in automotive and industrial DC-DC converters.
For engineers reviewing the DMTH43M8LFG-13 datasheet, DMTH43M8LFG-13 pinout, DMTH43M8LFG-13 application, or DMTH43M8LFG-13 equivalent, key selection criteria include RDS(ON) at 5V/10V gate drive, unclamped inductive switching rating, thermal resistance (RθJC = 2.3°C/W), and body diode recovery performance (QRR = 26.6nC).
Technical Context
This MOSFET uses trench-gate silicon technology optimized for low conduction loss and fast switching trade-off. Its 100% production-tested UIS capability ensures robustness under inductive load transients, while the exposed drain pad enables direct thermal coupling to PCB copper.
The device exhibits strong temperature stability: RDS(ON) increases only 2× from 25°C to 175°C at VGS=10V (3.0mΩ → 6.0mΩ), and gate threshold voltage remains within 1.0–2.5V across -55°C to +175°C, supporting reliable turn-on in wide-temperature environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDSS | 40V - Supports 24V nominal bus systems with 66% derating margin against transient overvoltage. |
| RDS(ON) max | 3.0mΩ @ VGS=10V - Enables ≤3W conduction loss at 100A, critical for high-efficiency 48V-to-12V converters. |
| ID continuous | 100A @ TC=25°C - Requires direct thermal path to ≥1-inch² 2oz copper pad for rated current handling. |
| QG | 40.1nC - Dictates gate driver power requirement (~400mW avg. at 1MHz switching with 10V swing). |
| RθJC | 2.3°C/W - Allows <10°C junction rise above case at 65W dissipation, enabling compact heatsinkless designs. |
| EAS | 165mJ - Sustains single-pulse inductive energy up to 1mH × (18.2A)² / 2 without failure. |
| TJ max | +175°C - Permits operation in engine bay, motor control, or sealed industrial enclosures without active cooling. |
Pinout & Package
Package: PowerDI3333-8 - surface-mount, thermally enhanced plastic package with exposed drain pad (pins 5–8), 3.3mm × 3.3mm footprint, 0.8mm height, UL 94V-0 rated molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Gate | Control input; requires ≥±20V rating and low-inductance routing to minimize ringing during 10ns-scale switching. |
| 2 | Source | Power return node; tied to PCB ground plane and forms reference for gate drive and current sensing. |
| 3 | Drain | Main power output; electrically and thermally connected to pins 5–8 via internal metal frame and exposed pad. |
| 4 | Source | Second source connection; paralleled with Pin 2 to reduce source inductance in high-di/dt applications. |
| 5–8 | Drain | Exposed drain pad terminals; must be soldered to ≥1-inch² 2oz copper area for thermal and current-carrying capacity. |
Key Features
| Feature | Design Value |
|---|---|
| 100% UIS tested | Guarantees survival under worst-case inductive turn-off without external snubbers in motor drives or solenoid controls. |
| Low QGD × RDS(ON) | 26.4 mΩ·nC - Reduces switching loss and improves hard-switching efficiency in 300–500kHz DC-DC topologies. |
| AEC-Q101 qualified | Validated for automotive powertrain and chassis applications including EPS, ADAS camera power, and LED headlight drivers. |
| Green, RoHS-compliant | Halogen- and antimony-free (<900ppm Br/Cl, <1000ppm Sb); compatible with lead-free reflow profiles and long-term reliability requirements. |
Applications
| Automotive DC-DC Converter | Industrial Motor Drive Inverter |
|---|---|
Use Scenario: 48V-to-12V bidirectional converter in mild-hybrid vehicles. IC Role / Device Role / Timing Role: High-side synchronous rectifier in buck topology, switching at 300kHz with 100A peak current. Use Value: 3.0mΩ RDS(ON) reduces conduction loss by 40% vs. comparable 4.5mΩ devices, improving system efficiency from 92% to 94.2% at 5kW. |
Use Scenario: Three-phase inverter stage driving 5kW PMSM in HVAC compressors. IC Role / Device Role / Timing Role: Low-side switch in IGBT/MOSFET hybrid half-bridge, handling 93A continuous current at 100°C ambient. Use Value: 175°C rating allows full-rated current without derating in sealed enclosures, eliminating need for forced air cooling. |
| Server VRM Phase Block | Renewable Energy Battery Optimizer |
Use Scenario: Multiphase buck converter supplying CPU core voltage in AI accelerator servers. IC Role / Device Role / Timing Role: Main switch operating at 1MHz with 60A RMS current per phase, requiring low QG and stable RDS(ON). Use Value: 40.1nC total gate charge enables efficient drive with integrated DrMOS controllers, reducing gate driver losses by 22%. |
Use Scenario: DC optimizers in solar microinverters, managing partial shading mitigation between panels. IC Role / Device Role / Timing Role: High-efficiency buck-boost switch handling 40V–60V input, 30A continuous, with frequent partial-load cycling. Use Value: Body diode QRR of 26.6nC minimizes reverse recovery loss during light-load discontinuous conduction mode, extending MPPT window. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-current, high-temperature MOSFET applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| IRFH7107TRPBF | RDS(ON) = 2.7mΩ @ 10V but only rated to 150°C; no AEC-Q101 qualification; higher QG (52nC). | Suitable for commercial server VRMs but not automotive under-hood use due to lower temperature rating. | Select when cost sensitivity outweighs automotive qualification and thermal margin requirements. |
| DMTH43M8LFGQ | Identical die and RDS(ON), but automotive-grade traceability, extended temperature screening, and PPAP documentation support. | Required for Tier-1 automotive production; same electrical specs but certified for safety-critical subsystems. | Choose for production programs needing ISO/TS 16949 compliance and full AEC-Q101 test reports. |
Compared with IRFH7107TRPBF, DMTH43M8LFG-13 delivers 25°C higher thermal margin and lower gate charge, enabling smaller heatsinks and simpler drivers; versus DMTH43M8LFGQ, it lacks automotive traceability but offers identical performance at lower cost for non-automotive industrial use.
Availability
DMTH43M8LFG-13 is available at Aetrix Electronics and suitable for automotive DC-DC converters, industrial motor drives, and server VRM phase blocks requiring stable component supply, high-temperature reliability, and RoHS-compliant sourcing.
Supply support for DMTH43M8LFG-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 power management, signal integrity, and protection solutions for automotive, industrial, and computing markets.
This MOSFET belongs to Diodes' PowerFET™ family, engineered for high-current, high-temperature switching in space-constrained power conversion systems where thermal robustness and conduction efficiency are primary design constraints.
FAQ
What is the maximum continuous drain current at 100°C case temperature?
The DMTH43M8LFG-13 supports 85A continuous drain current at TC = +100°C with VGS = 10V, as specified in the Absolute Maximum Ratings table. This reflects thermal derating from the 100A rating at 25°C case temperature, maintaining safe junction temperature below 175°C under proper PCB thermal design.
Does this MOSFET require a gate resistor for EMI control?
Yes - a 1.6Ω gate resistor is used in the datasheet's dynamic characterization (tD(ON), tR) and recommended for EMI suppression. Lower values increase dv/dt and ringing; higher values slow switching and raise losses. For 300–500kHz operation, 1.0–2.2Ω is typical to balance speed, loss, and noise.
Can the body diode handle continuous forward current?
No - the body diode is rated for 3.05A continuous forward current (IS) and 400A pulsed (ISM). It is not intended for sustained conduction; its primary role is freewheeling during synchronous rectification. Extended conduction causes excessive self-heating due to VSD ≈ 0.8–1.0V and limited thermal path.
Is the PowerDI3333-8 package compatible with standard reflow profiles?
Yes - the PowerDI3333-8 package uses matte tin annealed finish over copper leadframe and is qualified for lead-free reflow per JEDEC J-STD-020, with peak temperature up to 260°C. Moisture sensitivity level is MSL1, allowing unlimited floor life before reflow without baking.
DMTH43M8LFG-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:
- 24A (Ta), 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:
- 40.1 nC @ 10 V
- Vgs (Max):
- ±20V
- Input Capacitance (Ciss) (Max) @ Vds:
- 2798 pF @ 20 V
- FET Feature:
- -
- Power Dissipation (Max):
- 2.62W (Ta), 65.2W (Tc)
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- POWERDI3333-8
DMTH43M8LFG-13 FAQ
1.How can I place an order for DMTH43M8LFG-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for DMTH43M8LFG-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 DMTH43M8LFG-13 reliable?
The price and inventory of DMTH43M8LFG-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DMTH43M8LFG-13 is usually 5 days.
3.What payment methods are accepted for DMTH43M8LFG-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DMTH43M8LFG-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DMTH43M8LFG-13?
DMTH43M8LFG-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DMTH43M8LFG-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 DMTH43M8LFG-13?
For technical support, including DMTH43M8LFG-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DMTH43M8LFG-13 requirements.
6.How does Aetrix verify that DMTH43M8LFG-13 is sourced from the original manufacturer or authorized distributors?
All DMTH43M8LFG-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 DMTH43M8LFG-13 meets industry standards.
7.What is the process for return or replacement of DMTH43M8LFG-13?
All DMTH43M8LFG-13 units undergo pre-shipment inspection (PSI). If there is an issue with DMTH43M8LFG-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 DMTH43M8LFG-13 part is unused and in its original packaging.
Return procedure for DMTH43M8LFG-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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