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Diodes Incorporated DMTH4002SCTBQ-13
- Part No.:
- DMTH4002SCTBQ-13
- Manufacturer:
- Diodes Incorporated
- Category:
- FETs, MOSFETs
- Package:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Datasheet:
-
DMTH4002SCTBQ-13.pdf
- Description:
- MOSFET BVDSS: 31V~40V TO263 T&R
- Quantity:
- Payment:
- Shipping:
Inventory:3,070
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Product details
Overview
DMTH4002SCTBQ-13 from Diodes Incorporated is an AEC-Q101-qualified N-channel enhancement-mode MOSFET in TO263AB (D2PAK) package, rated for 40V VDSS, 3 mΩ RDS(ON) @ VGS = 10V, and 192A continuous drain current at TC = +25°C. It operates up to +175°C junction temperature and is designed for high-reliability automotive power switching in engine management and DC-DC converters.
For engineers reviewing the DMTH4002SCTBQ-13 datasheet, DMTH4002SCTBQ-13 pinout, DMTH4002SCTBQ-13 application, or DMTH4002SCTBQ-13 equivalent, key selection criteria include its 0.9°C/W RθJC, 100% production-tested UIS robustness, low Qg (77.5 nC), and AEC-Q101 qualification with PPAP support for automotive-grade supply chain traceability.
Technical Context
This MOSFET employs a trench-gate silicon process optimized for low conduction and switching losses in high-current, high-temperature automotive environments. Its 3 mΩ RDS(ON) at 10V gate drive enables efficient 12V/24V system-level power conversion, while the 175°C rating supports under-hood placement without derating penalties.
The device integrates a fast, low-VSD body diode (0.8–1.2 V @ 20A) and exhibits controlled dynamic parameters: Ciss = 7180 pF, Coss = 1698 pF, and Crss = 17 pF at VDS = 20V, supporting stable hard-switching operation in synchronous rectification and motor control topologies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDSS | 40 V - Maximum blocking voltage for 12V/24V automotive bus applications with margin against load-dump transients. |
| RDS(ON) | 3 mΩ @ VGS = 10V - Enables <1.5 W conduction loss at 90A, critical for thermal management in compact power modules. |
| ID (continuous) | 192 A @ TC = +25°C - Supports high-current DC-DC stages without parallel devices in engine control units. |
| Qg | 77.5 nC - Reduces gate driver power demand and switching transition time in high-frequency (>100 kHz) converters. |
| RθJC | 0.9 °C/W - Allows direct thermal coupling to heatsink via exposed drain pad, enabling >150W dissipation with minimal ΔT. |
| TJ max | +175°C - Qualified for sustained operation in under-hood environments where ambient exceeds +125°C. |
| AEC-Q101 | Qualified - Meets automotive stress-test requirements including HTGB, HTRB, and UIS, with full PPAP documentation support. |
Pinout & Package
Package: TO263AB (D2PAK), thermally enhanced surface-mount package with exposed drain pad on bottom side for direct heatsink attachment. Molded green compound, UL 94V-0 rated, 1.7 g typical weight.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (Source) | Source terminal (internal connection to source region) | Primary return path for load current; tied to PCB ground plane for low-inductance routing. |
| Pin 2 (Gate) | Control input for channel conduction | High-impedance input requiring <1.04 Ω gate resistance for optimal EMI and dV/dt control. |
| Pin 3 (Drain) | Drain terminal (internally connected to exposed metal pad) | Carries full load current and serves as primary thermal interface-must be soldered to large copper area or heatsink. |
Key Features
| Feature | Design Value |
|---|---|
| 100% UIS tested in production | Guarantees avalanche energy handling (EAS = 551.8 mJ) without parameter shift-critical for inductive load switching reliability. |
| Low RDS(ON) at high temperature | RDS(ON) increases only 2.2× from 25°C to 175°C (normalized curve Fig. 6), maintaining efficiency in hot environments. |
| Lead-free & halogen-free | Meets RoHS 3 and automotive "Green" standards (<900 ppm Br/Cl, <1000 ppm Sb), compliant with IATF 16949 manufacturing. |
| Optimized dynamic capacitance ratio | Crss/Ciss = 0.0024 enables stable Miller-effect immunity and predictable turn-off behavior in high-dV/dt systems. |
Applications
| Engine Management Systems | Body Control Modules |
|---|---|
Use Scenario: High-side switching of fuel injectors and ignition coils in gasoline/diesel ECUs. IC Role / Device Role / Timing Role: Power switch controlling pulsed 12V loads with <10 µs turn-on/off times and 760A peak surge capability. Use Value: Low RDS(ON) minimizes heat generation during extended idle operation; 175°C rating avoids thermal shutdown in sealed ECU housings. |
Use Scenario: Load switching for HVAC actuators, window lift motors, and lighting drivers in vehicle cabin electronics. IC Role / Device Role / Timing Role: Robust N-channel high-current switch replacing relays, driven directly by microcontroller GPIO with external gate resistor. Use Value: 100% UIS qualification ensures survival during motor stall events and inductive kickback without snubbers. |
| Automotive DC-DC Converters | On-Board Chargers (OBC) Auxiliary Supplies |
Use Scenario: Primary-side synchronous rectifier in 400V-to-12V isolated buck converters for ADAS domain controllers. IC Role / Device Role / Timing Role: Low-loss power FET operating at 200–500 kHz with tight gate charge control (Qg = 77.5 nC). Use Value: Coss = 1698 pF and low Qgd/Qgs ratio reduce switching losses and improve ZVS margin in resonant topologies. |
Use Scenario: Secondary-side 12V/24V power distribution in bidirectional OBC auxiliary supplies powering cooling fans and CAN transceivers. IC Role / Device Role / Timing Role: High-reliability load switch with integrated thermal protection via junction sensing and remote temperature feedback. Use Value: RθJC = 0.9°C/W enables direct thermal monitoring using external sensor on heatsink, supporting ASIL-B functional safety compliance. |
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, 2.2 mΩ @ 10V, 220A, TO263-7L; higher current rating but larger gate charge (95 nC) and no AEC-Q101 documentation in public datasheet. | Preferred for higher-current inverters where gate drive strength permits; less suitable for space-constrained ECUs needing minimal Qg. | Select when peak current >200A is required and thermal design accommodates higher switching loss. |
| IXTP180N045T | 45V, 2.2 mΩ @ 10V, 180A, TO220AB; lower thermal performance (RθJC = 1.2°C/W), not AEC-Q101 qualified, leaded package. | Suitable for industrial DC-DC where automotive qualification is unnecessary and through-hole assembly is preferred. | Choose only for non-automotive designs with relaxed thermal and qualification requirements. |
Compared with STL220N4F7AG and IXTP180N045T, DMTH4002SCTBQ-13 delivers superior thermal efficiency (0.9°C/W vs. ≥1.2°C/W), guaranteed AEC-Q101 compliance with PPAP, and optimized Qg/RDS(ON) balance for high-frequency automotive switching-making it the preferred choice for space- and reliability-critical under-hood applications.
Availability
DMTH4002SCTBQ-13 is available at Aetrix Electronics and suitable for engine management systems, body control electronics, and automotive DC-DC converters requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for DMTH4002SCTBQ-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 with ISO/TS 16949 and IATF 16949 certified facilities.
This MOSFET belongs to Diodes' Automotive Power Solutions product line, engineered specifically for AEC-Q101-compliant power switching in harsh-temperature environments such as engine bays and battery management subsystems.
FAQ
Is DMTH4002SCTBQ-13 qualified for automotive use?
Yes. DMTH4002SCTBQ-13 is fully AEC-Q101 qualified, manufactured in IATF 16949-certified facilities, and supported by PPAP documentation. It undergoes 100% production UIS testing and meets automotive thermal, humidity, and mechanical stress requirements per the DS40950 datasheet.
What is the recommended gate resistor value for optimal switching performance?
A 3.5 Ω gate resistor is used in the datasheet's switching time characterization (tD(ON), tR, etc.) and provides balanced EMI suppression and switching speed. For 200–500 kHz operation, 2.2–4.7 Ω is typical; values below 2 Ω increase dI/dt-induced ringing and require careful PCB layout.
Can DMTH4002SCTBQ-13 replace older TO220-based MOSFETs in existing designs?
Direct replacement is not mechanical or electrical drop-in due to TO263AB's surface-mount footprint and thermal pad requirement. Layout redesign-including thermal pad copper area, solder stencil, and gate drive loop inductance-is mandatory. Electrical specs (40V, 3 mΩ) allow functional equivalence if thermal and packaging constraints are addressed.
Does this MOSFET include integrated ESD protection on the gate?
No. The DMTH4002SCTBQ-13 has no integrated gate ESD protection diode. Gate-source leakage is specified at ±100 nA (VGS = ±20V), and the absolute maximum VGS is ±20V. External gate protection (e.g., 12V Zener clamp) is required in systems with uncontrolled ESD exposure or long PCB traces.
DMTH4002SCTBQ-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- 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:
- 192A (Tc)
- Drive Voltage (Max Rds On, Min Rds On):
- 10V
- Rds On (Max) @ Id, Vgs:
- 3mOhm @ 90A, 10V
- Vgs(th) (Max) @ Id:
- 4V @ 250µA
- Gate Charge (Qg) (Max) @ Vgs:
- 77.5 nC @ 10 V
- Vgs (Max):
- ±20V
- Input Capacitance (Ciss) (Max) @ Vds:
- 7180 pF @ 20 V
- FET Feature:
- -
- Power Dissipation (Max):
- 6W (Ta), 166.7W (Tc)
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-263AB (D2PAK)
DMTH4002SCTBQ-13 FAQ
1.How can I place an order for DMTH4002SCTBQ-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for DMTH4002SCTBQ-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 DMTH4002SCTBQ-13 reliable?
The price and inventory of DMTH4002SCTBQ-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DMTH4002SCTBQ-13 is usually 5 days.
3.What payment methods are accepted for DMTH4002SCTBQ-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DMTH4002SCTBQ-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DMTH4002SCTBQ-13?
DMTH4002SCTBQ-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DMTH4002SCTBQ-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 DMTH4002SCTBQ-13?
For technical support, including DMTH4002SCTBQ-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DMTH4002SCTBQ-13 requirements.
6.How does Aetrix verify that DMTH4002SCTBQ-13 is sourced from the original manufacturer or authorized distributors?
All DMTH4002SCTBQ-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 DMTH4002SCTBQ-13 meets industry standards.
7.What is the process for return or replacement of DMTH4002SCTBQ-13?
All DMTH4002SCTBQ-13 units undergo pre-shipment inspection (PSI). If there is an issue with DMTH4002SCTBQ-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 DMTH4002SCTBQ-13 part is unused and in its original packaging.
Return procedure for DMTH4002SCTBQ-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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