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Diodes Incorporated DMT4005SCT
- Part No.:
- DMT4005SCT
- Manufacturer:
- Diodes Incorporated
- Category:
- FETs, MOSFETs
- Package:
- TO-220-3
- Datasheet:
-
DMT4005SCT.pdf
- Description:
- MOSFET N-CH 40V 100A TO220AB
- Quantity:
- Payment:
- Shipping:
Inventory:34
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Product details
Overview
DMT4005SCT from Diodes Incorporated is a 40V N-channel enhancement-mode MOSFET in TO220-3 package, rated for 100A continuous drain current at TC = +25°C, with RDS(ON) of 4.7mΩ at VGS = 10V and 100% unclamped inductive switching capability. It serves as a high-current power switch in automotive engine management systems and industrial DC-DC converters where low conduction loss and robust avalanche performance are required.
For engineers reviewing the DMT4005SCT datasheet, DMT4005SCT pinout, DMT4005SCT application, or DMT4005SCT equivalent, key selection criteria include its AEC-Q101 qualification, 1.2°C/W junction-to-case thermal resistance, 49.1nC total gate charge, and suitability for high-efficiency synchronous rectification and motor drive half-bridges.
Technical Context
This MOSFET employs planar silicon process technology optimized for low RDS(ON) and fast switching transitions. Its 32.5A avalanche current rating (IAS) and 52.8mJ single-pulse avalanche energy (EAS) support reliable operation under inductive load transients without external snubbers.
The device features low input capacitance (Ciss = 3062pF) and reverse transfer capacitance (Crss = 179pF), enabling efficient gate drive with minimal Miller effect. Gate threshold voltage (VGS(TH) = 2–4V) ensures compatibility with standard 3.3V/5V logic-level controllers when used with appropriate gate drivers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDS (Max) | 40V - supports 24V automotive and 36V industrial bus systems with margin |
| RDS(ON) @ VGS=10V | 4.7mΩ max - enables <1W conduction loss at 100A, reducing heatsink requirements |
| ID (Cont) @ TC=25°C | 100A - delivers high power density in TO220-3 without derating to smaller packages |
| EAS (L=0.1mH) | 52.8mJ - sustains repetitive inductive turn-off events in motor control and solenoid drivers |
| RθJC | 1.2°C/W - allows direct mounting to heatsinks for high-power thermal management |
| Qg | 49.1nC - determines gate driver current requirement (~1.6A peak for 30ns rise time) |
| AEC-Q101 Qualified | Yes - validated for automotive under-hood applications including engine control modules |
Pinout & Package
Package: TO220-3, through-hole, leaded plastic case with matte tin-plated copper leadframe; weight ≈1.85g; UL 94V-0 rated molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Drain (Tab) | Main current path from source to load | Electrically connected to metal tab - must be isolated from heatsink unless electrically referenced to drain |
| Source | Return path for load current; reference for gate drive | Low-inductance connection critical for minimizing switching noise and shoot-through risk |
| Gate | Control terminal for channel conduction | High-impedance input requiring low-ESR gate resistor (typically 3Ω) to damp ringing |
Key Features
| Feature | Design Value |
|---|---|
| 100% Unclamped Inductive Switching | Validated EAS = 52.8mJ - eliminates need for external clamping diodes in relay/solenoid drivers |
| Low Input Capacitance | Ciss = 3062pF - reduces gate drive power and improves switching efficiency above 100kHz |
| AEC-Q101 Qualification | Qualified for automotive Grade 1 (-40°C to +125°C ambient) - suitable for engine bay deployment |
| Green Packaging | Halogen- and antimony-free, RoHS-compliant - meets EU ELV and China RoHS environmental mandates |
| Low RDS(ON) Temperature Coefficient | RDS(ON) increases only ~1.8× from -55°C to +150°C - maintains stable on-state performance across wide thermal range |
Applications
| Engine Management Systems | Body Control Modules |
|---|---|
|
Use Scenario: High-side fuel injector driver in gasoline direct injection (GDI) systems. IC Role / Device Role / Timing Role: Power switch controlling 12V/5A pulsed solenoid actuation with 10μs turn-on and 2ms dwell time. Use Value: 4.7mΩ RDS(ON) limits resistive loss to <0.3W per pulse; 32.5A IAS handles inductive kickback without snubber. |
Use Scenario: Low-side window lift motor driver in automotive door modules. IC Role / Device Role / Timing Role: H-bridge half-bridge switch delivering bidirectional 30A peak current with PWM control. Use Value: 1.2°C/W RθJC enables direct heatsink mounting; AEC-Q101 qualification ensures reliability over 15-year vehicle lifecycle. |
| Industrial DC-DC Converters | Server VRM Synchronous Rectifiers |
|
Use Scenario: Primary-side switch in 48V-to-12V isolated forward converter for telecom power supplies. IC Role / Device Role / Timing Role: Hard-switched 200kHz MOSFET operating at 50% duty cycle with 100A peak current. Use Value: 49.1nC Qg enables efficient gate driving with IR2110; 52.8mJ EAS protects against transformer leakage inductance spikes. |
Use Scenario: Secondary-side synchronous rectifier in 48V-to-1V server VRM delivering >300A output. IC Role / Device Role / Timing Role: Low-VDS, high-ID switch replacing Schottky diode in multiphase buck stages. Use Value: 4.7mΩ RDS(ON) cuts conduction loss by >60% vs. 40V Schottky; TO220-3 mechanical robustness supports high-vibration server chassis. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar N-channel power MOSFET applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STP100N4F6 | RDS(ON) = 3.8mΩ @ VGS=10V; higher Qg = 120nC; TO220FP package (shorter leads) | Better conduction loss but slower switching due to higher gate charge - less suitable for >150kHz designs | Prefer for lower-frequency, thermally constrained applications where gate drive strength is ample |
| IRF1404Z | RDS(ON) = 4.7mΩ @ VGS=10V; no AEC-Q101 qualification; Coss = 1200pF (vs. 902pF) | Not qualified for automotive use; higher output capacitance increases switching loss in hard-switched topologies | Select only for cost-sensitive industrial non-automotive applications with relaxed reliability requirements |
Compared with STP100N4F6 and IRF1404Z, DMT4005SCT offers the optimal balance of low RDS(ON), moderate Qg, AEC-Q101 compliance, and industry-leading EAS - making it the preferred choice for automotive-grade high-current switching where both efficiency and ruggedness are mandatory.
Availability
DMT4005SCT is available at Aetrix Electronics and suitable for engine management systems, body control electronics, and industrial DC-DC converters requiring stable component supply and long-term automotive-grade availability.
Supply support for DMT4005SCT 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, headquartered in Plano, Texas, with design, manufacturing, and sales operations across Asia, Europe, and North America.
The DMT4005SCT belongs to Diodes' AEC-Q101-qualified power MOSFET product line, engineered specifically for high-reliability automotive power switching applications including engine control, lighting, and battery management systems.
FAQ
Is DMT4005SCT suitable for synchronous rectification in 48V-to-12V DC-DC converters?
Yes. With RDS(ON) of 4.7mΩ at VGS = 10V and 100A continuous current rating, DMT4005SCT delivers low conduction loss in high-current secondary-side switching. Its 49.1nC gate charge and 179pF Crss support efficient 200–500kHz operation when paired with dedicated gate drivers like the UCC27531.
What is the maximum safe operating temperature for DMT4005SCT in continuous conduction mode?
The junction temperature must not exceed +150°C. At TC = +70°C, the device supports 85A continuous drain current. With RθJC = 1.2°C/W and a heatsink maintaining TC ≤ 70°C, sustained 100A operation is achievable only if ambient and thermal interface conditions are tightly controlled per Figure 12 SOA curves.
Does DMT4005SCT require a gate resistor, and what value is recommended?
Yes - a gate resistor is required to control dV/dt and suppress oscillation. Diodes' application note AN-4001 recommends 3Ω for 10V gate drive with 100A load. This value balances switching speed (tR = 6.8ns, tF = 7.3ns) and gate ring suppression, especially when driving inductive loads.
Can DMT4005SCT replace IRF3205 in existing PCB layouts?
No - although both are TO220-3 N-channel MOSFETs, DMT4005SCT has different pinout: Drain is connected to the metal tab (Pin 1), Source is Pin 2, Gate is Pin 3; IRF3205 uses Source-tab configuration. Mechanical and electrical rework is required to avoid short-circuiting the drain to heatsink.
DMT4005SCT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- TO-220-3
- Packaging:
- Tube
- 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):
- 10V
- Rds On (Max) @ Id, Vgs:
- 4.7mOhm @ 50A, 10V
- Vgs(th) (Max) @ Id:
- 4V @ 250µA
- Gate Charge (Qg) (Max) @ Vgs:
- 49.1 nC @ 10 V
- Vgs (Max):
- ±20V
- Input Capacitance (Ciss) (Max) @ Vds:
- 3062 pF @ 20 V
- FET Feature:
- -
- Power Dissipation (Max):
- 2.3W (Ta), 104W (Tc)
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-220-3
DMT4005SCT FAQ
1.How can I place an order for DMT4005SCT through Aetrix?
Please submit a Request for Quotation (RFQ) for DMT4005SCT 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 DMT4005SCT reliable?
The price and inventory of DMT4005SCT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DMT4005SCT is usually 5 days.
3.What payment methods are accepted for DMT4005SCT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DMT4005SCT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DMT4005SCT?
DMT4005SCT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DMT4005SCT 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 DMT4005SCT?
For technical support, including DMT4005SCT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DMT4005SCT requirements.
6.How does Aetrix verify that DMT4005SCT is sourced from the original manufacturer or authorized distributors?
All DMT4005SCT 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 DMT4005SCT meets industry standards.
7.What is the process for return or replacement of DMT4005SCT?
All DMT4005SCT units undergo pre-shipment inspection (PSI). If there is an issue with DMT4005SCT, 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 DMT4005SCT part is unused and in its original packaging.
Return procedure for DMT4005SCT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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