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Diodes Incorporated DMN4034SSSQ-13
- Part No.:
- DMN4034SSSQ-13
- Manufacturer:
- Diodes Incorporated
- Category:
- FETs, MOSFETs
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
DMN4034SSSQ-13.pdf
- Description:
- MOSFET BVDSS: 31V~40V SO-8 T&R 2
- Quantity:
- Payment:
- Shipping:
Inventory:8,606
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Product details
Overview
DMN4034SSSQ from Diodes Incorporated is a 40V N-channel enhancement-mode MOSFET qualified to AEC-Q101 for automotive use, with RDS(ON) = 34 mΩ @ VGS = 10 V, ID = 6.5 A, and SO-8 package. It serves as a high-efficiency power switch in DC-DC converters, backlighting drivers, and power management circuits where low conduction loss and fast switching are critical.
For engineers reviewing the DMN4034SSSQ datasheet, DMN4034SSSQ pinout, DMN4034SSSQ application, or DMN4034SSSQ equivalent, key selection criteria include gate threshold voltage (1.0–3.0 V), UIS-rated ruggedness (19 mJ), thermal resistance (RθJA = 58.9 °C/W on 2 oz copper), and AEC-Q101 qualification for automotive-grade reliability.
Technical Context
This MOSFET employs a trench-gate silicon process optimized for low RDS(ON) and fast switching in 40 V-class automotive power stages. Its gate threshold voltage range (1.0–3.0 V) enables reliable turn-on with standard 3.3 V or 5 V logic-level drive, while its low Ciss (920 pF) and Qg (7.7–18 nC) support high-frequency operation up to several hundred kHz.
The device integrates a robust body diode with VSD = 0.87–1.1 V at 6 A and tRR = 11.9 ns, enabling efficient synchronous rectification and flyback recovery. Its 100% production-tested UIS capability (18 A/19 mJ) ensures survivability under inductive load transients common in automotive solenoid and motor control.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDSS | 40 V - Maximum drain-source blocking voltage; suitable for 24 V automotive systems with transient margin. |
| RDS(ON) | 34 mΩ @ VGS = 10 V, ID = 6 A - Enables <1 W conduction loss at 6 A, reducing thermal stress in compact layouts. |
| ID (max) | 6.5 A @ TA = 25 °C - Continuous current rating supports mid-power DC-DC stages without forced cooling. |
| Qg | 15.5–18 nC @ VGS = 10 V - Low gate charge minimizes driver power and switching losses in high-frequency PWM designs. |
| EAS | 19 mJ - Avalanche energy rating validated per JEDEC JESD24-1; ensures robustness against inductive kickback in unclamped loads. |
| RθJA | 58.9 °C/W - Measured on FR-4 with 2 oz copper thermal pad; enables ~2.1 W power dissipation at 70 °C ambient. |
| VGS(TH) | 1.0–3.0 V - Logic-compatible gate threshold allows direct drive from MCU GPIOs or low-voltage controllers. |
Pinout & Package
Package: SO-8 (Surface-Mount, 8-pin small-outline integrated circuit), molded green plastic, UL 94V-0 rated, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4 | Source (S) | Common source connection; pins 1–4 internally bonded together for low-inductance, high-current return path. |
| 5, 6, 7, 8 | Drain (D) | Power output node; pins 5–8 tied to exposed drain tab for enhanced thermal conduction to PCB copper. |
| 3 (Gate) | Gate (G) | Control input; pin 3 only - isolated gate terminal with low Rg (2.1 Ω) for stable high-speed switching. |
Key Features
| Feature | Design Value |
|---|---|
| Low RDS(ON) at 4.5 V | 59 mΩ - Enables efficient operation with 5 V gate drive in legacy automotive control modules. |
| Fast switching speed | tF = 7 ns, tR = 3 ns - Reduces transition losses in high-frequency (>500 kHz) buck or boost converters. |
| 100% UIS tested | 18 A / 19 mJ - Guarantees ruggedness against inductive energy spikes without external snubbers in motor drivers. |
| AEC-Q101 qualified | PPAP-capable, IATF 16949 manufactured - Meets automotive change control, traceability, and zero-defect requirements. |
| Green, RoHS-compliant | Halogen- and antimony-free (<900 ppm Br/Cl, <1000 ppm Sb) - Complies with EU ELV and OEM environmental mandates. |
Applications
| Automotive LED Backlighting | 12 V–24 V DC-DC Converters |
|---|---|
|
Use Scenario: Driving high-brightness LED strings in instrument clusters and center displays with PWM dimming. IC Role / Device Role / Timing Role: High-side or low-side power switch controlling LED current path with precise duty-cycle modulation. Use Value: Low RDS(ON) and fast tF/tR minimize PWM-induced thermal rise and enable >10 kHz dimming without audible noise. |
Use Scenario: Synchronous rectifier or main switch in buck converters powering ADAS sensors and infotainment ECUs. IC Role / Device Role / Timing Role: Primary power FET in 400 kHz–1 MHz switching stage, handling up to 6 A continuous output current. Use Value: 34 mΩ RDS(ON) at 10 V reduces conduction loss by >35% vs. comparable 40 V MOSFETs, improving efficiency above 92% at full load. |
| Automotive Power Management Units | Body Control Module Load Switching |
|
Use Scenario: Distributed power rail switching for sub-systems like HVAC actuators, window lift motors, and mirror controls. IC Role / Device Role / Timing Role: Protected load switch providing overcurrent, overtemperature, and short-circuit response via external controller. Use Value: AEC-Q101 qualification and 100% UIS testing ensure reliable hot-swap and fault recovery in harsh vehicle environments. |
Use Scenario: Solid-state replacement for electromechanical relays in door lock, seat position, and lighting circuits. IC Role / Device Role / Timing Role: Low-threshold (1.0–3.0 V) N-channel switch driven directly by 3.3 V microcontroller outputs. Use Value: Gate compatibility with 3.3 V logic eliminates level-shifter components, reducing BOM count and board space in space-constrained BCMs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar N-channel 40 V automotive MOSFET applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STL10DN40L-1 | RDS(ON) = 40 mΩ @ 10 V, VGS(TH) = 1.5–2.5 V, SO-8 package, AEC-Q101 qualified. | Slightly higher RDS(ON) increases conduction loss by ~18% at 6 A; identical thermal footprint. | Preferred when tighter VGS(TH) distribution is required for deterministic turn-on timing across temperature. |
| ON Semiconductor NTMFS4C06NT1G | RDS(ON) = 32 mΩ @ 10 V, but SO-8FL (flat lead) package; AEC-Q101 qualified, lower RθJA (45 °C/W). | Requires different PCB pad layout; superior thermal performance enables higher current density in thermally constrained zones. | Select when board-level thermal resistance must be minimized below 50 °C/W, and flat-lead assembly is supported. |
Compared with STL10DN40L-1 and NTMFS4C06NT1G, DMN4034SSSQ offers the best balance of low gate charge (7.7 nC @ 4.5 V), proven UIS ruggedness, and standard SO-8 manufacturability-making it optimal for cost-sensitive, high-volume automotive power stages requiring no layout redesign.
Availability
DMN4034SSSQ is available at Aetrix Electronics and suitable for automotive LED backlighting, 12 V–24 V DC-DC converters, and body control module load switching requiring stable component supply, AEC-Q101 compliance, and long-term lifecycle assurance.
Supply support for DMN4034SSSQ 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.
The DMN4034SSSQ belongs to Diodes' Automotive Power MOSFET product line, engineered specifically for AEC-Q101-compliant switching in 12 V/24 V vehicle subsystems where efficiency, ruggedness, and PPAP readiness are mandatory.
FAQ
What is the maximum junction temperature for continuous operation?
The DMN4034SSSQ has an operating junction temperature range of –55 °C to +150 °C. For continuous operation, the absolute maximum TJ is 150 °C, and thermal design must ensure this limit is not exceeded under worst-case ambient and power dissipation conditions, using the specified RθJA = 58.9 °C/W on 2 oz copper.
Is the SO-8 package lead-free and RoHS compliant?
Yes. The DMN4034SSSQ is fully RoHS 3 compliant (2015/863/EU), with no purposely added lead, and is halogen- and antimony-free ("Green" per Diodes' definition: <900 ppm Br, <900 ppm Cl, <1000 ppm Sb). Terminal finish is matte tin annealed over copper leadframe, solderable per MIL-STD-202, Method 208.
Does this MOSFET require a gate resistor for stability?
A gate resistor (typically 2–10 Ω) is recommended to dampen ringing caused by parasitic inductance in the gate loop. The device's Rg = 2.1 Ω (measured) and low Ciss/Crss ratio support stable switching, but external resistance improves EMI performance and prevents overshoot in high-dV/dt environments typical of automotive power rails.
Can DMN4034SSSQ replace older 40 V MOSFETs in existing SO-8 designs?
Yes-DMN4034SSSQ is a direct drop-in replacement for other SO-8 40 V N-channel MOSFETs with identical pinout (source-drain-gate mapping) and compatible gate drive. Its lower RDS(ON), faster switching, and AEC-Q101 qualification make it suitable for upgrading legacy automotive power stages without PCB revision.
DMN4034SSSQ-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- 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:
- 6.5A (Ta)
- Drive Voltage (Max Rds On, Min Rds On):
- 4.5V, 10V
- Rds On (Max) @ Id, Vgs:
- 34mOhm @ 6A, 10V
- Vgs(th) (Max) @ Id:
- 3V @ 250µA
- Gate Charge (Qg) (Max) @ Vgs:
- 18 nC @ 10 V
- Vgs (Max):
- ±20V
- Input Capacitance (Ciss) (Max) @ Vds:
- 920 pF @ 20 V
- FET Feature:
- -
- Power Dissipation (Max):
- 1.4W (Ta)
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SO
DMN4034SSSQ-13 FAQ
1.How can I place an order for DMN4034SSSQ-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for DMN4034SSSQ-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 DMN4034SSSQ-13 reliable?
The price and inventory of DMN4034SSSQ-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DMN4034SSSQ-13 is usually 5 days.
3.What payment methods are accepted for DMN4034SSSQ-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DMN4034SSSQ-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DMN4034SSSQ-13?
DMN4034SSSQ-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DMN4034SSSQ-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 DMN4034SSSQ-13?
For technical support, including DMN4034SSSQ-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DMN4034SSSQ-13 requirements.
6.How does Aetrix verify that DMN4034SSSQ-13 is sourced from the original manufacturer or authorized distributors?
All DMN4034SSSQ-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 DMN4034SSSQ-13 meets industry standards.
7.What is the process for return or replacement of DMN4034SSSQ-13?
All DMN4034SSSQ-13 units undergo pre-shipment inspection (PSI). If there is an issue with DMN4034SSSQ-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 DMN4034SSSQ-13 part is unused and in its original packaging.
Return procedure for DMN4034SSSQ-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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