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Diodes Incorporated DMN2004WKQ-7
- Part No.:
- DMN2004WKQ-7
- Manufacturer:
- Diodes Incorporated
- Category:
- FETs, MOSFETs
- Package:
- SC-70, SOT-323
- Datasheet:
-
DMN2004WKQ-7.pdf
- Description:
- MOSFET N-CH 20V 540MA SOT323
- Quantity:
- Payment:
- Shipping:
Inventory:2,659
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Product details
Overview
DMN2004WKQ-7 from Diodes Incorporated is an AEC-Q101-qualified N-channel enhancement-mode MOSFET in SOT-323 package, rated for 20 V VDSS, 540 mA ID at TA = +25°C, and 550 mΩ RDS(ON) @ VGS = 4.5 V. It serves as a low-voltage power switch in automotive body control modules and DC-DC converter synchronous rectification stages.
For engineers reviewing the DMN2004WKQ-7 datasheet, DMN2004WKQ-7 pinout, DMN2004WKQ-7 application, or DMN2004WKQ-7 equivalent, key selection criteria include its AEC-Q101 qualification, low gate threshold (0.5–1.0 V), ESD-protected gate, 625 °C/W RθJA, and suitability for space-constrained automotive PCBs requiring <200 mW power dissipation.
Technical Context
This MOSFET operates in enhancement mode with a nominal gate threshold voltage of 0.5–1.0 V, enabling direct drive from 1.8 V and 2.5 V logic controllers. Its low input capacitance (Ciss = 150 pF) and fast switching speed support high-frequency PWM operation up to several hundred kHz in DC-DC converters.
The integrated gate protection diode and ESD-hardened structure provide robustness against transient gate stress in automotive environments. Thermal performance is defined for FR-4 PCB mounting, with junction-to-ambient thermal resistance of 625 °C/W limiting continuous conduction to ≤390 mA at +85°C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDSS | 20 V - Maximum drain-source blocking voltage for 12 V automotive rail applications |
| RDS(ON) | 550 mΩ @ VGS = 4.5 V - Enables <300 mW conduction loss at 540 mA load current |
| ID (TA = +25°C) | 540 mA - Continuous DC current rating on standard FR-4 board without heatsink |
| VGS(th) | 0.5–1.0 V - Ensures turn-on compatibility with low-voltage microcontrollers and ASICs |
| Ciss | 150 pF - Limits gate drive power and enables efficient 500 kHz+ switching in buck regulators |
| RθJA | 625 °C/W - Defines thermal derating curve; requires layout optimization for >200 mW sustained dissipation |
| AEC-Q101 Qualified | Yes - Validated for automotive underhood and cabin applications per stress test requirements |
Pinout & Package
Package: SOT-323 - ultra-small surface-mount plastic case (2.15 × 2.10 × 0.95 mm), moisture sensitivity level 1, lead-free and RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Gate (G) | Control electrode | ESD-protected input accepting 0.5–1.0 V threshold; requires <1 μA leakage drive |
| Source (S) | Reference node for channel conduction | Connected to ground or low-side return path; internal diode cathode |
| Drain (D) | Power output terminal | Carries switched load current; connected to 20 V rail or inductive flyback node |
Key Features
| Feature | Design Value |
|---|---|
| Low RDS(ON) | 550 mΩ @ 4.5 V - Reduces I²R losses in battery-powered automotive sensors and actuators |
| Low VGS(th) | 0.5–1.0 V - Eliminates need for gate boosters when driven by 1.8 V/2.5 V MCUs |
| ESD protection | HBM ≥2 kV - Withstands assembly handling and in-system transients without external clamping |
| Fast switching | Ciss/Coss ratio ~6:1 - Supports clean turn-on/turn-off edges in 300–500 kHz DC-DC topologies |
| AEC-Q101 qualification | PPAP-capable - Meets automotive production traceability, failure analysis, and lot-control requirements |
Applications
| Engine Management Systems | DC-DC Converters |
|---|---|
Use Scenario: Low-side switching of fuel injector drivers and idle air control valves in 12 V engine control units. IC Role / Device Role / Timing Role: Power switch controlling pulsed coil current with 1–10 ms on-time and <100 ns rise/fall. Use Value: 550 mΩ RDS(ON) limits voltage drop to <300 mV at 540 mA, preserving actuator torque margin. | Use Scenario: Synchronous rectifier in 5 V output buck converter for infotainment head unit power supply. IC Role / Device Role / Timing Role: Low-side switch replacing Schottky diode to improve efficiency at light-to-moderate loads. Use Value: 150 pF Ciss and fast switching reduce gate drive loss and dead-time conduction loss. |
| Body Control Electronics | LED Lighting Drivers |
Use Scenario: Load switching for interior dome lights, door lock actuators, and mirror heaters in vehicle body control modules. IC Role / Device Role / Timing Role: General-purpose low-side driver interfacing with CAN/LIN-based microcontrollers. Use Value: AEC-Q101 qualification ensures reliability over 15-year vehicle lifetime under thermal cycling and vibration. | Use Scenario: Constant-current sink for automotive LED tail lamps and position lights. IC Role / Device Role / Timing Role: Linear or PWM-controlled current regulator with thermal foldback. Use Value: 0.5–1.0 V VGS(th) allows direct PWM dimming from 1.8 V logic without level shifters. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar N-channel MOSFET switching applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| DMN2004LWQ-7 | RDS(ON) = 400 mΩ @ VGS = 4.5 V; same SOT-323 package and AEC-Q101 rating | Lower conduction loss enables higher current capability (650 mA) in same thermal envelope | Select when >540 mA continuous current or <250 mW conduction loss is required |
| DMN2020UWQ-7 | VDSS = 20 V; RDS(ON) = 200 mΩ @ VGS = 4.5 V; larger SOT-523 footprint | Higher current (1.2 A) and lower RDS(ON), but incompatible pinout and layout | Choose only if board redesign permits SOT-523 and thermal budget supports >1 A loads |
Compared with DMN2004LWQ-7 and DMN2020UWQ-7, the DMN2004WKQ-7 offers optimal balance of AEC-Q101 compliance, ultra-compact SOT-323 size, and sufficient RDS(ON) for sub-500 mA automotive loads-making it ideal where board area and qualification are prioritized over marginal conduction loss reduction.
Availability
DMN2004WKQ-7 is available at Aetrix Electronics and suitable for engine management systems, DC-DC converters, and body control electronics requiring stable component supply across automotive production lifecycles.
Supply support for DMN2004WKQ-7 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 DMN2004WKQ-7 belongs to Diodes' Automotive-Qualified Small-Signal MOSFET product line, engineered specifically for space-constrained, thermally demanding automotive subsystems operating from 12 V battery rails.
FAQ
Is DMN2004WKQ-7 suitable for hot-swap applications?
No. The device lacks built-in current-limiting or slew-rate control circuitry. Its 1.5 A pulsed drain rating and ±8 V gate rating do not guarantee safe insertion into live 12 V buses. External current-limiting resistors or dedicated hot-swap controllers are required for such use cases.
What is the maximum PCB copper area recommended for thermal relief?
For 200 mW continuous dissipation at +25°C ambient, Diodes recommends a minimum 25 mm² of 1 oz copper connected to the source pad via ≥2 thermal vias (0.3 mm diameter). Larger areas improve derating but are constrained by SOT-323 pad layout limits per the official outline drawing.
Does DMN2004WKQ-7 include intrinsic body diode recovery protection?
No. The internal body diode has no soft-recovery specification. Reverse recovery time (trr) is not characterized in the datasheet. For inductive switching with reverse recovery concerns, external snubbers or synchronous control timing must manage commutation stress.
Can DMN2004WKQ-7 be used in linear regulation mode?
Yes, but with strict thermal limits. At 200 mW PD and 625 °C/W RθJA, junction temperature rises 125°C above ambient. Linear operation is viable only for brief pulses or with active cooling; continuous use requires derating to ≤100 mW at +70°C ambient.
DMN2004WKQ-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SC-70, SOT-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- FET Type:
- N-Channel
- Technology:
- MOSFET (Metal Oxide)
- Drain to Source Voltage (Vdss):
- 20 V
- Current - Continuous Drain (Id) @ 25°C:
- 540mA (Ta)
- Drive Voltage (Max Rds On, Min Rds On):
- 1.8V, 4.5V
- Rds On (Max) @ Id, Vgs:
- 550mOhm @ 540mA, 4.5V
- Vgs(th) (Max) @ Id:
- 1V @ 250µA
- Gate Charge (Qg) (Max) @ Vgs:
- -
- Vgs (Max):
- ±8V
- Input Capacitance (Ciss) (Max) @ Vds:
- 150 pF @ 16 V
- FET Feature:
- -
- Power Dissipation (Max):
- 200mW (Ta)
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-323
DMN2004WKQ-7 FAQ
1.How can I place an order for DMN2004WKQ-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for DMN2004WKQ-7 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 DMN2004WKQ-7 reliable?
The price and inventory of DMN2004WKQ-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DMN2004WKQ-7 is usually 5 days.
3.What payment methods are accepted for DMN2004WKQ-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DMN2004WKQ-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DMN2004WKQ-7?
DMN2004WKQ-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DMN2004WKQ-7 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 DMN2004WKQ-7?
For technical support, including DMN2004WKQ-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DMN2004WKQ-7 requirements.
6.How does Aetrix verify that DMN2004WKQ-7 is sourced from the original manufacturer or authorized distributors?
All DMN2004WKQ-7 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 DMN2004WKQ-7 meets industry standards.
7.What is the process for return or replacement of DMN2004WKQ-7?
All DMN2004WKQ-7 units undergo pre-shipment inspection (PSI). If there is an issue with DMN2004WKQ-7, 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 DMN2004WKQ-7 part is unused and in its original packaging.
Return procedure for DMN2004WKQ-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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