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Diodes Incorporated DMG3402LQ-13
- Part No.:
- DMG3402LQ-13
- Manufacturer:
- Diodes Incorporated
- Category:
- FETs, MOSFETs
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
DMG3402LQ-13.pdf
- Description:
- MOSFET N-CH 30V 4A SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:9,858
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Product details
Overview
DMG3402LQ-13 from Diodes Incorporated is an N-channel enhancement-mode MOSFET in SOT23 package, rated for 30 V VDSS, 4 A ID at TA = +25°C, with RDS(ON) = 52 mΩ @ VGS = 10 V. It delivers low gate threshold (0.6–1.4 V), fast switching (tF = 2.0 ns), and AEC-Q101 qualification for automotive-grade reliability in power management functions.
For engineers reviewing the DMG3402LQ-13 datasheet, DMG3402LQ-13 pinout, DMG3402LQ-13 application, or DMG3402LQ-13 equivalent, key selection criteria include its 4.5 V RDS(ON) of 65 mΩ, 1.4 W power dissipation on FR-4 PCB, and SOT23 footprint compatibility with space-constrained DC-DC converter and battery-operated system designs.
Technical Context
This discrete MOSFET operates as a low-side switch in synchronous buck converters and load-switching circuits, leveraging its 0.6–1.4 V gate threshold to enable direct drive from 3.3 V or 5 V logic without level-shifting. Its 464 pF Ciss and 11.7 nC Qg support efficient high-frequency switching up to several hundred kHz.
The device integrates a body diode with VSD = 1.16 V @ IS = 2.0 A and exhibits normalized RDS(ON) drift of ≤1.8× from –55°C to +150°C, enabling stable conduction across automotive temperature ranges. Thermal resistance RθJA = 90°C/W confirms suitability for thermally constrained PCB layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDSS | 30 V - Maximum drain-source blocking voltage for 12 V/24 V automotive and industrial bus applications |
| RDS(ON) | 52 mΩ @ VGS = 10 V - Enables <120 mW conduction loss at 4 A, critical for thermal budget in compact converters |
| ID | 4 A @ TA = +25°C - Continuous current rating sufficient for 5–10 W point-of-load stages |
| VGS(TH) | 0.6–1.4 V - Ensures full enhancement with 1.8 V/3.3 V microcontroller GPIOs, eliminating need for gate drivers |
| Qg | 11.7 nC @ 10 V - Determines gate drive energy requirement; supports >500 kHz PWM with low-power drivers |
| tF | 2.0 ns - Limits switching transition losses and EMI generation in high-speed power stages |
| PD | 1.4 W on FR-4 - Defines maximum steady-state power handling without heatsinking in standard PCB layout |
Pinout & Package
Package: SOT23 - Surface-mount plastic package with 0.915 mm nominal lead pitch, 2.40 mm × 1.30 mm footprint, and 0.40 mm height; UL 94V-0 rated, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| D (Drain) | High-current output node | Connected to switched load or inductor node; carries full load current and must be routed with low-inductance copper |
| G (Gate) | Control input | Receives PWM signal; requires RC snubber if driven by high-impedance source due to 2.2 Ω Rg |
| S (Source) | Reference and return path | Bonded to PCB ground plane; serves as common reference for gate drive and current sensing |
Key Features
| Feature | Design Value |
|---|---|
| Low RDS(ON) at 4.5 V | 65 mΩ enables efficient operation directly from 5 V logic rails in USB-powered systems |
| AEC-Q101 qualification | Validated for automotive applications including infotainment power rails and body control modules |
| Low input capacitance | Ciss = 464 pF reduces gate drive power and improves noise immunity in noisy environments |
| Green packaging | Halogen- and antimony-free compound (<900 ppm Br+Cl, <1000 ppm Sb) meets automotive ELV and RoHS 3 requirements |
| Fast turn-off | tD(OFF) = 10.3 ns minimizes shoot-through risk in half-bridge configurations |
Applications
| DC-DC Buck Converter | Load Switch for Portable Devices |
|---|---|
Use Scenario: High-efficiency 5 V → 3.3 V step-down converter in IoT sensor nodes. IC Role / Device Role / Timing Role: Low-side synchronous rectifier in continuous conduction mode (CCM) operation. Use Value: 65 mΩ RDS(ON) at 4.5 V ensures <100 mW conduction loss at 1.5 A, extending battery life by >8% versus higher-RDS(ON) alternatives. |
Use Scenario: Controlled power-up sequencing for Bluetooth SoC in wearables. IC Role / Device Role / Timing Role: Single-pole, single-throw (SPST) load switch activated by MCU GPIO. Use Value: 0.6–1.4 V VGS(TH) allows direct 1.8 V GPIO control, eliminating external level shifter and reducing BOM count. |
| Battery Protection Circuit | Automotive Solid-State Relay |
Use Scenario: Overcurrent cutoff in 2-cell Li-ion battery packs (8.4 V max). IC Role / Device Role / Timing Role: Primary discharge path switch with integrated current-sense resistor feedback. Use Value: 30 V VDSS provides 3.5× margin over pack voltage, ensuring robustness against transient spikes during hot-plug events. |
Use Scenario: Replacement for electromechanical relay in 12 V lighting control module. IC Role / Device Role / Timing Role: AEC-Q101-qualified power switch driving LED headlamp arrays. Use Value: Qualified operation from –40°C to +125°C ambient and 150°C junction enables reliable duty-cycling in under-hood environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar N-channel MOSFET applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| DMN3022LSD-13 | 30 V, 4.2 A, RDS(ON) = 45 mΩ @ 10 V but SOT23-6 package with dual-gate configuration | Requires PCB redesign for 6-pin layout; supports dual-switch topologies (e.g., half-bridge) | Select when needing complementary high-side/low-side pairing or higher current density |
| AO3400 | 30 V, 5.7 A, RDS(ON) = 43 mΩ @ 10 V; no AEC-Q101 qualification; 1.5 W PD | Not qualified for automotive use; suitable only for commercial-grade consumer electronics | Choose for cost-sensitive non-automotive applications where AEC-Q101 compliance is unnecessary |
Compared with DMG3402LQ-13, DMN3022LSD-13 offers lower RDS(ON) but demands larger board area and dual-gate control logic, while AO3400 trades automotive reliability for marginal conduction loss reduction-making DMG3402LQ-13 optimal for space-constrained, AEC-Q101–mandated designs.
Availability
DMG3402LQ-13 is available at Aetrix Electronics and suitable for DC-DC converters, battery-operated systems, and solid-state relays requiring stable component supply with automotive-grade qualification and SOT23 footprint compatibility.
Supply support for DMG3402LQ-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, headquartered in Plano, Texas, with design centers across Asia and manufacturing in China, Taiwan, and Malaysia.
The DMG3402LQ belongs to Diodes' Automotive-Qualified Power MOSFET product line, engineered specifically for high-reliability, low-voltage power switching in automotive body electronics, infotainment, and ADAS subsystems.
FAQ
What is the maximum continuous drain current for DMG3402LQ-13 at 85°C ambient?
At TA = +85°C, the maximum continuous drain current is derated to 2.5 A based on thermal limits and RDS(ON) increase. This value is derived from the Safe Operating Area (SOA) curve in Figure 11 of DS41443 Rev. 2–2, assuming 1 cm² copper pour on FR-4 PCB with no forced airflow.
Does DMG3402LQ-13 support logic-level gate drive from 3.3 V microcontrollers?
Yes. With VGS(TH) spanning 0.6–1.4 V and RDS(ON) = 65 mΩ at VGS = 4.5 V, the device fully enhances using standard 3.3 V GPIO outputs. Measured transfer characteristics (Figure 2) confirm ≥3 A ID at VGS = 3.3 V and VDS = 5 V.
Is the body diode in DMG3402LQ-13 suitable for reverse-current protection?
No. The intrinsic body diode has VSD = 1.16 V @ IS = 2.0 A and is not optimized for reverse-biased blocking. It is intended only for freewheeling in inductive loads-not for active reverse-current blocking, which requires external Schottky or dedicated ideal diode controllers.
What is the moisture sensitivity level (MSL) and reflow profile compliance for DMG3402LQ-13?
DMG3402LQ-13 is rated MSL Level 1 per J-STD-020, meaning it may be stored indefinitely at ≤30°C/85% RH and subjected to standard Pb-free reflow profiles (peak 260°C, 20–40 sec above 217°C) without baking. This is confirmed in the Mechanical Data section of DS41443 Rev. 2–2.
DMG3402LQ-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- FET Type:
- N-Channel
- Technology:
- MOSFET (Metal Oxide)
- Drain to Source Voltage (Vdss):
- 30 V
- Current - Continuous Drain (Id) @ 25°C:
- 4A (Ta)
- Drive Voltage (Max Rds On, Min Rds On):
- 2.5V, 10V
- Rds On (Max) @ Id, Vgs:
- 52mOhm @ 4A, 10V
- Vgs(th) (Max) @ Id:
- 1.4V @ 250µA
- Gate Charge (Qg) (Max) @ Vgs:
- 11.7 nC @ 10 V
- Vgs (Max):
- ±12V
- Input Capacitance (Ciss) (Max) @ Vds:
- 464 pF @ 15 V
- FET Feature:
- -
- Power Dissipation (Max):
- 1.4W
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
DMG3402LQ-13 FAQ
1.How can I place an order for DMG3402LQ-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for DMG3402LQ-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 DMG3402LQ-13 reliable?
The price and inventory of DMG3402LQ-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DMG3402LQ-13 is usually 5 days.
3.What payment methods are accepted for DMG3402LQ-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DMG3402LQ-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DMG3402LQ-13?
DMG3402LQ-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DMG3402LQ-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 DMG3402LQ-13?
For technical support, including DMG3402LQ-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DMG3402LQ-13 requirements.
6.How does Aetrix verify that DMG3402LQ-13 is sourced from the original manufacturer or authorized distributors?
All DMG3402LQ-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 DMG3402LQ-13 meets industry standards.
7.What is the process for return or replacement of DMG3402LQ-13?
All DMG3402LQ-13 units undergo pre-shipment inspection (PSI). If there is an issue with DMG3402LQ-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 DMG3402LQ-13 part is unused and in its original packaging.
Return procedure for DMG3402LQ-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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