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Home > Products > Discrete Semiconductor Products > Transistors > FETs, MOSFETs > FETs, MOSFETs

Diodes Incorporated DMN3066LQ-7

Name: DMN3066LQ-7
Brand: Diodes Incorporated
SKU: DMN3066LQ-7
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: DMN3066LQ-7

Manufacturer:: Diodes Incorporated

Category:: FETs, MOSFETs

Package:: TO-236-3, SC-59, SOT-23-3

Datasheet:: DMN3066LQ-7.pdf

Description:: MOSFET BVDSS: 25V~30V SOT23 T&R

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Product details

Overview

DMN3066LQ-7 from Diodes Incorporated is an AEC-Q101 qualified N-channel enhancement-mode MOSFET in SOT23 package, rated for 30V V_DSS, 67mΩ R_DS(ON) @ 4.5V V_GS, and 3.6A continuous drain current at +25°C. It features low gate threshold (0.5–1.5V), ESD-protected gate, and fast switching (t_D(ON) = 5.7ns), targeting automotive load-switch applications requiring high reliability and space-constrained PCB layouts.

For engineers reviewing the DMN3066LQ-7 datasheet, DMN3066LQ-7 pinout, DMN3066LQ-7 application, or DMN3066LQ-7 equivalent, key selection criteria include R_DS(ON) vs. V_GS curve at low drive voltages (2.5–4.5V), thermal resistance under FR-4 mounting (R_θJA = 154°C/W), and AEC-Q101 qualification status for automotive-grade deployment.

Technical Context

This MOSFET employs a trench-gate process optimized for low on-resistance while preserving fast turn-on/turn-off dynamics-evidenced by Q_g = 4.1nC and t_F = 11ns. Its gate threshold voltage range (0.5–1.5V) enables robust operation with 3.3V logic-level drivers without level-shifting.

The device integrates an intrinsic body diode with V_SD = 0.7–1.2V @ I_S = 0.6A and exhibits normalized R_DS(ON) drift of ≤1.6× over –55°C to +150°C, supporting stable performance across automotive temperature extremes.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DSS	30V - Maximum blocking voltage before avalanche; suitable for 12V/24V automotive rail switching.
R_DS(ON) @ 4.5V	67mΩ - On-resistance at standard logic-level gate drive; limits conduction loss to ≤0.24W @ 2.5A.
I_D (T_A=25°C)	3.6A - Continuous DC current capability with 0.81W power dissipation on FR-4 board.
V_GS(TH)	0.5–1.5V - Gate threshold span ensures reliable turn-on with 3.3V microcontrollers and noise margin against false triggering.
Q_g	4.1nC - Total gate charge determines driver strength requirement; compatible with low-power GPIOs.
t_F	11ns - Fast fall time reduces switching losses in PWM-controlled load switching above 100kHz.
R_θJA	154°C/W - Thermal resistance on minimal pad layout; junction rise ≈125°C at full 3.6A, requiring derating above +50°C ambient.

Pinout & Package

Package: SOT23 - Surface-mount plastic package (2.4mm × 1.3mm × 1.0mm), UL 94V-0 rated, matte tin-plated copper leadframe, moisture sensitivity level 1.

Pin/Terminal	Circuit Role	Design Meaning
1 (Source)	Current return path for load current	Connected to ground or low-side reference; internal connection to substrate; forms body diode cathode.
2 (Gate)	Control terminal for channel conduction	ESD-protected input; requires <1.5V to fully enhance; gate resistance R_g = 4.7Ω affects switching speed.
3 (Drain)	High-side current output node	Connected to load supply rail; withstands 30V transient spikes; carries full load current during ON state.

Key Features

Feature	Design Value
Low V_GS(TH) range	0.5–1.5V enables direct interface with 3.3V MCUs without gate driver ICs.
ESD-protected gate	HBM rating ≥2kV per JESD22-A114; eliminates need for external gate protection in most automotive modules.
AEC-Q101 qualification	Validated for automotive use including HTOL, TC, UHAST, and ESD stress tests per AEC specification.
Green packaging	Halogen- and antimony-free (<900ppm Br/Cl, <1000ppm Sb); RoHS 3 compliant with no intentionally added lead.

Applications

Automotive Body Control Module (BCM)

Infotainment Power Sequencing

Use Scenario: Controlling 12V accessory loads (e.g., LED interior lighting, window motor drivers) in BCMs with strict space and thermal constraints.

IC Role / Device Role / Timing Role: Low-side load switch enabling precise ON/OFF control via MCU GPIO; supports PWM dimming at up to 1kHz.

Use Value: 67mΩ R_DS(ON) limits power loss to <0.4W at 2.5A, reducing heatsink requirements and PCB area versus higher-R_DS(ON) alternatives.

Use Scenario: Sequencing power to display backlight, audio amplifier, and USB-C port in head unit designs requiring controlled startup timing.

IC Role / Device Role / Timing Role: High-reliability discrete switch isolating downstream rails; coordinated via timed GPIO signals from application processor.

Use Value: AEC-Q101 qualification ensures compliance with automotive functional safety requirements (ISO 26262 ASIL-B support via system-level design).

ADAS Camera Power Management

Electric Power Steering (EPS) Sensor Interface

Use Scenario: Supplying regulated 5V/3.3V to CMOS image sensors and ISP processors in rear-view and surround-view camera modules.

IC Role / Device Role / Timing Role: Low-noise, fast-turnoff switch preventing backfeed during fault conditions; integrated body diode handles inductive kickback.

Use Value: t_F = 11ns and Q_gd = 1.2nC minimize shoot-through risk in multi-rail sequencing, improving system robustness.

Use Scenario: Isolating Hall-effect position sensor supplies from main EPS controller to prevent noise coupling and enable safe diagnostics.

IC Role / Device Role / Timing Role: Fail-safe isolation switch activated only during active sensing; remains OFF during sleep mode to reduce quiescent current.

Use Value: V_GS(TH) stability over –40°C to +125°C (±0.2V drift) ensures consistent turn-on behavior across vehicle operating envelope.

Equivalent & Alternatives

The following parts are listed as comparable options for similar N-channel load-switch applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
DMN3025LQ-7	R_DS(ON) = 25mΩ @ 4.5V (lower), but ID = 4.8A and PD = 1.33W - larger thermal footprint required.	Better for higher-current loads (>3.6A); less suitable for ultra-low-power standby due to higher gate charge (Q_g = 6.2nC).	Select when lower conduction loss outweighs PCB area and gate drive capability constraints.
AO3400A	Non-AEC-Q101; R_DS(ON) = 42mΩ @ 4.5V; V_GS(TH) = 0.7–1.4V; lacks ESD protection and automotive qualification.	Acceptable for industrial/commercial load switching only; not permitted in production automotive ECUs.	Choose only for cost-sensitive non-automotive designs where qualification and ESD immunity are not required.

Compared with DMN3066LQ-7, DMN3025LQ-7 delivers lower R_DS(ON) at the expense of higher Q_g and thermal mass, while AO3400A offers cost advantage but forfeits automotive compliance and gate robustness-making DMN3066LQ-7 the optimal balance for AEC-Q101-compliant, space-constrained load switching.

Availability

DMN3066LQ-7 is available at Aetrix Electronics and suitable for automotive body control modules, infotainment power sequencing, and ADAS camera power management requiring stable component supply, AEC-Q101 traceability, and SOT23 footprint compatibility.

Supply support for DMN3066LQ-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, specializing in high-reliability components for automotive, industrial, and computing markets.

The DMN3066LQ belongs to Diodes' AEC-Q101-qualified power MOSFET product line, engineered specifically for automotive load-switching applications demanding low R_DS(ON), robust gate drive compatibility, and extended temperature operation.

FAQ

Is DMN3066LQ-7 qualified for automotive applications?

Yes. DMN3066LQ-7 is AEC-Q101 qualified, PPAP capable, and manufactured in IATF 16949 certified facilities. It undergoes high-temperature operating life (HTOL), temperature cycling (TC), and unbiased highly accelerated stress test (UHAST) per AEC standards, making it suitable for production automotive ECUs.

What is the maximum continuous drain current at +85°C ambient?

At T_A = +85°C, the continuous drain current is derated to 2.9A (per datasheet Table "Continuous Drain Current"). This reflects thermal limitation under standard FR-4 mounting with 2oz copper; actual current depends on PCB layout and airflow.

Does DMN3066LQ-7 require external gate protection?

No. The device integrates ESD protection on the gate terminal (HBM ≥2kV), eliminating the need for external TVS diodes or resistors in typical automotive environments. However, layout best practices (short traces, ground guard ring) are still recommended.

Can DMN3066LQ-7 be driven directly by a 3.3V microcontroller GPIO?

Yes. With V_GS(TH) spanning 0.5–1.5V and R_DS(ON) = 67mΩ at V_GS = 4.5V (and 98mΩ at V_GS = 2.5V), it achieves full enhancement using 3.3V logic. For lowest R_DS(ON), ensure gate drive can source ≥1mA to overcome C_iss = 353pF within required switching time.

DMN3066LQ-7 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:: 3.6A (Ta)

Drive Voltage (Max Rds On, Min Rds On):: 2.5V, 4.5V

Rds On (Max) @ Id, Vgs:: 67mOhm @ 2.5A, 4.5V

Vgs(th) (Max) @ Id:: 1.5V @ 250µA

Gate Charge (Qg) (Max) @ Vgs:: 4.1 nC @ 4.5 V

Vgs (Max):: ±12V

Input Capacitance (Ciss) (Max) @ Vds:: 353 pF @ 10 V

FET Feature:: -

Power Dissipation (Max):: 810mW (Ta)

Operating Temperature:: -55°C ~ 150°C (TJ)

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-23-3

DMN3066LQ-7 FAQ

1.How can I place an order for DMN3066LQ-7 through Aetrix?

Please submit a Request for Quotation (RFQ) for DMN3066LQ-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 DMN3066LQ-7 reliable?

The price and inventory of DMN3066LQ-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DMN3066LQ-7 is usually 5 days.

3.What payment methods are accepted for DMN3066LQ-7?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DMN3066LQ-7 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for DMN3066LQ-7?

DMN3066LQ-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your DMN3066LQ-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 DMN3066LQ-7?

For technical support, including DMN3066LQ-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DMN3066LQ-7 requirements.

6.How does Aetrix verify that DMN3066LQ-7 is sourced from the original manufacturer or authorized distributors?

All DMN3066LQ-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 DMN3066LQ-7 meets industry standards.

7.What is the process for return or replacement of DMN3066LQ-7?

All DMN3066LQ-7 units undergo pre-shipment inspection (PSI). If there is an issue with DMN3066LQ-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 DMN3066LQ-7 part is unused and in its original packaging.

Return procedure for DMN3066LQ-7:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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