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

Diodes Incorporated DMN3112SQ-7

Name: DMN3112SQ-7
Brand: Diodes Incorporated
SKU: DMN3112SQ-7
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: DMN3112SQ-7

Manufacturer:: Diodes Incorporated

Category:: FETs, MOSFETs

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

Datasheet:: DMN3112SQ-7.pdf

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

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Inventory:8,562

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Product details

Overview

DMN3112SQ-7 from Diodes Incorporated is an AEC-Q101 qualified N-channel enhancement-mode MOSFET in SOT23 package, rated for 30V V_DSS, 57 mΩ R_DS(ON) @ 10V_GS, and 5.8A continuous drain current at 25°C. It serves as a high-efficiency power switch in automotive and industrial DC-DC converters, load switching, and boost regulators.

For engineers reviewing the DMN3112SQ-7 datasheet, DMN3112SQ-7 pinout, DMN3112SQ-7 application, or DMN3112SQ-7 equivalent, key selection criteria include low gate threshold (1.3–2.2V), fast switching speed, 4.5V logic-level drive compatibility, and IATF 16949-manufactured traceability for automotive-grade reliability.

Technical Context

This MOSFET employs planar trench-gate technology to balance low on-resistance and fast switching performance. Its 1.9V typical V_GS(TH) enables robust turn-on with 3.3V/5V microcontroller GPIOs, while C_iss = 268 pF and C_rss = 50 pF support efficient PWM operation up to several hundred kHz.

The device integrates a body diode with V_SD = 0.78V @ 2.0A and exhibits normalized R_DS(ON) drift of ≤1.4× from –55°C to +150°C at V_GS = 4.5V, ensuring stable conduction across automotive temperature ranges.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DSS	30 V - Maximum blocking voltage for 12V automotive rail and 24V industrial systems
R_DS(ON) @ 10V_GS	57 mΩ - Enables ≤330 mW conduction loss at 5.8A, suitable for compact thermal layouts
R_DS(ON) @ 4.5V_GS	112 mΩ - Fully enhanced with standard 3.3V logic, eliminating need for gate boosting
V_GS(TH)	1.3–2.2 V - Ensures reliable turn-on margin over process and temperature variation
C_iss	268 pF - Limits gate drive power requirement and supports <500 ns turn-on time
P_D @ T_A = 25°C	1.4 W - Supports 5.8A continuous operation on FR-4 PCB without heatsink
T_J Range	–55°C to +150°C - Validated for under-hood automotive environments per AEC-Q101

Pinout & Package

Package: SOT23 - Surface-mount plastic package with matte tin annealed terminals, moisture sensitivity level 1, UL 94V-0 rated, weight ≈0.008 g.

Pin/Terminal	Circuit Role	Design Meaning
1 (Source)	Power return path and body diode cathode	Connected to ground or low-side reference; carries full load current and reverse recovery charge
2 (Gate)	Control electrode	High-impedance input requiring ≤80 nA leakage; drives with 268 pF capacitance
3 (Drain)	Power output node	Switches 30V loads; handles 20A pulsed current and 30V blocking during off-state

Key Features

Feature	Design Value
Low R_DS(ON) @ 4.5V_GS	112 mΩ - Enables direct interface with 3.3V MCUs without level-shifting circuitry
Low gate threshold voltage	1.9V typical - Guarantees full enhancement at 2.5V supply, improving noise immunity
Fast switching speed	C_iss/C_rss ratio of 5.4 - Reduces Miller plateau time and improves PWM efficiency
AEC-Q101 qualification	PPAP-capable, IATF 16949 manufacturing - Meets automotive change control and traceability requirements
Green packaging	Halogen- and antimony-free, RoHS 3 compliant - Complies with EU Directive 2015/863/EU

Applications

Automotive Body Control Module

Industrial 24V Load Switch

Use Scenario: Controlling door lock actuators, mirror heaters, and interior lighting in 12V/24V vehicle subsystems.

IC Role / Device Role / Timing Role: Low-side power switch enabling PWM dimming and fault-current limiting via R_DS(ON) sensing.

Use Value: 112 mΩ @ 4.5V_GS ensures <250 mW loss at 1.5A, reducing thermal stress in sealed modules.

Use Scenario: Remote ON/OFF control of solenoids, fans, and sensors in factory automation PLC I/O cards.

IC Role / Device Role / Timing Role: Solid-state replacement for mechanical relays, supporting >100 k-cycle lifetime and <100 ns switching.

Use Value: 20A pulsed rating allows safe inrush current handling for 500 ms motor startup events.

USB-C Power Delivery Sink

Portable Boost Converter

Use Scenario: Input power path management in USB-C PD sink devices requiring reverse-voltage and overcurrent protection.

IC Role / Device Role / Timing Role: Reverse-polarity protection switch placed between connector and buck converter input.

Use Value: Body diode V_SD = 0.78V @ 2A minimizes forward drop, preserving system efficiency during normal operation.

Use Scenario: High-frequency synchronous rectifier in 5V-to-12V boost converters for portable instrumentation.

IC Role / Device Role / Timing Role: Low-loss freewheeling switch replacing Schottky diode to reduce conduction loss by >40%.

Use Value: 57 mΩ R_DS(ON) @ 10V_GS cuts rectifier loss to 330 mW at 5.8A, enabling smaller inductors and capacitors.

Equivalent & Alternatives

The following parts are listed as comparable options for similar N-channel logic-level MOSFET applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
DMN3025LSD-13	Lower R_DS(ON) (25 mΩ @ 4.5V), larger SO-8 package, higher C_iss (620 pF)	Requires PCB area increase; better for high-current (>8A) but lower-frequency (<200 kHz) designs	Select when thermal budget allows SO-8 and peak current exceeds 5.8A
AO3400	Similar R_DS(ON) (45 mΩ @ 10V), non-AEC-Q101, higher V_GS(TH) (2.0–3.0V)	Not qualified for automotive; less margin for 3.3V MCU drive at temperature extremes	Select for cost-sensitive consumer applications where AEC-Q101 is not required

Compared with DMN3112SQ-7, DMN3025LSD-13 offers superior conduction efficiency but sacrifices board space and high-frequency response, while AO3400 reduces cost and footprint but lacks automotive qualification and gate drive margin at low temperatures.

Availability

DMN3112SQ-7 is available at Aetrix Electronics and suitable for automotive body electronics, industrial 24V load switching, and portable power conversion requiring stable component supply, AEC-Q101 compliance, and lead-free green packaging.

Supply support for DMN3112SQ-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 distribution operations across Asia, Europe, and North America.

The DMN3112SQ-7 belongs to Diodes' Automotive Logic-Level MOSFET product line, engineered specifically for high-reliability, low-voltage gate-drive power switching in harsh-environment applications including engine control, ADAS, and infotainment subsystems.

FAQ

Is DMN3112SQ-7 suitable for 3.3V microcontroller gate drive?

Yes. With a typical V_GS(TH) of 1.9V and guaranteed turn-on at 2.2V, the DMN3112SQ-7 fully enhances at 3.3V across its full operating temperature range (–55°C to +150°C). Its 112 mΩ R_DS(ON) @ 4.5V_GS ensures predictable conduction without external level-shifting circuitry.

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

At T_A = 85°C, the DMN3112SQ-7 supports 4.2A continuous drain current, derated from 5.8A at 25°C per its absolute maximum ratings table. This assumes mounting on a standard FR-4 PCB with minimal copper area; thermal performance improves with added copper pour or thermal vias.

Does DMN3112SQ-7 have integrated ESD protection?

No. The DMN3112SQ-7 does not integrate on-chip ESD protection diodes. External TVS or RC snubbers are recommended for gate protection in high-noise environments such as automotive harness interfaces or industrial motor drive proximity zones.

Can DMN3112SQ-7 be used in synchronous rectification?

Yes. Its low R_DS(ON) (57 mΩ @ 10V_GS) and fast switching characteristics (C_iss = 268 pF, C_rss = 50 pF) make it suitable for synchronous rectification in DC-DC converters up to 1 MHz. Ensure gate drive timing avoids shoot-through by using dedicated gate drivers with adjustable dead-time control.

DMN3112SQ-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:: 5.8A (Ta)

Drive Voltage (Max Rds On, Min Rds On):: 4.5V, 10V

Rds On (Max) @ Id, Vgs:: 57mOhm @ 5.8A, 10V

Vgs(th) (Max) @ Id:: 2.2V @ 250µA

Gate Charge (Qg) (Max) @ Vgs:: -

Vgs (Max):: ±20V

Input Capacitance (Ciss) (Max) @ Vds:: 268 pF @ 5 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:: SOT-23-3

DMN3112SQ-7 FAQ

1.How can I place an order for DMN3112SQ-7 through Aetrix?

Please submit a Request for Quotation (RFQ) for DMN3112SQ-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 DMN3112SQ-7 reliable?

The price and inventory of DMN3112SQ-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DMN3112SQ-7 is usually 5 days.

3.What payment methods are accepted for DMN3112SQ-7?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DMN3112SQ-7 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for DMN3112SQ-7?

DMN3112SQ-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your DMN3112SQ-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 DMN3112SQ-7?

For technical support, including DMN3112SQ-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DMN3112SQ-7 requirements.

6.How does Aetrix verify that DMN3112SQ-7 is sourced from the original manufacturer or authorized distributors?

All DMN3112SQ-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 DMN3112SQ-7 meets industry standards.

7.What is the process for return or replacement of DMN3112SQ-7?

All DMN3112SQ-7 units undergo pre-shipment inspection (PSI). If there is an issue with DMN3112SQ-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 DMN3112SQ-7 part is unused and in its original packaging.

Return procedure for DMN3112SQ-7:

1.Submit a request within 90 days.

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

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