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

Diodes Incorporated DMP31D1UQ-7

Name: DMP31D1UQ-7
Brand: Diodes Incorporated
SKU: DMP31D1UQ-7
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: DMP31D1UQ-7

Manufacturer:: Diodes Incorporated

Category:: FETs, MOSFETs

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

Datasheet:: DMP31D1UQ-7.pdf

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

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Product details

Overview

DMP31D1UQ-7 from Diodes Incorporated is a 30V P-channel enhancement-mode MOSFET in SOT23 package, rated for -0.62A continuous drain current at V_GS = -4.5V, with R_DS(ON) = 1Ω max, AEC-Q101 qualified, and designed for automotive load switching in portable electronics.

For engineers reviewing the DMP31D1UQ-7 datasheet, DMP31D1UQ-7 pinout, DMP31D1UQ-7 application, or DMP31D1UQ-7 equivalent, key selection criteria include gate threshold voltage (-0.5 to -1.1V), low R_DS(ON) at low V_GS, ESD-protected gate, thermal resistance (R_θJA = 214°C/W), and AEC-Q101 qualification for automotive-grade reliability.

Technical Context

This P-channel MOSFET operates as a high-side load switch with low gate threshold enabling direct control from 3.3V/5V logic. Its ESD-protected gate and ±8V V_GSS rating support robust operation in noisy automotive environments.

The device delivers fast switching (t_D(ON) = 3.8ns, t_F = 20ns) and low dynamic capacitance (C_iss = 54pF, C_rss = 5.8pF), optimized for efficient power management in space-constrained portable systems.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DSS	-30V - supports 24V automotive rail with margin against transients
R_DS(ON)	1Ω @ V_GS = -4.5V - enables <1V drop at 0.4A, minimizing conduction loss
I_D	-0.62A @ T_A = +25°C - suitable for low-power load switching (e.g., USB peripherals, sensors)
V_GS(TH)	-0.5 to -1.1V - ensures reliable turn-on with 1.8V–3.3V logic-level drive
Q_g	1.0nC @ V_GS = -4.5V - reduces gate drive power and switching loss in battery-powered systems
R_θJA	214°C/W - defines thermal derating on standard FR-4 PCB with minimum pad layout
E_SD	ESD protected gate (HBM >2kV per JESD22-A114) - eliminates need for external protection in most layouts

Pinout & Package

Package: SOT23 - surface-mount plastic package (2.4mm × 1.3mm × 0.915mm), RoHS-compliant, halogen-free, moisture sensitivity level 1.

Pin/Terminal	Circuit Role	Design Meaning
1 (Source)	Current return path for P-channel channel	Connected to higher potential rail (e.g., battery V_BAT) in high-side switch configuration
2 (Gate)	Control terminal for channel conduction	Accepts negative V_GS relative to source; low V_GS(TH) enables logic-compatible drive
3 (Drain)	Current output terminal	Connects to load; body diode anode faces source, enabling reverse-current blocking in load-switch applications

Key Features

Feature	Design Value
Low gate threshold voltage	V_GS(TH) down to -0.5V ensures full enhancement with 1.8V microcontroller I/O
Fast switching speed	t_F = 20ns and t_D(OFF) = 45ns minimize transition losses in PWM-controlled loads
ESD-protected gate	Integrated protection eliminates external TVS requirement in typical automotive PCB layouts
AEC-Q101 qualification	Validated for automotive temperature range (-55°C to +150°C) and PPAP-capable manufacturing
Green packaging	Halogen- and antimony-free molding compound (<900ppm Br+Cl, <1000ppm Sb) meets global environmental standards

Applications

Automotive Body Control Module

USB Power Switching

Use Scenario: Controlling power to interior lighting, door locks, or HVAC sensors in 12V/24V vehicle subsystems.

IC Role / Device Role / Timing Role: High-side load switch managing power delivery with reverse-polarity and transient protection.

Use Value: Low R_DS(ON) at -2.5V V_GS ensures minimal voltage drop and heat generation during sustained 0.5A operation.

Use Scenario: Enabling/disabling VBUS power to USB peripherals in automotive infotainment head units.

IC Role / Device Role / Timing Role: Logic-controlled power gate with fast turn-off to prevent backfeed during hot-plug events.

Use Value: Fast fall time (t_F = 20ns) and low Q_gd (0.1nC) suppress voltage overshoot during load disconnect.

Portable Medical Device Power Management

Industrial Sensor Node Load Switch

Use Scenario: Isolating battery power from diagnostic sensors or display modules in handheld medical instruments.

IC Role / Device Role / Timing Role: Low-quiescent-current load switch activated by MCU GPIO to extend battery life.

Use Value: Gate leakage <±10μA and sub-1μA IDSS ensure negligible standby current drain over multi-year device lifetime.

Use Scenario: Power gating discrete analog front-end circuits (e.g., RTD amplifiers, ADC references) in IIoT sensor nodes.

IC Role / Device Role / Timing Role: Precision-controlled power enable with thermal stability across -40°C to +85°C ambient.

Use Value: R_DS(ON) variation <±15% from -55°C to +125°C ensures consistent performance without calibration.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
DMG3415L-7	R_DS(ON) = 0.045Ω @ V_GS = -4.5V (10× lower), but larger SOP-8 package and higher Q_g (12nC)	Requires more PCB area and stronger gate drive; suited for higher-current (>2A) loads	Select when higher current capacity and lower conduction loss outweigh size and drive constraints
AO3401A	R_DS(ON) = 0.085Ω @ V_GS = -4.5V, same SOT23 package, but not AEC-Q101 qualified	Lacks automotive qualification and PPAP support; limited to commercial-temperature industrial use	Select only for non-automotive applications where cost is prioritized over qualification and extended temperature range

Compared with DMG3415L-7 and AO3401A, DMP31D1UQ-7 uniquely balances AEC-Q101 compliance, SOT23 footprint, and low-V_GS drive capability-making it optimal for space-constrained, automotive-grade 0.5A load switching where qualification and board area are critical.

Availability

DMP31D1UQ-7 is available at Aetrix Electronics and suitable for automotive body control modules, USB power switching, and portable medical device power management requiring stable component supply and long-term lifecycle support.

Supply support for DMP31D1UQ-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 consumer markets.

DMP31D1UQ-7 belongs to Diodes' AEC-Q101-qualified power MOSFET product line, engineered specifically for automotive load switching where low gate drive voltage, small footprint, and robust thermal performance are essential.

FAQ

Is DMP31D1UQ-7 suitable for high-side switching in 24V automotive systems?

Yes. With V_DSS = -30V and AEC-Q101 qualification, it supports 24V nominal systems including load-dump transients up to ISO 7637-2 Pulse 5a (35V). Its R_DS(ON) remains stable across -55°C to +150°C junction temperature, ensuring reliable operation under hood conditions.

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

At T_A = +85°C, the maximum continuous drain current is -0.5A (per datasheet Note 5, FR-4 board with 2oz copper and minimum pad layout). Derating follows R_θJA = 214°C/W, requiring thermal design consideration for sustained operation above 60°C ambient.

Does DMP31D1UQ-7 include integrated body diode protection?

It features an inherent parasitic body diode (anode at source, cathode at drain), rated for -0.65A continuous forward current. This diode enables freewheeling in inductive loads but is not optimized for reverse recovery; external flyback diodes are recommended for high-di/dt inductive switching.

Can DMP31D1UQ-7 be driven directly from a 3.3V microcontroller GPIO?

Yes. With V_GS(TH) as low as -0.5V and guaranteed turn-on at V_GS = -2.5V, a 3.3V GPIO pulling gate to ground yields V_GS ≈ -3.3V relative to source (assuming source at 3.3V or higher), fully enhancing the channel and achieving R_DS(ON) ≤ 1.5Ω.

DMP31D1UQ-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:: P-Channel

Technology:: MOSFET (Metal Oxide)

Drain to Source Voltage (Vdss):: 30 V

Current - Continuous Drain (Id) @ 25°C:: 620mA (Ta)

Drive Voltage (Max Rds On, Min Rds On):: 1.8V, 4.5V

Rds On (Max) @ Id, Vgs:: 1Ohm @ 400mA, 4.5V

Vgs(th) (Max) @ Id:: 1.1V @ 250µA

Gate Charge (Qg) (Max) @ Vgs:: 1.6 nC @ 8 V

Vgs (Max):: ±8V

Input Capacitance (Ciss) (Max) @ Vds:: 54 pF @ 15 V

FET Feature:: -

Power Dissipation (Max):: 460mW (Ta)

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

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-23-3

DMP31D1UQ-7 FAQ

1.How can I place an order for DMP31D1UQ-7 through Aetrix?

Please submit a Request for Quotation (RFQ) for DMP31D1UQ-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 DMP31D1UQ-7 reliable?

The price and inventory of DMP31D1UQ-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DMP31D1UQ-7 is usually 5 days.

3.What payment methods are accepted for DMP31D1UQ-7?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DMP31D1UQ-7 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for DMP31D1UQ-7?

DMP31D1UQ-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your DMP31D1UQ-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 DMP31D1UQ-7?

For technical support, including DMP31D1UQ-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DMP31D1UQ-7 requirements.

6.How does Aetrix verify that DMP31D1UQ-7 is sourced from the original manufacturer or authorized distributors?

All DMP31D1UQ-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 DMP31D1UQ-7 meets industry standards.

7.What is the process for return or replacement of DMP31D1UQ-7?

All DMP31D1UQ-7 units undergo pre-shipment inspection (PSI). If there is an issue with DMP31D1UQ-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 DMP31D1UQ-7 part is unused and in its original packaging.

Return procedure for DMP31D1UQ-7:

1.Submit a request within 90 days.

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

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