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

Diodes Incorporated DMP31D7LWQ-13

Name: DMP31D7LWQ-13
Brand: Diodes Incorporated
SKU: DMP31D7LWQ-13
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: DMP31D7LWQ-13

Manufacturer:: Diodes Incorporated

Category:: FETs, MOSFETs

Package:: SC-70, SOT-323

Datasheet:: DMP31D7LWQ-13.pdf

Description:: MOSFET BVDSS: 25V~30V SOT323 T&R

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Product details

Overview

DMP31D7LWQ-13 from Diodes Incorporated is a P-channel enhancement-mode MOSFET rated for -30V V_DSS, 0.9Ω R_DS(ON) at V_GS = -10V, and -0.52A continuous drain current at T_A = +25°C. It serves as a low-side load switch or synchronous rectifier in automotive DC-DC converters and power management circuits, qualified to AEC-Q101 with PPAP support.

For engineers reviewing the DMP31D7LWQ-13 datasheet, DMP31D7LWQ-13 pinout, DMP31D7LWQ-13 application, or DMP31D7LWQ-13 equivalent, key selection criteria include gate threshold voltage (-2.0V typ), low input capacitance (19pF C_iss), thermal resistance (424°C/W R_θJA), and SOT323 package compatibility with space-constrained automotive PCB layouts.

Technical Context

This MOSFET operates in enhancement mode with a negative gate threshold voltage range of -1.0V to -2.6V, enabling direct interface with 3.3V/5V logic controllers without level shifting. Its low R_DS(ON) at V_GS = -4.5V (1.7Ω) supports efficient operation in 5V-rail load switching applications.

The device integrates an intrinsic body diode with V_SD = -0.8V at I_S = -0.23A and exhibits fast switching performance: t_D(ON) = 30ns, t_R = 74ns, t_D(OFF) = 28ns, and t_F = 31ns under standard test conditions (V_DD = -10V, R_L = 47Ω, R_g = 10Ω).

Key Specifications

Parameter	Value and Actual Design Meaning
V_DSS	-30V - Maximum drain-source blocking voltage before avalanche conduction
R_DS(ON)	0.9Ω @ V_GS = -10V - On-resistance determines conduction loss in load-switching path
I_D (max)	-0.52A @ T_A = +25°C - Continuous current handling capability under standard board conditions
V_GS(TH)	-2.0V (typ) - Gate voltage at which device begins conducting; enables 3.3V logic compatibility
C_iss	19pF - Input capacitance affects gate drive energy and switching speed
R_θJA	424°C/W - Thermal resistance defines junction-to-ambient temperature rise per watt dissipated
Q_g	0.36nC - Total gate charge determines required driver current for fast turn-on/turn-off

Pinout & Package

Package: SOT323 - Surface-mount plastic package with 3 terminals, 0.006g mass, moisture sensitivity level 1, and UL 94V-0 flammability rating.

Pin/Terminal	Circuit Role	Design Meaning
1 (Source)	Current return path for P-channel device	Connected to higher potential rail; referenced for gate control
2 (Gate)	Control terminal for channel formation	Receives negative V_GS to enable conduction; ESD-protected
3 (Drain)	Current output terminal	Connected to load; handles reverse-biased body diode conduction during freewheeling

Key Features

Feature	Design Value
Low R_DS(ON) at -4.5V	1.7Ω - Enables use with 5V microcontroller GPIOs without external level shifters
Low gate threshold voltage	-2.0V typical - Reduces risk of partial turn-on during logic transitions
ESD-protected gate	HBM >2kV - Improves robustness during PCB handling and assembly
Fast switching speed	t_R = 74ns - Minimizes overlap conduction loss in synchronous buck topologies
AEC-Q101 qualification	PPAP-capable, IATF16949 manufacturing - Required for automotive power subsystems

Applications

Automotive DC-DC Converters

Body Control Module Load Switches

Use Scenario: Synchronous rectification in 12V-to-5V/3.3V buck converters powering infotainment and ADAS sensors.

IC Role / Device Role / Timing Role: Low-side synchronous rectifier replacing Schottky diode to reduce conduction loss.

Use Value: 0.9Ω R_DS(ON) at -10V reduces power loss by >60% versus 0.4V-drop Schottky at 0.5A load.

Use Scenario: Controlled power gating for LED lighting, window motors, and HVAC actuators in BCMs.

IC Role / Device Role / Timing Role: High-side or low-side load switch with controlled inrush current.

Use Value: -2.0V V_GS(TH) allows direct drive from 3.3V CAN/LIN transceiver I/O pins.

Engine Control Unit Power Management

Advanced Driver Assistance Systems (ADAS) Sensors

Use Scenario: Power sequencing and fault-isolation for fuel injector drivers and ignition coils.

IC Role / Device Role / Timing Role: Protected high-side switch with integrated body diode for inductive kickback clamping.

Use Value: 1.7Ω R_DS(ON) at -4.5V ensures <100mW conduction loss at 250mA peak coil current.

Use Scenario: Power delivery to radar MMICs, camera ISPs, and ultrasonic transceivers requiring clean, sequenced supply rails.

IC Role / Device Role / Timing Role: Low-noise, low-leakage load switch for always-on sensor biasing.

Use Value: <1μA I_DSS prevents battery drain in sleep mode over 10-year vehicle lifetime.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
DMN31D7LWQ-13	N-channel counterpart with +30V V_DSS, 0.85Ω R_DS(ON) @ V_GS = +10V	Requires high-side gate driver or bootstrap circuit; unsuitable for direct low-side logic control	Select only when topology mandates N-channel configuration and gate drive resources exist.
AO3401	Higher R_DS(ON) (1.1Ω @ -4.5V), no AEC-Q101 qualification, 350mW P_D	Not approved for automotive production; limited to consumer or industrial prototypes	Acceptable for non-safety-critical bench testing but not for PPAP-submission designs.

Compared with DMN31D7LWQ-13 and AO3401, DMP31D7LWQ-13 uniquely combines AEC-Q101 qualification, -2.0V gate threshold for 3.3V logic compatibility, and 0.9Ω on-resistance in SOT323-making it the only drop-in solution for automotive-grade low-side switching where board space and qualification are constrained.

Availability

DMP31D7LWQ-13 is available at Aetrix Electronics and suitable for automotive DC-DC converters, body control module load switches, and engine control unit power management requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for DMP31D7LWQ-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, manufacturing, and sales operations across Asia, Europe, and North America.

The DMP31D7LWQ belongs to Diodes' automotive-qualified power MOSFET product line, engineered specifically for high-reliability load switching and power conversion in AEC-Q101-compliant vehicle subsystems.

FAQ

What is the maximum operating junction temperature for DMP31D7LWQ-13?

The DMP31D7LWQ-13 has a specified operating junction temperature range of -55°C to +150°C. Its thermal resistance R_θJA is 424°C/W under standard FR-4 board conditions (2oz copper, 1-inch square pad), meaning at 290mW power dissipation, junction temperature rises ~123°C above ambient-well within safe limits at T_A ≤ +27°C.

Does DMP31D7LWQ-13 support 3.3V logic-level gate drive?

Yes. With a typical gate threshold voltage of -2.0V and maximum of -2.6V, DMP31D7LWQ-13 fully turns on using a -3.3V gate-source voltage, delivering R_DS(ON) ≤ 1.7Ω. This enables direct interface with 3.3V microcontrollers without level-shifting circuitry.

Is the body diode in DMP31D7LWQ-13 suitable for freewheeling in inductive loads?

Yes. The intrinsic body diode has a forward voltage of -0.8V at -0.23A and is rated for -0.42A continuous forward current. Its reverse recovery time is not specified, but the device's low Q_gd (0.1nC) and fast switching times (t_F = 31ns) support efficient freewheeling in low-power inductive applications like solenoid drivers.

How does the SOT323 package affect thermal performance in high-current applications?

The SOT323 package limits power dissipation to 290mW at T_A = +25°C due to its high R_θJA of 424°C/W. For sustained 0.5A operation, board layout must include thermal vias and copper pour to reduce effective R_θJA; otherwise, derating to ≤0.3A is recommended to maintain T_J < 125°C.

DMP31D7LWQ-13 Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: -

Package/Case:: SC-70, SOT-323

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:: 380mA (Ta)

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

Rds On (Max) @ Id, Vgs:: 900mOhm @ 420mA, 10V

Vgs(th) (Max) @ Id:: 2.6V @ 250µA

Gate Charge (Qg) (Max) @ Vgs:: 0.36 nC @ 10 V

Vgs (Max):: ±20V

Input Capacitance (Ciss) (Max) @ Vds:: 19 pF @ 15 V

FET Feature:: -

Power Dissipation (Max):: 290mW

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

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-323

DMP31D7LWQ-13 FAQ

1.How can I place an order for DMP31D7LWQ-13 through Aetrix?

Please submit a Request for Quotation (RFQ) for DMP31D7LWQ-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 DMP31D7LWQ-13 reliable?

The price and inventory of DMP31D7LWQ-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DMP31D7LWQ-13 is usually 5 days.

3.What payment methods are accepted for DMP31D7LWQ-13?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DMP31D7LWQ-13 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for DMP31D7LWQ-13?

DMP31D7LWQ-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your DMP31D7LWQ-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 DMP31D7LWQ-13?

For technical support, including DMP31D7LWQ-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DMP31D7LWQ-13 requirements.

6.How does Aetrix verify that DMP31D7LWQ-13 is sourced from the original manufacturer or authorized distributors?

All DMP31D7LWQ-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 DMP31D7LWQ-13 meets industry standards.

7.What is the process for return or replacement of DMP31D7LWQ-13?

All DMP31D7LWQ-13 units undergo pre-shipment inspection (PSI). If there is an issue with DMP31D7LWQ-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 DMP31D7LWQ-13 part is unused and in its original packaging.

Return procedure for DMP31D7LWQ-13:

1.Submit a request within 90 days.

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

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