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

Diodes Incorporated DMP31D1UWQ-13

Name: DMP31D1UWQ-13
Brand: Diodes Incorporated
SKU: DMP31D1UWQ-13
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: DMP31D1UWQ-13

Manufacturer:: Diodes Incorporated

Category:: FETs, MOSFETs

Package:: SC-70, SOT-323

Datasheet:: DMP31D1UWQ-13.pdf

Description:: MOSFET BVDSS: 8V~24V SOT323 T&R

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Product details

Overview

DMP31D1UWQ-13 from Diodes Incorporated is a P-channel enhancement-mode MOSFET rated for -30V V_DSS, with R_DS(ON) = 1.0 Ω @ V_GS = -4.5V, I_D = -0.6A at T_A = +25°C, housed in an AEC-Q101 qualified SOT323 package and used as a load switch in automotive power-management circuits.

For engineers reviewing the DMP31D1UWQ-13 datasheet, DMP31D1UWQ-13 pinout, DMP31D1UWQ-13 application, or DMP31D1UWQ-13 equivalent, this page provides verified electrical parameters, thermal performance data, automotive qualification status, and real-world switching behavior under defined gate-drive conditions.

Technical Context

This MOSFET operates in enhancement mode with a gate threshold voltage (V_GS(TH)) ranging from -0.5 V to -1.1 V, enabling low-voltage logic-level control. Its low input capacitance (C_iss = 54 pF) and fast switching times (t_D(ON) = 3.8 ns, t_F = 20 ns) support high-frequency DC-DC converter operation.

The device features ESD-protected gate structure, low leakage (I_DSS ≤ -1 μA), and a body diode with V_SD = -0.8 V to -1.2 V at I_S = -300 mA, supporting bidirectional current handling in synchronous rectification or reverse-polarity protection schemes.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DSS	-30 V - maximum drain-source blocking voltage before avalanche conduction
R_DS(ON)	1.0 Ω @ V_GS = -4.5 V, I_D = -400 mA - on-resistance defining conduction loss in load-switch applications
I_D (max)	-0.6 A @ T_A = +25°C - continuous drain current limit under standard PCB layout conditions
V_GS(TH)	-0.5 to -1.1 V - gate voltage range at which device transitions from cutoff to conduction
C_iss	54 pF @ V_DS = -15 V - input capacitance determining gate drive energy and switching speed
P_D	0.44 W - maximum steady-state power dissipation on FR-4 board with minimum pad layout
T_J Range	-55°C to +150°C - junction temperature range validated for automotive-grade reliability

Pinout & Package

Package: SOT323 - surface-mount plastic package with three terminals, 0.006 g mass, UL 94V-0 rated molding compound, moisture sensitivity level 1 per J-STD-020.

Pin/Terminal	Circuit Role	Design Meaning
G	Gate	Control terminal accepting logic-level negative voltage to turn on P-channel conduction
D	Drain	High-side connection point for load-switch configuration; connects to supply rail
S	Source	Reference terminal tied to load return path; defines V_GS reference for gate drive

Key Features

Feature	Design Value
Low R_DS(ON) at low V_GS	1.5 Ω @ V_GS = -2.5 V enables direct interface with 3.3 V microcontroller GPIOs
Fast switching speed	t_D(OFF) = 45 ns ensures minimal dead-time loss in synchronous buck converters
AEC-Q101 qualification	Validated for automotive power management including infotainment and body electronics
ESD-protected gate	Withstands ≥2 kV HBM per JESD22-A114, reducing risk of assembly-line gate damage

Applications

Automotive Load Switch

USB Port Power Control

Use Scenario: Isolating 12 V battery rail from infotainment module during key-off to prevent parasitic drain.

IC Role / Device Role / Timing Role: High-side P-channel MOSFET configured as active-low load switch controlled by MCU GPIO.

Use Value: R_DS(ON) ≤ 1.5 Ω at V_GS = -2.5 V limits voltage drop to <150 mV at 100 mA load, preserving system sleep current budget.

Use Scenario: Enabling/disabling 5 V USB VBUS to peripheral devices in portable diagnostic tools.

IC Role / Device Role / Timing Role: Low-leakage P-MOSFET acting as ON/OFF switch with <1 μA I_DSS ensuring zero-current standby state.

Use Value: Gate threshold of -1.1 V max allows clean turn-on using 3.3 V logic with margin, eliminating need for level-shifting circuitry.

DC-DC Converter Synchronous Rectifier

Reverse Polarity Protection

Use Scenario: Replacing Schottky diode in 5 V output buck converter for improved efficiency.

IC Role / Device Role / Timing Role: Synchronous rectifier driven by gate driver with matched timing to main switch.

Use Value: C_iss = 54 pF and Q_g = 1.0 nC at V_GS = -4.5 V enable sub-10 ns switching transitions, reducing overlap loss.

Use Scenario: Protecting 3.3 V microcontroller supply against accidental reverse battery connection.

IC Role / Device Role / Timing Role: P-channel MOSFET placed between input and load with source connected to input.

Use Value: Body diode forward voltage V_SD ≤ -1.2 V at -300 mA ensures low-loss conduction when correctly oriented, while blocking reverse current.

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
DMN31D1UWQ-13	N-channel counterpart with same R_DS(ON) and package; requires high-side gate driver or charge pump	Suitable only where gate drive topology supports N-channel high-side switching	Select only if existing design uses bootstrap or charge-pump gate drive and space constraints favor identical footprint
AO3401	R_DS(ON) = 0.085 Ω @ V_GS = -4.5 V but rated only to -30 V; not AEC-Q101 qualified	Lacks automotive qualification and fails PPAP requirements for Tier 1 OEM programs	Acceptable for industrial or consumer DC-DC designs where qualification is not mandated

Compared with DMN31D1UWQ-13 and AO3401, DMP31D1UWQ-13 uniquely combines AEC-Q101 qualification, low gate threshold for 3.3 V logic compatibility, and SOT323 footprint-making it the sole choice for automotive load-switch applications requiring change-controlled manufacturing and IATF 16949 traceability.

Availability

DMP31D1UWQ-13 is available at Aetrix Electronics and suitable for automotive body electronics, USB power delivery modules, and industrial DC-DC converters requiring stable component supply across multi-year production cycles.

Supply support for DMP31D1UWQ-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 DMP31D1UWQ belongs to Diodes' automotive-qualified small-signal MOSFET product line, engineered specifically for space-constrained, high-reliability load-switch and power-management functions in vehicles and portable electronics.

FAQ

What is the maximum allowable gate-source voltage for DMP31D1UWQ-13?

The absolute maximum V_GS rating is ±8 V. Exceeding this value risks permanent gate oxide damage. In practice, gate drive should be limited to -4.5 V for optimal R_DS(ON) and -2.5 V for logic-level compatibility, both well within safe operating limits and validated in the datasheet's electrical characteristics table.

Does DMP31D1UWQ-13 require a gate resistor for stability?

A gate resistor is recommended to dampen ringing caused by gate-drain capacitance (C_rss = 5.8 pF) and PCB trace inductance. Typical values range from 10 Ω to 100 Ω depending on switching frequency and drive strength; the datasheet specifies t_D(ON) and t_F test conditions using R_G = 6 Ω, confirming its suitability for high-speed operation with moderate damping.

Can DMP31D1UWQ-13 be used in linear regulation mode?

No-it is not characterized or rated for linear (ohmic) operation. The Safe Operating Area (SOA) curve shows only single-pulse and short-duration DC limits (e.g., 0.6 A at V_DS < 5 V for 10 s), with no continuous linear derating data. Use only in saturated switching mode to avoid thermal runaway and parametric shift.

Is the SOT323 package of DMP31D1UWQ-13 compatible with reflow soldering per J-STD-020?

Yes-the device is rated for moisture sensitivity level 1 and qualified for standard Pb-free reflow profiles up to 260°C peak temperature. The datasheet confirms compliance with JEDEC J-STD-020, and the matte tin annealed leadframe meets MIL-STD-202 Method 208 solderability requirements without pre-baking.

DMP31D1UWQ-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:: 600mA (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):: 440mW (Ta)

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

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-323

DMP31D1UWQ-13 FAQ

1.How can I place an order for DMP31D1UWQ-13 through Aetrix?

Please submit a Request for Quotation (RFQ) for DMP31D1UWQ-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 DMP31D1UWQ-13 reliable?

The price and inventory of DMP31D1UWQ-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DMP31D1UWQ-13 is usually 5 days.

3.What payment methods are accepted for DMP31D1UWQ-13?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DMP31D1UWQ-13 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for DMP31D1UWQ-13?

DMP31D1UWQ-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your DMP31D1UWQ-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 DMP31D1UWQ-13?

For technical support, including DMP31D1UWQ-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DMP31D1UWQ-13 requirements.

6.How does Aetrix verify that DMP31D1UWQ-13 is sourced from the original manufacturer or authorized distributors?

All DMP31D1UWQ-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 DMP31D1UWQ-13 meets industry standards.

7.What is the process for return or replacement of DMP31D1UWQ-13?

All DMP31D1UWQ-13 units undergo pre-shipment inspection (PSI). If there is an issue with DMP31D1UWQ-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 DMP31D1UWQ-13 part is unused and in its original packaging.

Return procedure for DMP31D1UWQ-13:

1.Submit a request within 90 days.

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

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