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

Diodes Incorporated DMP31D1UW-13

Name: DMP31D1UW-13
Brand: Diodes Incorporated
SKU: DMP31D1UW-13
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: DMP31D1UW-13

Manufacturer:: Diodes Incorporated

Category:: FETs, MOSFETs

Package:: SC-70, SOT-323

Datasheet:: DMP31D1UW-13.pdf

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

Quantity:: RFQ Add To RFQ list

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Product details

Overview

DMP31D1UW-13 from Diodes Incorporated is a P-channel enhancement-mode MOSFET in SOT323 package, rated for -30V V_DSS, 1Ω R_DS(ON) @ V_GS = -4.5V, and -0.6A continuous drain current at +25°C. It serves as a low-power load switch or DC-DC converter synchronous rectifier in space-constrained portable electronics.

For engineers reviewing the DMP31D1UW-13 datasheet, DMP31D1UW-13 pinout, DMP31D1UW-13 application, or DMP31D1UW-13 equivalent, key selection criteria include gate threshold voltage (-0.5 to -1.1V), low input capacitance (54pF C_iss), thermal resistance (220°C/W with copper pad), and RoHS-compliant "Green" packaging.

Technical Context

This MOSFET operates in enhancement mode with negative gate control logic, requiring V_GS ≤ -0.5V to initiate conduction and fully enhancing at V_GS = -4.5V. Its low R_DS(ON) and fast switching (t_D(ON) = 3.8ns, t_F = 20ns) support high-efficiency power management in battery-powered systems.

The device integrates ESD protection on the gate terminal and exhibits low leakage (±10μA I_GSS, -1μA I_DSS) across -55°C to +150°C operating range. Its SOT323 package enables compact PCB layouts while maintaining thermal performance via optimized 2oz copper pad layout per JEDEC standards.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DSS	-30V - maximum blocking voltage before avalanche conduction
R_DS(ON)	1Ω @ V_GS = -4.5V - ensures <120mW conduction loss at 400mA load
I_D (max)	-0.6A @ T_A = +25°C - defines steady-state current capability on standard FR-4 board
V_GS(TH)	-0.5 to -1.1V - enables direct interface with 1.8V/2.5V logic without level shifting
C_iss	54pF - limits gate drive energy and supports >1MHz switching in DC-DC topologies
P_D	0.57W - achievable with 1-inch² copper pour, enabling thermally robust low-power switching
T_J Range	-55°C to +150°C - supports operation in automotive cabin and industrial ambient environments

Pinout & Package

Package: SOT323 - surface-mount plastic package with 3 terminals, 0.006g mass, UL 94V-0 rating, and matte tin–annealed Alloy 42 leadframe.

Pin/Terminal	Circuit Role	Design Meaning
1 (Source)	Current return path for P-channel conduction	Internally connected to substrate; used as reference node for gate control and body diode cathode
2 (Gate)	Control electrode for channel formation	ESD-protected input requiring <10μA leakage; drives with 1.0nC total charge at -4.5V
3 (Drain)	Main current output terminal	High-side switching node; handles -30V reverse bias and -1.9A pulsed current

Key Features

Feature	Design Value
Low gate threshold voltage	V_GS(TH) down to -0.5V enables reliable turn-on from 1.8V microcontroller GPIOs
Low input capacitance	54pF C_iss reduces gate drive power and improves switching efficiency above 500kHz
Fast switching speed	3.8ns turn-on delay + 20ns fall time supports high-frequency synchronous buck converters
ESD-protected gate	HBM rating ≥2kV (per JEDEC JESD22-A114) eliminates need for external gate protection in handheld designs
Halogen- and antimony-free	<900ppm Br, <900ppm Cl, <1000ppm Sb - meets IPC-1752A Class 3 environmental compliance

Applications

USB Power Delivery Switch

Wearable Battery Protection

Use Scenario: Bidirectional 5V power routing in USB-C accessories with overvoltage and reverse-current blocking.

IC Role / Device Role / Timing Role: P-channel load switch controlling VBUS path; body diode blocks reverse current during dead-time transitions.

Use Value: 1Ω R_DS(ON) limits voltage drop to <600mV at 600mA, preserving PD negotiation margins under load.

Use Scenario: Isolation of Li-ion cell from system during charging fault or deep discharge detection.

IC Role / Device Role / Timing Role: High-side disconnect switch activated by fuel gauge IC; fast 20ns fall time prevents latch-up during fault shutdown.

Use Value: -1.1V max V_GS(TH) ensures full enhancement even with aged battery voltage down to 2.8V.

IoT Sensor Node Power Gating

Medical Patch Monitor Load Control

Use Scenario: Periodic wake-up of BLE MCU and analog front-end using ultra-low-quiescent subsystems.

IC Role / Device Role / Timing Role: Low-leakage power rail switch; gate driven by RTC alarm output with <1μA I_DSS preventing standby current degradation.

Use Value: 0.006g mass and SOT323 footprint minimize PCB area in sub-10mm² sensor modules.

Use Scenario: Controlled activation of ECG amplifier and Bluetooth radio in disposable patient monitors.

IC Role / Device Role / Timing Role: Precision load switch enabling <100ms power-up sequencing; low C_iss avoids timing jitter in analog signal chain startup.

Use Value: 220°C/W R_θJA with copper pad sustains 0.5A peak current without derating in sealed plastic housing.

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
DMG1012T-7	R_DS(ON) = 0.35Ω @ V_GS = -4.5V; SOT523 package; higher I_D = -1.2A	Better suited for higher-current loads (>800mA); smaller footprint but lower thermal mass	Select when board space is critical and thermal budget allows tighter copper constraints
AO3401	R_DS(ON) = 0.085Ω @ V_GS = -4.5V; SOT23 package; I_D = -4.2A; no specified halogen-free status	Higher current capacity and lower on-resistance, but larger thermal footprint and non-Green material set	Choose for cost-sensitive industrial designs where environmental compliance is secondary to conduction loss

Compared with DMG1012T-7 and AO3401, DMP31D1UW-13 delivers optimal balance of ultra-low gate threshold, verified halogen-free construction, and thermal performance in minimal SOT323 area-making it preferred for medical wearables and certified consumer electronics.

Availability

DMP31D1UW-13 is available at Aetrix Electronics and suitable for USB power delivery switches, wearable battery protection circuits, and IoT sensor node power gating requiring stable component supply and long-term lifecycle assurance.

Supply support for DMP31D1UW-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 centers across Asia and manufacturing in ASE, Amkor, and its own facilities.

The DMP31D1UW belongs to Diodes' "PowerMOS" product line, engineered specifically for low-voltage, low-power load switching and DC-DC conversion in portable and space-constrained applications.

FAQ

What is the maximum safe gate-source voltage for DMP31D1UW-13?

The absolute maximum V_GS rating is ±8V per the datasheet. Exceeding this risks permanent gate oxide damage. For reliable operation, keep V_GS between -0.5V (threshold) and -4.5V (optimal R_DS(ON)). Transient spikes must be clamped below ±8V using Zener diodes or RC snubbers in noisy environments.

Can DMP31D1UW-13 be used in automotive applications?

DMP31D1UW-13 is not AEC-Q101 qualified. While its -55°C to +150°C operating range meets automotive ambient requirements, Diodes explicitly states that automotive-grade versions require PPAP-capable production in IATF 16949 facilities-this part is manufactured for commercial/industrial use only.

How does the SOT323 package affect thermal performance?

With a 2oz FR-4 board and minimum recommended pad layout, R_θJA is 287°C/W. Using a 1-inch² copper plate reduces it to 220°C/W. The small 0.006g mass enables rapid thermal response but requires careful copper area allocation-no internal layers or thermal vias are specified in the datasheet.

Is the body diode suitable for reverse-current blocking in USB applications?

Yes-the intrinsic body diode has V_SD = -0.8 to -1.2V at -300mA and is rated for -0.48A continuous forward current. In USB-C dead-time control, it blocks reverse current during gate transition, provided V_DS remains within -30V and junction temperature stays below 150°C.

DMP31D1UW-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

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-323

DMP31D1UW-13 FAQ

1.How can I place an order for DMP31D1UW-13 through Aetrix?

Please submit a Request for Quotation (RFQ) for DMP31D1UW-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 DMP31D1UW-13 reliable?

The price and inventory of DMP31D1UW-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DMP31D1UW-13 is usually 5 days.

3.What payment methods are accepted for DMP31D1UW-13?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DMP31D1UW-13 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for DMP31D1UW-13?

DMP31D1UW-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your DMP31D1UW-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 DMP31D1UW-13?

For technical support, including DMP31D1UW-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DMP31D1UW-13 requirements.

6.How does Aetrix verify that DMP31D1UW-13 is sourced from the original manufacturer or authorized distributors?

All DMP31D1UW-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 DMP31D1UW-13 meets industry standards.

7.What is the process for return or replacement of DMP31D1UW-13?

All DMP31D1UW-13 units undergo pre-shipment inspection (PSI). If there is an issue with DMP31D1UW-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 DMP31D1UW-13 part is unused and in its original packaging.

Return procedure for DMP31D1UW-13:

1.Submit a request within 90 days.

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

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