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

Diodes Incorporated DMP31D7LT-7

Name: DMP31D7LT-7
Brand: Diodes Incorporated
SKU: DMP31D7LT-7
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: DMP31D7LT-7

Manufacturer:: Diodes Incorporated

Category:: FETs, MOSFETs

Package:: SOT-523

Datasheet:: DMP31D7LT-7.pdf

Description:: MOSFET BVDSS: 25V~30V SOT523 T&R

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Product details

Overview

DMP31D7LT-7 from Diodes Incorporated is a P-channel enhancement-mode MOSFET in SOT523 package, rated for -30V V_DSS, 0.9Ω R_DS(ON) @ V_GS = -10V, and -0.5A continuous drain current at +25°C. It delivers low gate threshold voltage (-1 to -2.6V), fast switching (t_D(ON) = 30ns), and ESD-protected gate - optimized for compact DC-DC converter load switches.

For engineers reviewing the DMP31D7LT-7 datasheet, DMP31D7LT-7 pinout, DMP31D7LT-7 application, or DMP31D7LT-7 equivalent, key selection criteria include verified R_DS(ON) at -4.5V (1.7Ω), thermal resistance (377°C/W with copper plate), and SOT523 terminal layout compatibility with space-constrained portable power rails.

Technical Context

This MOSFET operates as a high-side load switch in low-voltage power management systems, leveraging its negative V_GS(TH) range (-1 to -2.6V) to enable direct control from 3.3V or 5V logic without level shifting. Its low C_iss (19pF) and C_oss (16pF) support efficient high-frequency switching up to several hundred kHz.

The device integrates an intrinsic body diode with V_SD = -0.8 to -1.2V at -0.23A, enabling bidirectional current handling in reverse-polarity protection circuits. Thermal performance is defined under two PCB conditions: 488°C/W on minimal FR-4 pad and 377°C/W with 1-inch² copper, confirming design dependency on layout.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DSS	-30V - Maximum blocking voltage before avalanche conduction in high-side switch configurations
R_DS(ON) @ V_GS = -10V	0.45–0.9Ω - Confirmed on-resistance enabling ≤420mA continuous conduction with <0.16W I²R loss
R_DS(ON) @ V_GS = -4.5V	0.7–1.7Ω - Validated performance at common logic-level gate drive, critical for 3.3V microcontroller interfaces
Q_g	0.36nC - Low total gate charge reduces driver power and enables fast turn-on (t_D(ON) = 30ns)
T_J Range	-55°C to +150°C - Qualified for extended industrial and automotive ambient environments
P_D (copper plate)	0.33W - Power dissipation limit with 1-inch² copper, defining maximum steady-state load capability
C_iss	19pF - Input capacitance determining gate drive strength requirement and switching speed ceiling

Pinout & Package

Package: SOT523 - ultra-small surface-mount plastic package (1.60 × 1.60 × 0.75 mm), moisture sensitivity level 1, matte tin-plated Alloy 42 leadframe, UL 94V-0 rated molding compound.

Pin/Terminal	Circuit Role	Design Meaning
1 (Source)	Current return path for P-channel operation	Connected to higher potential rail; defines reference for gate drive and body diode cathode
2 (Gate)	Control electrode for channel formation	ESD-protected input requiring ≤±20V bias; threshold voltage enables 3.3V-compatible turn-on
3 (Drain)	Current output terminal	Connected to load; withstands -30V reverse bias and conducts up to -0.36A continuously at +70°C

Key Features

Feature	Design Value
Low R_DS(ON) at -4.5V	1.7Ω max ensures <0.3W conduction loss at 0.36A, critical for battery-powered efficiency
Low V_GS(TH)	-1 to -2.6V range allows reliable turn-on with standard 3.3V GPIO, eliminating external level shifters
Fast switching	30ns turn-on delay + 74ns rise time supports >500kHz PWM in compact DC-DC stages
ESD-protected gate	HBM rating ≥2kV per JEDEC JS-001, reducing board-level ESD hardening requirements
Green packaging	Halogen- and antimony-free, RoHS 3 compliant (≤900ppm Br/Cl, ≤1000ppm Sb), meeting automotive supply chain mandates

Applications

Battery-Powered Load Switch

USB Port Power Control

Use Scenario: Enabling/disabling power to peripheral modules in wearables and IoT sensors to extend battery life.

IC Role / Device Role / Timing Role: High-side P-channel MOSFET switch controlled by MCU GPIO, operating in static on/off mode.

Use Value: 1.7Ω R_DS(ON) at -4.5V limits dropout to <0.8V at 0.36A, preserving system voltage headroom.

Use Scenario: Providing overcurrent and reverse-polarity protection for USB Type-A downstream ports.

IC Role / Device Role / Timing Role: Reverse-voltage blocking element with integrated body diode conducting forward current during normal operation.

Use Value: -30V V_DSS and -0.8V V_SD ensure safe clamping of ±20V transients and low-loss forward conduction.

Point-of-Load DC-DC Converter

Industrial Sensor Node Power Gating

Use Scenario: Synchronous rectification or high-side switch in buck converter output stage for sub-1W applications.

IC Role / Device Role / Timing Role: Fast-switching P-MOSFET driven by dedicated gate controller, operating at 300–600kHz.

Use Value: 0.36nC Q_g and 19pF C_iss minimize gate drive losses and support clean edge transitions.

Use Scenario: Isolating analog sensor circuitry during MCU sleep cycles in factory automation nodes.

IC Role / Device Role / Timing Role: Low-leakage (≤1μA IDSS) power gate activated only during measurement windows.

Use Value: -1μA IDSS at -24V ensures <100nW standby power draw, extending multi-year battery life.

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
DMN31D7L-7	SOT523 P-MOSFET, identical V_DSS (-30V) but higher R_DS(ON) (2.2Ω @ -4.5V)	Higher conduction loss limits use to ≤200mA loads; less suitable for 3.3V logic-driven full-current switching	Select when cost priority outweighs R_DS(ON) and thermal margin is ample
AO3401	SOT23 P-MOSFET, -30V V_DSS, 0.085Ω R_DS(ON) @ -10V but larger footprint and no specified -4.5V R_DS(ON)	Higher current capacity (−4.2A) but incompatible with ultra-dense layouts requiring SOT523 size	Select when higher current and thermal mass are needed, and board area permits SOT23

Compared with DMN31D7L-7 and AO3401, DMP31D7LT-7 uniquely balances ultra-small SOT523 form factor, verified -4.5V R_DS(ON), and ESD protection-making it optimal for space-constrained, 3.3V-controlled, sub-0.4A load switching where thermal budget is tight.

Availability

DMP31D7LT-7 is available at Aetrix Electronics and suitable for battery-powered load switches, USB port power controllers, point-of-load DC-DC converters, and industrial sensor node power gating requiring stable component supply across production lifecycles.

Supply support for DMP31D7LT-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 power management, signal integrity, and protection solutions for industrial, computing, and consumer markets.

The DMP31D7LT-7 belongs to Diodes' "PowerMOS" portfolio, engineered specifically for ultra-compact, low-voltage load switching in portable and space-constrained electronics where gate drive simplicity and thermal efficiency are critical.

FAQ

What is the maximum continuous drain current for DMP31D7LT-7 at +70°C ambient?

The maximum continuous drain current is -0.28A at TA = +70°C with device mounted on FR-4 PCB using 1-inch² copper plate (PD = 0.33W, RθJA = 377°C/W). This reflects derating from the +25°C rating of -0.36A due to thermal resistance limitations.

Does DMP31D7LT-7 support logic-level gate drive from a 3.3V microcontroller?

Yes - its gate threshold voltage range of -1V to -2.6V ensures robust turn-on with 3.3V logic (VGS = -3.3V), and RDS(ON) is fully characterized at -4.5V, providing margin for stable conduction even with supply droop or noise.

Is the body diode in DMP31D7LT-7 suitable for reverse-polarity protection?

Yes - the intrinsic body diode has VSD = -0.8 to -1.2V at -0.23A and is rated for continuous forward current up to -0.36A, making it effective for reverse-voltage blocking in low-power supply inputs when configured as a high-side switch.

What is the moisture sensitivity level (MSL) and reflow profile compliance for SOT523 packaging?

DMP31D7LT-7 has MSL Level 1 per J-STD-020, meaning it is not moisture-sensitive and can be subjected to unlimited floor life and standard Pb-free reflow profiles (peak 260°C) without baking preconditioning.

DMP31D7LT-7 Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: -

Package/Case:: SOT-523

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:: 360mA (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 @ 4.5 V

Vgs (Max):: ±20V

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

FET Feature:: -

Power Dissipation (Max):: 260mW (Ta)

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-523

DMP31D7LT-7 FAQ

1.How can I place an order for DMP31D7LT-7 through Aetrix?

Please submit a Request for Quotation (RFQ) for DMP31D7LT-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 DMP31D7LT-7 reliable?

The price and inventory of DMP31D7LT-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DMP31D7LT-7 is usually 5 days.

3.What payment methods are accepted for DMP31D7LT-7?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DMP31D7LT-7 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for DMP31D7LT-7?

DMP31D7LT-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your DMP31D7LT-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 DMP31D7LT-7?

For technical support, including DMP31D7LT-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DMP31D7LT-7 requirements.

6.How does Aetrix verify that DMP31D7LT-7 is sourced from the original manufacturer or authorized distributors?

All DMP31D7LT-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 DMP31D7LT-7 meets industry standards.

7.What is the process for return or replacement of DMP31D7LT-7?

All DMP31D7LT-7 units undergo pre-shipment inspection (PSI). If there is an issue with DMP31D7LT-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 DMP31D7LT-7 part is unused and in its original packaging.

Return procedure for DMP31D7LT-7:

1.Submit a request within 90 days.

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

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