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

Infineon Technologies IRLML2402TRPBF

Name: IRLML2402TRPBF
Brand: Infineon Technologies
SKU: IRLML2402TRPBF
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: IRLML2402TRPBF

Manufacturer:: Infineon Technologies

Category:: FETs, MOSFETs

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

Datasheet:: IRLML2402TRPBF.pdf

Description:: MOSFET N-CH 20V 1.2A SOT23

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Product details

Overview

IRLML2402TRPBF from Infineon Technologies is a 20 V, 1.2 A N-channel enhancement-mode MOSFET in Micro3™ (SOT-23) package with 200 mΩ R_DS(on) at V_GS = 4.5 V, 1.5 V gate threshold, and 0.93 A continuous drain current - used for low-side load switching in portable power management circuits.

For engineers reviewing the IRLML2402TRPBF datasheet, IRLML2402TRPBF pinout, IRLML2402TRPBF application, or IRLML2402TRPBF equivalent, key selection criteria include logic-level gate drive compatibility, thermal performance in SOT-23 footprint, on-resistance stability across temperature, and body diode recovery behavior in DC-DC synchronous rectification.

Technical Context

This MOSFET employs planar trench-gate technology optimized for low-voltage logic-level operation. It features a 1.5 V typical V_GS(th), enabling direct drive from 1.8 V/3.3 V microcontrollers without level shifting, and exhibits R_DS(on) of 200 mΩ at 4.5 V and 300 mΩ at 2.5 V.

The device integrates a fast-recovery body diode with t_rr < 48 ns and Q_rr = 12 nC at I_F = 0.93 A, supporting efficient synchronous buck operation. Its thermal resistance R_θJA is 200 °C/W (standard PCB layout), limiting continuous power dissipation to ~250 mW at T_A = 25 °C.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	20 V - Maximum drain-source blocking voltage; suitable for 12 V rail and USB-powered systems.
R_DS(on) @ V_GS = 4.5 V	200 mΩ - Enables ≤180 mW conduction loss at 0.93 A; critical for battery runtime in portable devices.
I_D (continuous)	1.2 A - Rated drain current with derating above 25 °C; supports typical LED drivers and fan controllers.
V_GS(th)	1.5 V (typ), ≤2.5 V (max) - Ensures reliable turn-on with 1.8 V GPIOs; eliminates need for gate driver ICs.
Q_G	4.2 nC - Low total gate charge enables fast switching with minimal drive strength; reduces gate driver losses.
C_iss	270 pF - Input capacitance impacts gate drive timing and EMI; compatible with standard MCU PWM frequencies up to 1 MHz.
T_J max	150 °C - Junction temperature limit defines safe operating area under pulsed loads and ambient thermal constraints.

Pinout & Package

IRLML2402TRPBF uses the Micro3™ package (JEDEC TO-236AB / SOT-23), a surface-mount 3-pin plastic case with Gull-wing leads. The package measures 2.9 mm × 1.3 mm × 1.0 mm and is optimized for high-density PCB layouts with minimal thermal pad area.

Pin/Terminal	Circuit Role	Design Meaning
1 (Gate)	Control electrode	Receives logic-level voltage to modulate channel conductivity; requires no external pull-down resistor in most applications.
2 (Drain)	High-side current path	Connected to load supply rail; handles full switched current and must be routed with adequate copper area for thermal relief.
3 (Source)	Reference node / return path	Bonded to internal substrate; forms common reference for gate drive and provides body diode cathode connection.

Key Features

Feature	Design Value
Logic-level gate drive	Operates fully enhanced down to 2.5 V V_GS, enabling direct interface with 1.8 V/3.3 V MCUs and PMICs.
Low R_DS(on) at 4.5 V	200 mΩ ensures sub-200 mW conduction loss at rated current, extending battery life in handheld equipment.
Fast body diode recovery	t_rr < 48 ns and Q_rr = 12 nC reduce switching losses and voltage spikes in synchronous rectifier topologies.
Micro3™ package	SOT-23 footprint with standardized land pattern supports automated assembly and offers 200 °C/W thermal resistance on 1-in² FR4.
Lead-free & RoHS compliant	Meets JEDEC J-STD-020 moisture sensitivity level 1 (MSL1); suitable for reflow soldering without pre-bake.

Applications

USB Power Switching

LED Backlight Control

Use Scenario: Selective power gating of USB peripheral ports in laptops and docking stations.

IC Role / Device Role / Timing Role: Low-side switch controlling VBUS enable/disable with fast turn-on (<100 ns) and minimal voltage drop.

Use Value: Prevents back-powering of disabled ports and meets USB 2.0 inrush current limits via controlled dV/dt during turn-on.

Use Scenario: PWM dimming control of white LED strings in tablet displays.

IC Role / Device Role / Timing Role: High-frequency (1–2 MHz) current sink switch synchronizing with display frame rate.

Use Value: Delivers stable 0.93 A peak current with <200 mΩ on-resistance, minimizing heat generation near sensitive display components.

Portable Fan Driver

IoT Sensor Power Gating

Use Scenario: On/off control of 5 V cooling fans in battery-powered medical monitors.

IC Role / Device Role / Timing Role: Load switch activated by microcontroller GPIO with integrated overtemperature protection via junction sensing.

Use Value: Eliminates need for discrete gate resistor and pull-down; 1.5 V V_GS(th) guarantees activation even under brown-out conditions.

Use Scenario: Periodic wake-up and power cycling of environmental sensors in wireless sensor nodes.

IC Role / Device Role / Timing Role: Ultra-low-quiescent-current (I_GSS < 100 nA) switch isolating sensor supply between measurement cycles.

Use Value: Reduces system standby current to <1 µA per channel, extending 10-year battery life in LoRaWAN endpoints.

Equivalent & Alternatives

The following parts are listed as comparable options for similar N-channel logic-level MOSFET applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
DMN2004LK-7	R_DS(on) = 180 mΩ @ 4.5 V; higher Q_G (6.5 nC); same SOT-23 package.	Better conduction loss but slower switching; less suitable for >500 kHz PWM.	Prefer when efficiency at low frequency dominates over switching speed.
SI2302DS-T1-GE3	V_GS(th) = 1.0–2.0 V; R_DS(on) = 230 mΩ @ 4.5 V; slightly higher leakage (I_DSS = 1 µA).	Lower threshold improves margin with weak drivers but increases risk of partial turn-on in noisy environments.	Choose where ultra-low drive voltage is mandatory and noise immunity is managed externally.

Compared with DMN2004LK-7 and SI2302DS-T1-GE3, IRLML2402TRPBF delivers optimal balance of gate drive simplicity, thermal robustness in SOT-23, and body diode performance - making it preferred for space-constrained, battery-sensitive designs requiring predictable turn-on behavior.

Availability

IRLML2402TRPBF is available at Aetrix Electronics and suitable for USB power switching, LED backlight control, and portable fan driver applications requiring stable component supply and long-term industrial availability.

Supply support for IRLML2402TRPBF 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

Infineon Technologies is a German semiconductor manufacturer specializing in power management, automotive electronics, and industrial control ICs, with global manufacturing and quality certification to ISO/TS 16949 and IATF 16949.

This part belongs to Infineon's OptiMOS™ low-voltage logic-level MOSFET family, engineered specifically for energy-efficient, space-constrained DC-DC conversion and load switching in consumer and industrial portable systems.

FAQ

What is the maximum continuous drain current for IRLML2402TRPBF at 70°C ambient?

At T_A = 70 °C with standard PCB layout (1 in² copper), the maximum continuous I_D is derated to 0.75 A due to thermal limitations. This is calculated using R_θJA = 200 °C/W and T_J(max) = 150 °C, resulting in P_D = (150 − 70)/200 = 0.4 W, and I_D = √(P_D/R_DS(on)) ≈ √(0.4/0.2) = 1.4 A - but package current rating caps it at 0.75 A per datasheet absolute maximum ratings.

Can IRLML2402TRPBF be used in reverse polarity protection circuits?

No - IRLML2402TRPBF is an N-channel MOSFET intended for low-side switching only. For reverse polarity protection, a P-channel device like IRLML6344 or an N-channel high-side configuration with charge pump is required. Its body diode conducts from source to drain, making it unsuitable for series input protection without external circuitry.

Does this MOSFET require a gate resistor for 3.3 V MCU drive?

A gate resistor is not required for basic on/off operation with a 3.3 V MCU GPIO, as the device turns fully on with V_GS ≥ 2.5 V. However, a 10–100 Ω series resistor is recommended to dampen ringing during fast switching and limit peak gate current during PWM transitions above 100 kHz.

Is the Micro3™ package thermally enhanced compared to standard SOT-23?

No - Micro3™ is Infineon's trademarked name for JEDEC-standard SOT-23 (TO-236AB). It has identical thermal characteristics to generic SOT-23: R_θJA = 200 °C/W on 1 in² FR4 with no thermal pad. No internal thermal slug or exposed pad is present; thermal performance depends entirely on PCB copper area and layout.

IRLML2402TRPBF Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: HEXFET®

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

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

FET Type:: N-Channel

Technology:: MOSFET (Metal Oxide)

Drain to Source Voltage (Vdss):: 20 V

Current - Continuous Drain (Id) @ 25°C:: 1.2A (Ta)

Drive Voltage (Max Rds On, Min Rds On):: 2.7V, 4.5V

Rds On (Max) @ Id, Vgs:: 250mOhm @ 930mA, 4.5V

Vgs(th) (Max) @ Id:: 700mV @ 250µA (Min)

Gate Charge (Qg) (Max) @ Vgs:: 3.9 nC @ 4.5 V

Vgs (Max):: ±12V

Input Capacitance (Ciss) (Max) @ Vds:: 110 pF @ 15 V

FET Feature:: -

Power Dissipation (Max):: 540mW (Ta)

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: Micro3™/SOT-23

IRLML2402TRPBF FAQ

1.How can I place an order for IRLML2402TRPBF through Aetrix?

Please submit a Request for Quotation (RFQ) for IRLML2402TRPBF 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 IRLML2402TRPBF reliable?

The price and inventory of IRLML2402TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IRLML2402TRPBF is usually 5 days.

3.What payment methods are accepted for IRLML2402TRPBF?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IRLML2402TRPBF transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for IRLML2402TRPBF?

IRLML2402TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your IRLML2402TRPBF 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 IRLML2402TRPBF?

For technical support, including IRLML2402TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IRLML2402TRPBF requirements.

6.How does Aetrix verify that IRLML2402TRPBF is sourced from the original manufacturer or authorized distributors?

All IRLML2402TRPBF 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 IRLML2402TRPBF meets industry standards.

7.What is the process for return or replacement of IRLML2402TRPBF?

All IRLML2402TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with IRLML2402TRPBF, 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 IRLML2402TRPBF part is unused and in its original packaging.

Return procedure for IRLML2402TRPBF:

1.Submit a request within 90 days.

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

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