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

Infineon Technologies IRLML2803TRPBF

Name: IRLML2803TRPBF
Brand: Infineon Technologies
SKU: IRLML2803TRPBF
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: IRLML2803TRPBF

Manufacturer:: Infineon Technologies

Category:: FETs, MOSFETs

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

Datasheet:: IRLML2803TRPBF.pdf

Description:: MOSFET N-CH 30V 1.2A SOT23

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Product details

Overview

IRLML2803TRPBF from Infineon Technologies is a 30 V, 3.9 A N-channel enhancement-mode MOSFET in Micro3™ (SOT-23) package, optimized for low-voltage switching in portable power management and load switching applications. It features 45 mΩ R_DS(on) at V_GS = 10 V, ±20 V gate voltage rating, and 1.2 mJ single-pulse avalanche energy - enabling robust operation in battery-powered DC-DC converters and USB power switches.

For engineers reviewing the IRLML2803TRPBF datasheet, IRLML2803TRPBF pinout, IRLML2803TRPBF application, or IRLML2803TRPBF equivalent, key selection criteria include its 45 mΩ on-resistance at 4.5 V gate drive, 230 °C/W junction-to-ambient thermal resistance, SOT-23 footprint compatibility, and verified performance under 0.91 A continuous drain current at 70 °C ambient.

Technical Context

This logic-level MOSFET uses planar HEXFET® technology with optimized channel geometry to achieve low R_DS(on) while maintaining fast switching (t_d(on) = 10 ns, t_f = 11 ns) and low gate charge (Q_G = 4.3 nC). Its body diode exhibits 1.4 V forward drop at 0.91 A and supports unclamped inductive switching up to 0.9 A.

The device operates within -55 °C to +150 °C junction temperature range and is characterized for stable performance at V_GS as low as 3.0 V - making it suitable for direct interfacing with 3.3 V microcontrollers without level-shifting circuitry.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	30 V - Maximum drain-source blocking voltage compatible with 24 V rail systems and automotive 12 V battery inputs.
R_DS(on) @ V_GS = 4.5 V	65 mΩ - Enables ≥92% efficiency in 3.3 V–5 V logic-driven load switches at ≤1 A load current.
I_D Continuous @ T_A = 70 °C	3.0 A - Sustains 3 A load current in standard PCB layouts without forced air cooling.
Q_G	4.3 nC - Reduces gate driver power loss and enables <100 kHz PWM operation with minimal drive strength.
E_AS	1.2 mJ - Supports reliable operation in inductive load switching (e.g., solenoids, relays) without external snubbers.
R_θJA	230 °C/W - Defines thermal derating limit: max 3.0 A continuous current requires ≤70 °C ambient or enhanced copper pour.

Pinout & Package

IRLML2803TRPBF is housed in Micro3™ package (JEDEC TO-236AB / SOT-23), a surface-mount plastic case with 3 leads and 1.9 mm × 1.3 mm footprint. The package supports reflow soldering per J-STD-020 and has 0.95 mm lead pitch.

Pin/Terminal	Circuit Role	Design Meaning
1 (Gate)	Control input	Accepts 0–10 V logic-level signals; threshold voltage V_GS(th) = 1.0–2.4 V ensures turn-on with 3.3 V MCU outputs.
2 (Source)	Reference node	Connected to system ground or low-side return path; forms common reference for gate drive and current sensing.
3 (Drain)	Power output	Switches load current to V_IN; rated for 30 V blocking and 3.9 A pulsed current (IDM).

Key Features

Feature	Design Value
Logic-level gate drive	Guaranteed turn-on at V_GS = 4.5 V - eliminates need for gate driver ICs in 3.3 V/5 V systems.
Low R_DS(on) at 4.5 V	65 mΩ - minimizes conduction loss in battery-powered devices where every milliwatt affects runtime.
Fast switching speed	t_rd = 10 ns, t_f = 11 ns - reduces transition losses in high-frequency DC-DC control loops.
Robust avalanche capability	E_AS = 1.2 mJ - withstands inductive kickback in relay/solenoid drivers without external protection.
Halogen-free & RoHS-compliant	Meets IPC-1752A material declaration requirements for industrial and medical end equipment.

Applications

USB Power Switching

Portable DC-DC Converter Control

Use Scenario: Enabling/disabling VBUS power in USB 2.0 host ports with overcurrent protection.

IC Role / Device Role / Timing Role: Low-side load switch controlling 5 V supply path with fast turn-off (<50 ns) to meet USB suspend timing.

Use Value: 65 mΩ R_DS(on) limits voltage drop to <65 mV at 1 A, preserving bus compliance while supporting hot-plug detection.

Use Scenario: Synchronous rectification in buck converter secondary side for wearables and IoT sensors.

IC Role / Device Role / Timing Role: High-efficiency freewheeling switch replacing Schottky diode; driven by controller's complementary output.

Use Value: 1.4 V body diode forward drop and low Q_G reduce conduction and switching losses versus discrete diode solutions.

Smartphone Battery Protection

Industrial Sensor Node Load Switching

Use Scenario: Isolating backup battery from main PMIC during fault conditions or deep sleep mode.

IC Role / Device Role / Timing Role: Reverse-current blocking switch placed between battery cathode and system ground.

Use Value: Integrated body diode blocks reverse current flow; 30 V rating accommodates Li-ion stack voltages up to 12.6 V.

Use Scenario: Power gating of wireless transceivers (BLE, LoRa) in remote environmental monitoring nodes.

IC Role / Device Role / Timing Role: Controlled power rail enable switch activated by microcontroller GPIO with minimal leakage.

Use Value: 1 μA max I_DSS at 25 °C ensures <1 μW standby loss - critical for multi-year battery life in field-deployed sensors.

Equivalent & Alternatives

The following parts are listed as comparable options for similar N-channel low-voltage power switching applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
DMN2004LK-7	R_DS(on) = 48 mΩ @ 4.5 V; higher Q_G = 5.8 nC; same SOT-23 package.	Better conduction loss but slower switching - preferred in static load switching over high-frequency PWM.	Select when lowest on-resistance at 4.5 V is prioritized over gate drive simplicity.
SI2302DS-T1-GE3	R_DS(on) = 75 mΩ @ 4.5 V; lower E_AS = 0.4 mJ; same pinout and footprint.	Reduced avalanche margin - unsuitable for inductive loads without external clamping.	Choose only for purely resistive or capacitive loads where cost sensitivity outweighs ruggedness needs.

Compared with DMN2004LK-7 and SI2302DS-T1-GE3, IRLML2803TRPBF delivers balanced trade-offs: mid-range R_DS(on), proven avalanche robustness, and minimal gate drive demand - making it optimal for general-purpose logic-level switching where reliability and design simplicity are co-prioritized.

Availability

IRLML2803TRPBF is available at Aetrix Electronics and suitable for USB power delivery, portable DC-DC converters, and industrial sensor node load switching requiring stable component supply across production lifecycles.

Supply support for IRLML2803TRPBF 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 IECQ QC 080000.

This MOSFET belongs to Infineon's HEXFET® logic-level power transistor product line, engineered specifically for efficient, compact, and reliable low-voltage switching in space-constrained portable and battery-operated systems.

FAQ

What is the maximum continuous drain current at 25°C ambient?

The IRLML2803TRPBF supports 3.9 A continuous drain current at T_A = 25°C with V_GS = 10 V, limited by package thermal resistance (R_θJA = 230 °C/W) and silicon safe operating area. At elevated ambient temperatures, derating applies: 3.0 A maximum at 70°C ambient per datasheet absolute ratings table.

Can this MOSFET be driven directly by a 3.3 V microcontroller GPIO?

Yes - the device has guaranteed turn-on at V_GS = 3.0 V and typical threshold voltage of 1.4 V. With 3.3 V drive, R_DS(on) is approximately 85 mΩ, sufficient for ≤500 mA loads. For full 3.9 A capability, 4.5 V or higher gate voltage is required per the R_DS(on) vs. V_GS curve on page 7 of the datasheet.

Does IRLML2803TRPBF have integrated ESD protection?

No - the device does not include on-chip ESD protection diodes. Per datasheet Figure 1 and Absolute Maximum Ratings, gate-source voltage must remain within ±20 V. External 10 kΩ series resistor and/or TVS diode is recommended for handling >2 kV HBM ESD events in board-level designs.

Is the Micro3™ package compatible with standard SOT-23 pick-and-place equipment?

Yes - the Micro3™ (SOT-23) package conforms to JEDEC TO-236AB outline and matches standard SOT-23 land patterns. Footprint dimensions (1.9 mm × 1.3 mm, 0.95 mm pitch) align with IPC-7351B "SOIC_N" generic SOT-23 template, ensuring compatibility with automated assembly systems using 0.5 mm nozzle and vision-guided placement.

IRLML2803TRPBF 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:: Active

FET Type:: N-Channel

Technology:: MOSFET (Metal Oxide)

Drain to Source Voltage (Vdss):: 30 V

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

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

Rds On (Max) @ Id, Vgs:: 250mOhm @ 910mA, 10V

Vgs(th) (Max) @ Id:: 1V @ 250µA

Gate Charge (Qg) (Max) @ Vgs:: 5 nC @ 10 V

Vgs (Max):: ±20V

Input Capacitance (Ciss) (Max) @ Vds:: 85 pF @ 25 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

IRLML2803TRPBF FAQ

1.How can I place an order for IRLML2803TRPBF through Aetrix?

Please submit a Request for Quotation (RFQ) for IRLML2803TRPBF 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 IRLML2803TRPBF reliable?

The price and inventory of IRLML2803TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IRLML2803TRPBF is usually 5 days.

3.What payment methods are accepted for IRLML2803TRPBF?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IRLML2803TRPBF transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for IRLML2803TRPBF?

IRLML2803TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your IRLML2803TRPBF 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 IRLML2803TRPBF?

For technical support, including IRLML2803TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IRLML2803TRPBF requirements.

6.How does Aetrix verify that IRLML2803TRPBF is sourced from the original manufacturer or authorized distributors?

All IRLML2803TRPBF 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 IRLML2803TRPBF meets industry standards.

7.What is the process for return or replacement of IRLML2803TRPBF?

All IRLML2803TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with IRLML2803TRPBF, 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 IRLML2803TRPBF part is unused and in its original packaging.

Return procedure for IRLML2803TRPBF:

1.Submit a request within 90 days.

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

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