Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

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

Infineon Technologies IRLR2905TRL

Name: IRLR2905TRL
Brand: Infineon Technologies
SKU: IRLR2905TRL
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: IRLR2905TRL

Manufacturer:: Infineon Technologies

Category:: FETs, MOSFETs

Package:: TO-252-3, DPAK (2 Leads + Tab), SC-63

Datasheet:: IRLR2905TRL.pdf

Description:: MOSFET N-CH 55V 42A DPAK

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:7,686

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

IRLR2905TRL from Infineon Technologies (formerly International Rectifier) is a logic-level N-channel enhancement-mode Power MOSFET in TO-252AA (D-Pak) surface-mount package, rated for 55 V V_DS, 42 A continuous drain current at T_C = 25°C, and 0.027 Ω R_DS(on) at V_GS = 10 V. It features ultra-low on-resistance, fast switching, full avalanche rating, and is optimized for DC-DC converters, motor drives, and load-switching applications requiring efficient high-current control.

For engineers reviewing the IRLR2905TRL datasheet, IRLR2905TRL pinout, IRLR2905TRL application, or IRLR2905TRL equivalent, key selection criteria include gate threshold voltage (1.0–2.0 V), junction-to-case thermal resistance (1.4 °C/W), body diode reverse recovery time (80–120 ns), and logic-level compatibility with 5 V microcontroller outputs.

Technical Context

This fifth-generation HEXFET device uses advanced planar processing to minimize R_DS(on) per die area while maintaining rugged unclamped inductive switching capability. Its gate charge profile (Q_g = 48 nC, Q_gd = 25 nC) supports high-frequency PWM operation up to several hundred kHz in synchronous buck topologies.

The integrated body diode exhibits V_SD = 1.3 V at I_S = 25 A and T_J = 25°C, with trr = 80–120 ns under di/dt = 100 A/µs - critical for minimizing shoot-through losses and EMI in half-bridge configurations.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	55 V - Maximum blocking voltage before avalanche onset; sets upper limit for input rail in buck converters and motor drive H-bridges.
R_DS(on) @ V_GS = 10 V	0.027 Ω - Conduction loss of 28.4 W at 33 A (I²R), enabling >95% efficiency in 12 V/30 A power stages.
I_D Continuous @ T_C = 25°C	42 A - Sustained current capability when mounted on 1"² FR-4 PCB; derates linearly above 25°C case temperature.
Q_g	48 nC - Total gate charge determines driver strength requirement; ~1.2 A peak needed for 40 ns turn-on with 5 V gate swing.
E_AS	210 mJ - Single-pulse avalanche energy rating confirms robustness against inductive switching transients without external snubbers.
trr / Q_rr	80–120 ns / 210–320 nC - Body diode recovery behavior directly impacts cross-conduction loss and EMI in synchronous rectification.
R_θJC	1.4 °C/W - Junction-to-case thermal resistance enables direct heatsinking via PCB copper pour or clip-mount solutions.

Pinout & Package

IRLR2905TRL is housed in a TO-252AA (D-Pak) surface-mount package with exposed drain pad for thermal and electrical performance. The package measures 6.73 × 6.35 mm with 1.02 mm height and is compatible with vapor-phase, infrared, and wave soldering processes.

Pin/Terminal	Circuit Role	Design Meaning
1 - Gate	Control electrode	Logic-level compatible (V_GS(th) = 1.0–2.0 V); requires <100 nA leakage current handling in high-impedance bias networks.
2 - Drain	High-side power terminal	Internally connected to exposed metal tab; must be routed to high-current paths and thermally coupled to PCB copper pour or heatsink.
3 - Source	Reference node / return path	Provides low-inductance return for gate drive loop; internal source inductance LS = 7.5 nH affects switching waveform fidelity.
4 - Drain (Tab)	Primary power & thermal interface	Electrically identical to Pin 2; serves as main thermal conduction path (R_θJC = 1.4 °C/W) and current-carrying node.

Key Features

Feature	Design Value
Logic-level gate drive	Operates fully enhanced at V_GS = 4.0 V (R_DS(on) = 0.040 Ω), enabling direct interfacing with 3.3 V/5 V MCUs without level-shifting.
Ultra-low R_DS(on)	0.027 Ω at 10 V reduces conduction loss by >40% vs. legacy D-Pak MOSFETs, improving thermal margin in compact power modules.
Fully avalanche-rated	Guaranteed 210 mJ single-pulse avalanche energy allows reliable operation in inductive load switching without external protection circuits.
Fast body diode recovery	trr = 80–120 ns and Q_rr = 210–320 nC minimize reverse recovery losses in synchronous rectifiers and bidirectional converters.
Surface-mount optimized	TO-252AA footprint supports automated assembly and delivers 110 W power dissipation on 1"² FR-4 PCB - exceeding through-hole alternatives.

Applications

DC-DC Buck Converter

Brushed DC Motor Driver

Use Scenario: 12 V input to 3.3 V/20 A output in telecom power supply with 500 kHz switching frequency.

IC Role / Device Role / Timing Role: High-side synchronous rectifier switch; handles 20 A average current with <100 ns dead-time control.

Use Value: 0.027 Ω R_DS(on) limits conduction loss to ≤10.8 W, enabling natural convection cooling without heatsink.

Use Scenario: H-bridge driver for 24 V, 15 A brushed motor in industrial actuator with PWM speed control.

IC Role / Device Role / Timing Role: Low-side switching element; commutates motor current during direction reversal with body diode freewheeling.

Use Value: 210 mJ E_AS rating withstands inductive kickback during rapid PWM transitions without failure.

Hot-Swap Load Switch

LED Constant-Current Driver

Use Scenario: Inrush-limited 48 V power distribution module protecting backplane from capacitive loading surges.

IC Role / Device Role / Timing Role: Main pass transistor controlled by dedicated hot-swap controller; operates in linear region during soft-start.

Use Value: 1.4 °C/W R_θJC and 110 W PD rating allow safe linear-mode operation for 50 ms at 10 A/10 V drop.

Use Scenario: 36 V constant-current driver for 10-series white LED string (350 mA, 32 V forward).

IC Role / Device Role / Timing Role: PWM-controlled current sink; modulates LED brightness at 1–20 kHz with minimal thermal rise.

Use Value: 5 V logic-compatible gate ensures clean 3.3 V MCU PWM edge triggering, reducing gate drive component count.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
IRLZ44N	R_DS(on) = 0.028 Ω, TO-220 package, higher R_θJA (62 °C/W), no official avalanche rating	Requires heatsink for >15 A continuous; unsuitable for space-constrained SMT designs	Prefer IRLR2905TRL where board area, thermal performance, or unclamped inductive robustness are critical.
STP55NF06L	R_DS(on) = 0.014 Ω, TO-220, V_DS = 60 V, Q_g = 65 nC, avalanche rated	Lower R_DS(on) but higher gate charge increases driver loss; incompatible SMT footprint	Choose STP55NF06L only if lower conduction loss outweighs layout redesign cost and thermal management complexity.

Compared with IRLZ44N and STP55NF06L, IRLR2905TRL uniquely balances SMT manufacturability, 1.4 °C/W thermal resistance, and guaranteed avalanche ruggedness - making it optimal for high-reliability, high-density power stages where gate drive simplicity and transient immunity are prioritized over marginal R_DS(on) reduction.

Availability

IRLR2905TRL is available at Aetrix Electronics and suitable for DC-DC converters, motor drivers, hot-swap controllers, and LED drivers requiring stable component supply across automotive, industrial, and communications equipment programs.

Supply support for IRLR2905TRL 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 global semiconductor leader specializing in power management, sensor, and automotive ICs, with deep expertise in silicon-based power devices and wide-bandgap technologies.

The IRLR/U series belongs to Infineon's logic-level HEXFET Power MOSFET product line, engineered specifically for high-efficiency, high-current switching in space-constrained surface-mount applications where gate drive simplicity and thermal performance are essential.

FAQ

What is the maximum continuous drain current for IRLR2905TRL at 100°C case temperature?

The maximum continuous drain current is 30 A at T_C = 100°C with V_GS = 10 V, as specified in the Absolute Maximum Ratings table. This reflects thermal derating due to reduced channel conductivity and increased R_DS(on) at elevated temperatures - not package current limitation, which is 20 A under certain conditions.

Does IRLR2905TRL require a gate resistor for stability in switching applications?

Yes - a gate resistor (typically 3.4–10 Ω) is recommended to dampen ringing caused by gate-drain capacitance (C_rss = 150 pF) and parasitic inductance. The datasheet specifies switching times using RG = 3.4 Ω; omitting it risks overshoot, shoot-through, and EMI compliance failure in high-speed PWM circuits.

Can IRLR2905TRL be used in linear (analog) mode for hot-swap or inrush limiting?

Yes - its 110 W power dissipation rating at T_C = 25°C and 1.4 °C/W junction-to-case thermal resistance support short-duration linear operation. For 50 ms inrush limiting at 10 A and 10 V drop, junction temperature rise remains within safe limits (<100°C) when properly heatsunk to PCB copper.

How does the body diode performance compare to discrete Schottky diodes in synchronous rectification?

The body diode has V_SD = 1.3 V at 25 A and trr = 80–120 ns - higher forward drop and slower recovery than typical 45 V Schottky diodes (0.5 V, <10 ns). It is suitable for low-frequency freewheeling but introduces measurable conduction and switching loss versus optimized external diodes in >100 kHz designs.

IRLR2905TRL Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: HEXFET®

Package/Case:: TO-252-3, DPAK (2 Leads + Tab), SC-63

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

FET Type:: N-Channel

Technology:: MOSFET (Metal Oxide)

Drain to Source Voltage (Vdss):: 55 V

Current - Continuous Drain (Id) @ 25°C:: 42A (Tc)

Drive Voltage (Max Rds On, Min Rds On):: 4V, 10V

Rds On (Max) @ Id, Vgs:: 27mOhm @ 25A, 10V

Vgs(th) (Max) @ Id:: 2V @ 250µA

Gate Charge (Qg) (Max) @ Vgs:: 48 nC @ 5 V

Vgs (Max):: ±16V

Input Capacitance (Ciss) (Max) @ Vds:: 1700 pF @ 25 V

FET Feature:: -

Power Dissipation (Max):: 110W (Tc)

Operating Temperature:: -55°C ~ 175°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: TO-252AA (DPAK)

IRLR2905TRL FAQ

1.How can I place an order for IRLR2905TRL through Aetrix?

Please submit a Request for Quotation (RFQ) for IRLR2905TRL 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 IRLR2905TRL reliable?

The price and inventory of IRLR2905TRL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IRLR2905TRL is usually 5 days.

3.What payment methods are accepted for IRLR2905TRL?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IRLR2905TRL transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for IRLR2905TRL?

IRLR2905TRL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your IRLR2905TRL 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 IRLR2905TRL?

For technical support, including IRLR2905TRL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IRLR2905TRL requirements.

6.How does Aetrix verify that IRLR2905TRL is sourced from the original manufacturer or authorized distributors?

All IRLR2905TRL 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 IRLR2905TRL meets industry standards.

7.What is the process for return or replacement of IRLR2905TRL?

All IRLR2905TRL units undergo pre-shipment inspection (PSI). If there is an issue with IRLR2905TRL, 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 IRLR2905TRL part is unused and in its original packaging.

Return procedure for IRLR2905TRL:

1.Submit a request within 90 days.

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

Tech Hub

2026-08-03 Electronic Component Obsolescence: EOL Risks, Replacement Options and Last-Time Buy Strategy

Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.

2026-07-29 18650 Battery: Voltage, Capacity, Charging and Pack Design

18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…

2026-07-27 Hall Effect Sensor: Working Principle, Types, Circuits and Applications

Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…

2026-07-20 Product Change Notification (PCN) in Electronic Components: Meaning and Supply Chain Response

Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…

2026-07-19 Blend Door Actuator: Symptoms, Location, Reset and Replacement Guide

A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…

2026-07-17 Raspberry Pi Alternatives: Chip-Level Comparison, Compatibility and Replacement Guide

Engineering guide to Raspberry Pi alternatives, covering chip-level differences, Orange Pi, ROCK, Jetson, Banana Pi, NanoPi, Compute Module, Pico, GPIO, camera, HAT compatibility, and replacement risks…

2026-07-13 How to Test Dynamic Load Response in Low-Voltage High-Current Buck Converters

Engineering guide to dynamic load response testing for high-current buck converters, covering load step setup, slew rate, Vcore undershoot, overshoot, recovery time, probe location, output capacitors a…

2026-07-08 Output Capacitor Selection for High-Current ASIC Vcore Rails

Engineering guide to output capacitor selection for ASIC Vcore rails, covering bulk capacitors, polymer capacitors, MLCC decoupling, DC bias, ESR, ESL, placement, transient response and substitution ri…

2026-07-07 High-Current ASIC Core Power Supply Design: 12-Phase Buck, PMBus and Dynamic Load Response

Engineering guide to high-current ASIC Vcore rails, covering 12-phase buck architecture, PMBus control, dynamic load testing, output capacitor networks, smart power stage selection, thermal design and …

2026-07-06 Voltage Regulator: Types, Circuits, Testing and Selection Guide

Voltage regulator guide covering linear, LDO, 7805, Zener, adjustable, buck, VRM and alternator regulators, with design checks, testing methods, troubleshooting and datasheet-based selection.