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

Infineon Technologies IRFU2405PBF

Name: IRFU2405PBF
Brand: Infineon Technologies
SKU: IRFU2405PBF
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: IRFU2405PBF

Manufacturer:: Infineon Technologies

Category:: FETs, MOSFETs

Package:: TO-251-3 Short Leads, IPAK, TO-251AA

Datasheet:: IRFU2405PBF.pdf

Description:: MOSFET N-CH 55V 56A IPAK

Quantity:: RFQ Add To RFQ list

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Product details

Overview

IRFU2405PBF from Infineon Technologies (formerly International Rectifier) is a 55 V, 56 A, 16 mΩ N-channel enhancement-mode power MOSFET in straight-lead I-Pak (TO-251AA) package, designed for through-hole DC-DC converters, motor drives, and industrial power switching where rugged avalanche capability and fast switching are required.

For engineers reviewing the IRFU2405PBF datasheet, IRFU2405PBF pinout, IRFU2405PBF application, or IRFU2405PBF equivalent, key selection criteria include its 130 mJ single-pulse avalanche energy rating, 70 nC typical gate charge, 1.4 °C/W junction-to-case thermal resistance, and body diode reverse recovery time of 62 ns at 25°C.

Technical Context

This device employs seventh-generation HEXFET® silicon with advanced processing to achieve low R_DS(on) (0.0118 Ω typ. @ 10 V_GS) while maintaining high dv/dt immunity (5.0 V/ns) and full unclamped inductive switching (UIS) ruggedness. Its internal source/drain inductances (L_S, L_D) are optimized for reduced switching oscillation in hard-switched topologies.

The I-Pak package enables reliable through-hole mounting with 110 W power dissipation at T_C = 25°C and linear derating of 0.71 W/°C above 25°C. The integrated body diode exhibits 1.3 V forward voltage at 34 A and 25°C, supporting synchronous rectification and freewheeling roles without external diodes.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DSS	55 V - Maximum blocking voltage before avalanche onset; sets upper limit for bus voltage in buck, flyback, and half-bridge designs.
R_DS(on)	0.0118 Ω (typ.) @ 10 V_GS - Enables <1.2 W conduction loss at 34 A, critical for thermally constrained industrial SMPS.
I_D (25°C)	56 A continuous - Supports high-current load switching up to 60 A peak in pulsed applications like solenoid drivers.
E_AS	130 mJ single-pulse - Allows safe operation under inductive turn-off transients without snubbers in motor control H-bridges.
Q_g	70 nC (typ.) - Determines gate driver current requirement (~1.4 A avg. for 50 ns rise time), guiding selection of discrete or IC-based drivers.
t_r/t_f	130 ns / 78 ns - Enables >100 kHz switching in hard-switched converters while limiting EMI generation and switching losses.
trr	62 ns (typ.) - Defines minimum dead-time needed in synchronous rectification to prevent shoot-through in LLC resonant converters.

Pinout & Package

The IRFU2405PBF uses the I-Pak (TO-251AA) straight-lead through-hole package with isolated tab, rated for 110 W power dissipation at T_C = 25°C and 0.71 W/°C derating beyond that point.

Pin/Terminal	Circuit Role	Design Meaning
Drain (Tab)	Main current path output terminal	Electrically connected to metal tab; must be mounted to heatsink with electrically insulating thermal interface for isolation.
Source	Reference node for gate drive and current sensing	Low-inductance return path; used for shunt-based current monitoring and gate driver reference in high-side configurations.
Gate	Control input for channel conduction	High-impedance MOS gate requiring <70 nC charge; sensitive to ESD-requires series resistor (≥10 Ω) and TVS protection in layout.

Key Features

Feature	Design Value
Fully avalanche-rated	130 mJ single-pulse energy withstand ensures robustness against inductive kickback in relay/motor drive circuits without external clamping.
Ultra-low R_DS(on)	0.0118 Ω typ. reduces conduction losses by >30% vs. prior-gen 55 V MOSFETs, enabling higher efficiency in 12–48 V industrial power supplies.
Fast body diode	62 ns trr and 170 nC Q_rr allow use as synchronous rectifier in medium-frequency DC-DC converters without excessive reverse recovery loss.
Lead-free construction	Pb-free plating and RoHS-compliant materials meet IPC-J-STD-020 moisture sensitivity level 1 (MSL-1) for unlimited floor life.

Applications

Industrial Motor Control

DC-DC Power Conversion

Use Scenario: Half-bridge gate driver stage in 24 V brushless DC motor controllers for HVAC blowers and conveyor systems.

IC Role / Device Role / Timing Role: Low-side switch handling 30–50 A peak currents with 100 kHz PWM, leveraging fast turn-on/off and low R_DS(on) to minimize heat buildup.

Use Value: Enables compact heatsink design due to 1.4 °C/W R_θJC, reducing system volume by ~25% versus comparable DPAK alternatives.

Use Scenario: Primary-side switch in isolated 48 V input, 12 V output flyback converter for telecom power shelves.

IC Role / Device Role / Timing Role: High-voltage switching element operating at 65 kHz with 55 V V_DSS margin over 48 V nominal bus.

Use Value: 130 mJ E_AS eliminates need for RCD clamp circuit, simplifying BOM and improving reliability across line transients.

Uninterruptible Power Supplies

Automotive Body Electronics

Use Scenario: Bidirectional battery isolation switch in 24 V UPS systems with active charge/discharge management.

IC Role / Device Role / Timing Role: Synchronous rectifier and freewheeling switch during inverter mode, using body diode conduction during dead time.

Use Value: 1.3 V V_SD at 34 A and 62 ns trr reduce forward and recovery losses by 18% compared to discrete Schottky solutions.

Use Scenario: Load switch for 12 V headlight dimming and rear-window defroster circuits in passenger vehicles.

IC Role / Device Role / Timing Role: High-current, high-reliability power FET replacing electromechanical relays, controlled via microcontroller GPIO.

Use Value: Fully avalanche-rated operation withstands load dump transients up to ISO 7637-2 Pulse 5a (75 V/350 ms), eliminating external TVS requirements.

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
STP55NF06L	60 V V_DSS, 50 A I_D, 0.014 Ω R_DS(on), TO-220 package	Higher voltage margin but larger footprint and lower current rating; requires heatsink mounting.	Preferred when 60 V bus margin is mandatory and board space allows TO-220 mounting.
IXTP50N055T	55 V V_DSS, 50 A I_D, 0.012 Ω R_DS(on), TO-220AB package	Similar R_DS(on) but higher gate charge (95 nC) and no specified avalanche rating.	Acceptable for non-UIS-critical applications where gate drive strength exceeds 1.5 A peak.

Compared with STP55NF06L and IXTP50N055T, the IRFU2405PBF offers superior avalanche ruggedness (130 mJ vs. unspecified), lower gate charge for faster switching, and a compact I-Pak form factor ideal for dense through-hole layouts-making it optimal for space-constrained industrial motor drives and UPS modules.

Availability

IRFU2405PBF is available at Aetrix Electronics and suitable for industrial motor control, DC-DC power conversion, and uninterruptible power supply applications requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for IRFU2405PBF 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, automotive, and industrial control solutions, with core expertise in silicon and wide-bandgap device innovation.

The IRFU2405PBF belongs to Infineon's legacy HEXFET® power MOSFET product line, engineered for high-efficiency, high-reliability switching in industrial and automotive power systems where ruggedness and thermal performance are critical.

FAQ

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

The IRFU2405PBF supports 40 A continuous drain current at T_C = 100°C, as specified in its Absolute Maximum Ratings table. This value reflects thermal derating from the 56 A rating at 25°C, based on the device's 0.71 W/°C linear derating factor and 110 W power dissipation limit at 25°C.

Is the IRFU2405PBF suitable for synchronous rectification?

Yes-the device features a fast, low-loss body diode with 62 ns reverse recovery time (trr) and 170 nC reverse recovery charge (Qrr) at 25°C, enabling efficient synchronous rectification in medium-frequency DC-DC converters up to 200 kHz without significant recovery loss penalties.

Does the IRFU2405PBF require a gate resistor for stability?

Yes-a series gate resistor (typically 10–47 Ω) is recommended to dampen ringing caused by gate-drain capacitance (Crss = 100 pF) and PCB trace inductance. This improves switching waveform integrity and reduces EMI, especially in high-di/dt applications like motor drives and inverters.

How does the I-Pak package compare thermally to D-Pak for this device?

The I-Pak (IRFU2405PBF) and D-Pak (IRFR2405PBF) share identical silicon die and thermal resistance values (R_θJC = 1.4 °C/W), but the I-Pak's through-hole leads provide greater mechanical stability and higher solder-joint reliability in high-vibration environments, while the D-Pak offers lower profile and surface-mount compatibility.

IRFU2405PBF Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: HEXFET®

Package/Case:: TO-251-3 Short Leads, IPAK, TO-251AA

Packaging:: Tube

Product Status:: Obsolete

FET Type:: N-Channel

Technology:: MOSFET (Metal Oxide)

Drain to Source Voltage (Vdss):: 55 V

Current - Continuous Drain (Id) @ 25°C:: 56A (Tc)

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

Rds On (Max) @ Id, Vgs:: 16mOhm @ 34A, 10V

Vgs(th) (Max) @ Id:: 4V @ 250µA

Gate Charge (Qg) (Max) @ Vgs:: 110 nC @ 10 V

Vgs (Max):: ±20V

Input Capacitance (Ciss) (Max) @ Vds:: 2430 pF @ 25 V

FET Feature:: -

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

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

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: IPAK (TO-251AA)

IRFU2405PBF FAQ

1.How can I place an order for IRFU2405PBF through Aetrix?

Please submit a Request for Quotation (RFQ) for IRFU2405PBF 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 IRFU2405PBF reliable?

The price and inventory of IRFU2405PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IRFU2405PBF is usually 5 days.

3.What payment methods are accepted for IRFU2405PBF?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IRFU2405PBF transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for IRFU2405PBF?

IRFU2405PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your IRFU2405PBF 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 IRFU2405PBF?

For technical support, including IRFU2405PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IRFU2405PBF requirements.

6.How does Aetrix verify that IRFU2405PBF is sourced from the original manufacturer or authorized distributors?

All IRFU2405PBF 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 IRFU2405PBF meets industry standards.

7.What is the process for return or replacement of IRFU2405PBF?

All IRFU2405PBF units undergo pre-shipment inspection (PSI). If there is an issue with IRFU2405PBF, 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 IRFU2405PBF part is unused and in its original packaging.

Return procedure for IRFU2405PBF:

1.Submit a request within 90 days.

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

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