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 IRLIZ44NPBF

Name: IRLIZ44NPBF
Brand: Infineon Technologies
SKU: IRLIZ44NPBF
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: IRLIZ44NPBF

Manufacturer:: Infineon Technologies

Category:: FETs, MOSFETs

Package:: TO-220-3 Full Pack

Datasheet:: IRLIZ44NPBF.pdf

Description:: MOSFET N-CH 55V 30A TO220AB FP

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:2,407

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

Product details

Overview

IRLIZ44NPBF from Infineon Technologies (formerly International Rectifier) is a logic-level N-channel enhancement-mode Power MOSFET in TO-220 Full-Pak package, rated for 55 V V_DS, 30 A continuous drain current at 25°C, and 0.022 Ω R_DS(on) at V_GS = 10 V. It integrates a rugged body diode with 1.3 V forward voltage and 80–120 ns reverse recovery time, and is fully avalanche-rated for unclamped inductive switching in DC motor drives and power supplies.

For engineers reviewing the IRLIZ44NPBF datasheet, IRLIZ44NPBF pinout, IRLIZ44NPBF application, or IRLIZ44NPBF equivalent, key selection criteria include its isolated TO-220 Full-Pak thermal performance (R_θJC = 3.3 °C/W), logic-level gate drive compatibility (V_GS(th) = 1.0–2.0 V), and 210 mJ single-pulse avalanche energy - critical for high-reliability 24–48 V industrial power conversion and motor control designs.

Technical Context

This MOSFET employs fifth-generation HEXFET process technology to achieve low on-resistance per die area while maintaining fast switching (t_r = 84 ns, t_f = 15 ns) and robust safe operating area (SOA) up to 10 ms at 25 V. Its isolated TO-220 Full-Pak construction provides 2.5 kV_RMS voltage isolation and 4.8 mm creepage between sink and leads.

The device features a fully characterized body diode (V_SD = 1.3 V, Q_rr = 210–320 nC, t_rr = 80–120 ns) and is specified for operation from –55°C to +175°C junction temperature, with linear derating of 0.3 W/°C above 25°C case temperature.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	55 V - Maximum blocking voltage for 48 V nominal bus systems with 20% margin
R_DS(on) @ V_GS = 10 V	0.022 Ω - Enables <1.5 W conduction loss at 25 A, reducing heatsink requirements
I_D @ T_C = 25°C	30 A - Continuous current capability suitable for high-current DC-DC output stages
E_AS	210 mJ - Avalanche energy rating supports reliable operation under inductive load turn-off stress
R_θJC	3.3 °C/W - Low junction-to-case thermal resistance enables direct mounting to heatsinks without insulators
Q_g	48 nC - Gate charge optimized for efficient driving with standard 5 V logic-level controllers
t_r/t_f	84 ns / 15 ns - Fast switching minimizes transition losses in 100–500 kHz SMPS applications

Pinout & Package

IRLIZ44NPBF uses the TO-220 Full-Pak package: an electrically isolated variant of TO-220AB with molded-in insulation enabling direct heatsink mounting via single screw or clip. The tab is internally connected to the Drain terminal and rated for 2.5 kV_RMS isolation.

Pin/Terminal	Circuit Role	Design Meaning
G (Gate)	Control input	Logic-level compatible (1.0–2.0 V threshold); accepts 5 V microcontroller PWM directly
D (Drain)	High-side or low-side switch node	Internally connected to metal tab; must be electrically isolated from heatsink unless system ground referenced
S (Source)	Power return path / reference	Common connection point for gate driver return and load current sensing; defines local ground for gate drive loop

Key Features

Feature	Design Value
Isolated TO-220 Full-Pak	Eliminates need for mica washers or silicone pads - reduces assembly cost and thermal interface resistance
Fully avalanche-rated	Guarantees survivability under unclamped inductive switching (E_AS = 210 mJ), avoiding external snubbers
Logic-level gate drive	Operates fully enhanced at V_GS = 4.0 V (R_DS(on) ≤ 0.035 Ω), compatible with 3.3 V/5 V MCU outputs
Low Q_gd/Q_gs ratio	25 nC / 8.6 nC ≈ 2.9 - improves hard-switching immunity and reduces Miller-induced shoot-through risk
High dv/dt immunity	Rated for 5.0 V/ns peak diode recovery dv/dt - suppresses false turn-on during commutation

Applications

Motor Drive H-Bridge Leg

DC-DC Synchronous Rectifier

Use Scenario: Half-bridge leg in 24–48 V brushed DC motor controller with PWM frequency up to 20 kHz.

IC Role / Device Role / Timing Role: Low-side switching element handling bidirectional current and freewheeling through integrated body diode.

Use Value: 0.022 Ω R_DS(on) limits conduction loss to <1.4 W at 25 A, while 210 mJ E_AS ensures reliability during motor stall or reversal transients.

Use Scenario: Secondary-side synchronous rectifier in isolated 48 V input, 12 V output flyback or forward converter.

IC Role / Device Role / Timing Role: Replaces Schottky diode to reduce forward drop and improve efficiency at high load currents.

Use Value: 1.3 V V_SD and 210 nC Q_rr enable faster recovery than discrete diodes, cutting switching loss by >30% vs. 40 V Schottky at 15 A.

Industrial PLC Output Module

LED Driver High-Side Switch

Use Scenario: Solid-state relay replacement in programmable logic controller digital output card driving solenoids or contactors.

IC Role / Device Role / Timing Role: High-current, high-voltage switching element with built-in overtemperature and avalanche protection.

Use Value: 175°C max junction temperature and 0.3 W/°C derating allow sustained 22 A operation at 100°C case temperature - exceeding typical PLC ambient specs.

Use Scenario: Constant-current LED string switch in architectural lighting with 36–48 V bus and PWM dimming.

IC Role / Device Role / Timing Role: High-side current switch controlling LED current path with minimal voltage headroom loss.

Use Value: Logic-level gate enables direct drive from 5 V microcontroller; 55 V V_DS accommodates 12–15 LED strings (42–52.5 V forward) plus margin.

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
IRFZ44NPBF	Higher R_DS(on) (0.028 Ω), non-isolated TO-220AB, no avalanche rating	Requires external insulation and snubber for inductive loads; lower efficiency at high current	Lower-cost option where isolation and avalanche ruggedness are not required
STP55NF06L	60 V V_DS, 0.018 Ω R_DS(on), logic-level, but TO-220 non-isolated and 150°C max T_J	Limited to lower ambient temperatures; lacks certified avalanche energy spec	Better conduction efficiency in space-constrained 60 V systems, but requires thermal derating above 125°C

Compared with IRFZ44NPBF and STP55NF06L, IRLIZ44NPBF uniquely combines certified 2.5 kV_RMS isolation, 210 mJ avalanche rating, and 175°C junction rating - making it the only choice for safety-critical, high-temperature, and inductive-load industrial applications requiring zero external insulation.

Availability

IRLIZ44NPBF is available at Aetrix Electronics and suitable for industrial motor drives, PLC output modules, DC-DC synchronous rectifiers, and high-reliability LED drivers requiring stable component supply and long-term lifecycle support.

Supply support for IRLIZ44NPBF 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 deep expertise in silicon-based power devices.

This part belongs to Infineon's legacy HEXFET® Power MOSFET product line, designed specifically for high-efficiency, high-ruggedness switching in industrial power conversion, motor control, and solid-state relay applications.

FAQ

Is IRLIZ44NPBF RoHS-compliant and lead-free?

Yes, IRLIZ44NPBF is lead-free and RoHS-compliant per EU Directive 2011/65/EU. The "PbF" suffix explicitly denotes lead-free packaging. The molding compound and internal metallization meet all substance restrictions, including cadmium, hexavalent chromium, mercury, PBB, and PBDE limits.

Can IRLIZ44NPBF be used in surface-mount designs?

No - the TO-220 Full-Pak package is explicitly not recommended for surface-mount applications. Its mechanical structure, lead frame geometry, and thermal design require through-hole mounting and direct heatsink attachment using a screw or clip. Reflow soldering is not supported.

What is the maximum allowable gate-source voltage?

The absolute maximum V_GS is ±16 V. Exceeding this risks permanent gate oxide damage. For reliable operation, gate drive should be clamped to +12 V / –5 V using Zener diodes or dedicated gate drivers, especially in noisy industrial environments with voltage transients.

Does the body diode support continuous reverse conduction?

Yes - the integral body diode is rated for continuous source current (I_S) of 30 A at 25°C case temperature and pulsed source current (I_SM) of 160 A. Its V_SD = 1.3 V at 17 A and t_rr = 80–120 ns are fully characterized, enabling use in freewheeling and synchronous rectification without external diodes.

IRLIZ44NPBF Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: HEXFET®

Package/Case:: TO-220-3 Full Pack

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:: 30A (Tc)

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

Rds On (Max) @ Id, Vgs:: 22mOhm @ 17A, 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):: 45W (Tc)

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

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: TO-220AB Full-Pak

IRLIZ44NPBF FAQ

1.How can I place an order for IRLIZ44NPBF through Aetrix?

Please submit a Request for Quotation (RFQ) for IRLIZ44NPBF 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 IRLIZ44NPBF reliable?

The price and inventory of IRLIZ44NPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IRLIZ44NPBF is usually 5 days.

3.What payment methods are accepted for IRLIZ44NPBF?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IRLIZ44NPBF transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for IRLIZ44NPBF?

IRLIZ44NPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your IRLIZ44NPBF 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 IRLIZ44NPBF?

For technical support, including IRLIZ44NPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IRLIZ44NPBF requirements.

6.How does Aetrix verify that IRLIZ44NPBF is sourced from the original manufacturer or authorized distributors?

All IRLIZ44NPBF 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 IRLIZ44NPBF meets industry standards.

7.What is the process for return or replacement of IRLIZ44NPBF?

All IRLIZ44NPBF units undergo pre-shipment inspection (PSI). If there is an issue with IRLIZ44NPBF, 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 IRLIZ44NPBF part is unused and in its original packaging.

Return procedure for IRLIZ44NPBF:

1.Submit a request within 90 days.

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

Tech Hub

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.

2026-06-30 Amplifiers Explained: Types, Circuits, Gain, Classes and Applications

Amplifier guide covering voltage, current and power amplification, gain, feedback, amplifier classes, audio and RF applications, op-amp circuits, transimpedance amplifiers, datasheet selection and trou…