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

Infineon Technologies IRFZ44ESTRLPBF

Name: IRFZ44ESTRLPBF
Brand: Infineon Technologies
SKU: IRFZ44ESTRLPBF
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: IRFZ44ESTRLPBF

Manufacturer:: Infineon Technologies

Category:: FETs, MOSFETs

Package:: TO-263-3, D2PAK (2 Leads + Tab), TO-263AB

Datasheet:: IRFZ44ESTRLPBF.pdf

Description:: MOSFET N-CH 60V 48A D2PAK

Quantity:: RFQ Add To RFQ list

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Product details

Overview

IRFZ44ESTRLPBF from Infineon Technologies (formerly International Rectifier) is a 60V, 48A, 0.023Ω N-channel surface-mount HEXFET® Power MOSFET in D2PAK (TO-263) package, rated for continuous operation at 110W with 1.4°C/W junction-to-case thermal resistance, and fully avalanche-rated for robust switching in DC-DC converters and motor drives.

For engineers reviewing the IRFZ44ESTRLPBF datasheet, IRFZ44ESTRLPBF pinout, IRFZ44ESTRLPBF application, or IRFZ44ESTRLPBF equivalent, key selection criteria include R_DS(on) at 10V gate drive, pulsed drain current capability (192A), body diode recovery performance (trr = 69–104 ns), and thermal derating behavior under high ambient conditions.

Technical Context

This MOSFET employs fifth-generation HEXFET process technology to achieve low on-resistance per die area while maintaining fast switching (td(on) = 12 ns, tr = 60 ns) and rugged avalanche tolerance (EAS = 220 mJ). Its gate charge profile (Qg = 60 nC, Qgd = 23 nC) supports efficient PWM control in hard-switched topologies.

The integrated body diode exhibits V_SD = 1.3 V at 29 A and controlled reverse recovery (Q_rr = 177–266 nC), enabling reliable freewheeling in synchronous rectification and H-bridge motor control without external snubbing in moderate-frequency (<100 kHz) applications.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DSS	60 V - Maximum blocking voltage before avalanche onset; sets upper limit for bus voltage in buck converters and half-bridge inverters.
R_DS(on)	0.023 Ω @ V_GS = 10 V, I_D = 29 A - Determines conduction loss (P_cond ≈ I² × 0.023); enables <1.5 W loss at 8 A RMS in 12 V systems.
I_D (T_C = 25°C)	48 A - Continuous safe operating current with heatsink; defines maximum steady-state load in power supplies and battery protection circuits.
E_AS	220 mJ - Single-pulse avalanche energy rating; allows safe inductive turn-off without clamping in relay drivers and solenoid controls.
Q_g	60 nC - Total gate charge required for full enhancement; determines driver strength requirement (e.g., ≥1 A peak for 60 ns turn-on).
trr	69–104 ns - Body diode reverse recovery time; impacts switching loss and EMI in discontinuous conduction mode (DCM) flyback designs.
R_θJC	1.4 °C/W - Junction-to-case thermal resistance; enables accurate junction temperature estimation when mounted on copper heatsink with thermal interface.

Pinout & Package

IRFZ44ESTRLPBF uses the D2PAK (TO-263) surface-mount package: single-row 3-pin outline with exposed drain pad (pin 2) for thermal and electrical connection, 10.67 mm × 9.65 mm footprint, 4.83 mm height, and lead-free (PbF) finish.

Pin/Terminal	Circuit Role	Design Meaning
1 (G)	Gate	Controls channel conduction; requires 10 V for full enhancement; gate leakage <100 nA at ±20 V ensures low standby current.
2 (D)	Drain	Main high-side switching node; electrically and thermally connected to exposed copper pad; must be routed with low-inductance copper pour.
3 (S)	Source	Power return path and gate reference; internal source inductance (L_S) ≈ 25 nH affects high-speed switching ringing and gate drive stability.

Key Features

Feature	Design Value
Fully avalanche-rated	220 mJ single-pulse E_AS and 11 mJ repetitive E_AR enable reliable operation under inductive fault conditions without external protection.
Low R_DS(on)	0.023 Ω at 10 V gate drive reduces conduction losses by >30% vs. legacy 60 V MOSFETs, improving efficiency in 12–48 V industrial power stages.
Fast switching	12 ns turn-on delay + 60 ns rise time supports >200 kHz PWM in SMPS, minimizing dead-time losses in synchronous rectifiers.
Optimized body diode	1.3 V forward drop at 29 A and 69 ns typical trr allow efficient freewheeling in half-bridge motor drivers without adding Schottky catch diodes.
Thermally enhanced D2PAK	Exposed drain pad and 1.4 °C/W R_θJC support >2 W dissipation on standard 1"² FR-4 PCB, eliminating need for through-hole mounting in space-constrained designs.

Applications

DC-DC Buck Converter

Brushed DC Motor Driver

Use Scenario: 12 V input to 5 V/10 A output in industrial PLC power module.

IC Role / Device Role / Timing Role: High-side synchronous rectifier switch operating at 250 kHz PWM frequency.

Use Value: 0.023 Ω R_DS(on) limits conduction loss to 2.3 W at full load, enabling natural convection cooling without heatsink.

Use Scenario: Bidirectional 24 V, 15 A brushed motor control in automated gate actuator.

IC Role / Device Role / Timing Role: Low-side switch in H-bridge configuration with 100 kHz PWM for speed regulation.

Use Value: 192 A pulsed drain rating accommodates 5× stall current surges; avalanche rating prevents failure during rapid direction reversal.

LED Constant-Current Driver

Automotive Battery Protection

Use Scenario: 48 V bus driving 10 A LED string in commercial lighting fixture.

IC Role / Device Role / Timing Role: PWM-controlled current sink switch modulating LED brightness at 1 kHz.

Use Value: 60 V V_DSS provides 20% margin over nominal 48 V bus; low Q_g minimizes gate drive power in microcontroller-based dimming.

Use Scenario: Reverse-polarity and overcurrent protection in 24 V truck auxiliary power system.

IC Role / Device Role / Timing Role: High-side main power switch controlled by protection IC with fast fault response.

Use Value: 1.4 °C/W R_θJC and 110 W P_D allow sustained 20 A load current with minimal temperature rise during short-circuit events.

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
STP60NF06	R_DS(on) = 0.018 Ω, but TO-220 package; higher R_θJA (62 °C/W vs. 1.4 °C/W junction-to-case)	Requires heatsink and through-hole layout; unsuitable for compact SMT-only designs	Prefer when board space allows mechanical heatsinking and lower R_DS(on) justifies thermal trade-off
IXTP50N065	65 V rating, R_DS(on) = 0.015 Ω, TO-220; no avalanche rating specified in datasheet	Lacks documented E_AS; not recommended for inductive loads without external clamping	Select only for resistive or capacitive loads where avalanche stress is absent

Compared with STP60NF06 and IXTP50N065, IRFZ44ESTRLPBF offers superior thermal performance in surface-mount form factor and guaranteed avalanche ruggedness-critical for motor and relay drive reliability-while trading modestly higher R_DS(on) for broader system-level robustness.

Availability

IRFZ44ESTRLPBF is available at Aetrix Electronics and suitable for DC-DC converters, brushed motor drivers, LED constant-current supplies, and automotive battery protection circuits requiring stable component supply and long-term industrial availability.

Supply support for IRFZ44ESTRLPBF 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 solutions.

This device belongs to Infineon's legacy HEXFET® Power MOSFET product line, designed specifically for high-efficiency, high-reliability switching in industrial power conversion, motor control, and battery management systems.

FAQ

Is IRFZ44ESTRLPBF pin-compatible with IRFZ44N?

No. IRFZ44ESTRLPBF uses the D2PAK (TO-263) package with 3 pins and an exposed drain pad, while IRFZ44N is in TO-220 with 3 leads and no thermal pad. Footprint, thermal path, and soldering requirements differ fundamentally; direct replacement requires PCB redesign.

What is the maximum gate voltage rating for reliable operation?

The absolute maximum gate-to-source voltage is ±20 V. Operation above +15 V or below −10 V risks oxide damage. For robust 10 V logic-level drive, use a gate resistor ≤10 Ω with active pull-down to ensure fast turn-off and prevent shoot-through in bridge configurations.

Can IRFZ44ESTRLPBF be used in linear (analog) regulator applications?

No. It is optimized for switching operation only. Linear mode operation exceeds safe SOA limits beyond V_DS < 10 V and I_D < 5 A due to insufficient thermal mass and lack of Safe Operating Area characterization in linear region per datasheet.

Does this part require a gate driver IC for 200 kHz PWM operation?

Yes. With 60 nC total gate charge, driving directly from a 3.3 V MCU GPIO causes slow switching and excessive gate dissipation. A dedicated gate driver (e.g., TC4427 or IRS2004) delivering ≥1 A peak current is required to achieve specified td(on)/tr values and minimize switching losses.

IRFZ44ESTRLPBF Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: HEXFET®

Package/Case:: TO-263-3, D2PAK (2 Leads + Tab), TO-263AB

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

FET Type:: N-Channel

Technology:: MOSFET (Metal Oxide)

Drain to Source Voltage (Vdss):: 60 V

Current - Continuous Drain (Id) @ 25°C:: 48A (Tc)

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

Rds On (Max) @ Id, Vgs:: 23mOhm @ 29A, 10V

Vgs(th) (Max) @ Id:: 4V @ 250µA

Gate Charge (Qg) (Max) @ Vgs:: 60 nC @ 10 V

Vgs (Max):: ±20V

Input Capacitance (Ciss) (Max) @ Vds:: 1360 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:: D2PAK

IRFZ44ESTRLPBF FAQ

1.How can I place an order for IRFZ44ESTRLPBF through Aetrix?

Please submit a Request for Quotation (RFQ) for IRFZ44ESTRLPBF 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 IRFZ44ESTRLPBF reliable?

The price and inventory of IRFZ44ESTRLPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IRFZ44ESTRLPBF is usually 5 days.

3.What payment methods are accepted for IRFZ44ESTRLPBF?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IRFZ44ESTRLPBF transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for IRFZ44ESTRLPBF?

IRFZ44ESTRLPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your IRFZ44ESTRLPBF 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 IRFZ44ESTRLPBF?

For technical support, including IRFZ44ESTRLPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IRFZ44ESTRLPBF requirements.

6.How does Aetrix verify that IRFZ44ESTRLPBF is sourced from the original manufacturer or authorized distributors?

All IRFZ44ESTRLPBF 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 IRFZ44ESTRLPBF meets industry standards.

7.What is the process for return or replacement of IRFZ44ESTRLPBF?

All IRFZ44ESTRLPBF units undergo pre-shipment inspection (PSI). If there is an issue with IRFZ44ESTRLPBF, 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 IRFZ44ESTRLPBF part is unused and in its original packaging.

Return procedure for IRFZ44ESTRLPBF:

1.Submit a request within 90 days.

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

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