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

Infineon Technologies AUIRFZ24NS

Name: AUIRFZ24NS
Brand: Infineon Technologies
SKU: AUIRFZ24NS
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AUIRFZ24NS

Manufacturer:: Infineon Technologies

Category:: FETs, MOSFETs

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

Datasheet:: AUIRFZ24NS.pdf

Description:: MOSFET N-CH 55V 17A DPAK

Quantity:: RFQ Add To RFQ list

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Product details

Overview

AUIRFZ24NS from Infineon is an automotive-grade N-channel D2-Pak (TO-263AB) HEXFET® Power MOSFET with 55 V V_DS, 0.07 Ω R_DS(on) max at V_GS = 10 V and 10 A, and 17 A continuous drain current at T_C = 25°C. It operates up to 175°C junction temperature, features full avalanche rating, and is used in high-reliability DC-DC converters and motor control stages in engine management systems.

For engineers reviewing the AUIRFZ24NS datasheet, AUIRFZ24NS pinout, AUIRFZ24NS application, or AUIRFZ24NS equivalent, key selection criteria include its 68 A pulsed drain current, 71 mJ single-pulse avalanche energy, 20 nC total gate charge, and D2-Pak thermal performance (R_θJC = 3.3°C/W), critical for automotive power stage design under transient stress.

Technical Context

This MOSFET employs advanced planar silicon processing to minimize conduction loss while maintaining robust dynamic dV/dt (6.8 V/ns) and dI/dt capability. Its gate threshold voltage (2.0–4.0 V) and low 5.3 nC gate-to-source charge support fast, predictable turn-on in 12 V automotive supply environments.

The device integrates a co-packaged body diode with 1.3 V forward voltage at 10 A and 56–83 ns reverse recovery time, enabling efficient synchronous rectification and freewheeling in buck and half-bridge topologies without external diode supplementation.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	55 V - Withstands peak transients up to 44 V in 12 V automotive systems without breakdown.
R_DS(on) max	0.07 Ω @ V_GS = 10 V, I_D = 10 A - Enables ≤0.7 W conduction loss at 10 A, reducing heatsink requirements.
I_D continuous	17 A @ T_C = 25°C - Supports high-current loads such as fuel pump drivers and HVAC blower motors.
E_AS	71 mJ - Absorbs unclamped inductive energy during switching faults, protecting against destructive avalanche events.
Q_g	20 nC - Determines gate drive power requirement; compatible with standard 1 A peak gate drivers.
T_J max	175°C - Meets AEC-Q101 requirements for under-hood operation in engine control units.
dv/dt rating	6.8 V/ns - Resists false turn-on due to high-speed voltage transients in noisy automotive environments.

Pinout & Package

D2-Pak (TO-263AB) package with exposed drain pad for enhanced thermal conduction and mechanical stability on PCB. Standard 3-pin configuration: Gate (G), Drain (D), Source (S), with Drain connected to the metal tab for low-inductance, high-current path routing.

Pin/Terminal	Circuit Role	Design Meaning
G	Gate	Controls channel conduction; requires 10 V drive for full enhancement; 2.0–4.0 V threshold enables compatibility with 3.3 V/5 V logic-level controllers via level-shifting.
D	Drain	Main high-side power terminal; electrically and thermally connected to exposed metal tab; must be routed with wide copper pour for thermal dissipation and current handling.
S	Source	Power return path and reference node for gate drive; tied to system ground in low-side switch configurations; forms source of internal body diode.

Key Features

Feature	Design Value
175°C operating junction temperature	Enables deployment in high-ambient under-hood locations without derating, meeting AEC-Q101 Grade 0/1 thermal requirements.
Full repetitive avalanche rating	Allows safe operation under repeated inductive switching stress (up to 4.5 mJ per pulse), eliminating need for external snubbers in solenoid drivers.
Low 7.5 nH internal source inductance	Reduces voltage overshoot during fast turn-off, improving EMI profile and enabling higher switching frequencies in DC-DC regulators.
Lead-free, RoHS-compliant construction	Meets automotive environmental compliance standards (ELV Directive) and supports lead-free reflow soldering processes (300°C for 10 s).
Dynamic dV/dt capability (6.8 V/ns)	Prevents spurious turn-on during high dv/dt events in high-frequency inverters, enhancing system reliability without added gate resistors.

Applications

Engine Control Unit (ECU) Fuel Injector Driver

Automotive HVAC Blower Motor Controller

Use Scenario: High-speed, high-current switching of 12 V fuel injectors with inductive kickback suppression.

IC Role / Device Role / Timing Role: Low-side power switch with integrated avalanche energy absorption and fast 27 ns fall time.

Use Value: Eliminates external flyback diode; 71 mJ E_AS handles injector coil energy without failure across 10,000+ cycles.

Use Scenario: PWM-controlled DC motor drive for cabin air circulation with thermal cycling up to 150°C ambient.

IC Role / Device Role / Timing Role: High-current N-channel switch in half-bridge configuration with body diode freewheeling.

Use Value: 175°C T_J rating and 12 A continuous current at T_C = 100°C ensure stable operation without thermal shutdown.

12 V–48 V Automotive DC-DC Converter

Start-Stop System Battery Management Switch

Use Scenario: Synchronous rectifier in high-efficiency buck converter supplying ADAS camera modules.

IC Role / Device Role / Timing Role: Secondary-side power MOSFET with low R_DS(on) and 34 ns rise time for <100 kHz operation.

Use Value: 0.07 Ω R_DS(on) reduces conduction loss by >30% vs. comparable 55 V MOSFETs, improving conversion efficiency above 94%.

Use Scenario: Load switch isolating starter battery from auxiliary circuits during engine cranking.

IC Role / Device Role / Timing Role: High-reliability power path controller with overcurrent and thermal fault tolerance.

Use Value: 68 A pulsed drain current and 3.3°C/W R_θJC enable 200 A peak cranking surge handling with minimal voltage drop.

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
STL220N4F7AG	40 V V_DS, 0.35 mΩ R_DS(on), PowerFLAT 5x6 package, lower thermal resistance (1.5°C/W), but lower voltage rating.	Not suitable for 48 V systems or 55 V transients; limited to 12 V/24 V low-voltage domains.	Select only if system V_DD ≤ 36 V and board space is constrained; verify avalanche capability is not required.
IRFZ44NPBF	55 V V_DS, 0.028 Ω R_DS(on), TO-220 package, non-automotive grade, no AEC-Q101 qualification, 150°C T_J max.	Lacks automotive qualification and 175°C rating; unsuitable for under-hood use or safety-critical functions.	Acceptable for cost-sensitive industrial prototypes only; not recommended for production automotive designs.

Compared with STL220N4F7AG and IRFZ44NPBF, AUIRFZ24NS uniquely balances 55 V rating, AEC-Q101 compliance, 175°C operation, and D2-Pak thermal performance-making it the sole choice for production-grade 12 V/48 V automotive power switches requiring avalanche ruggedness and long-term reliability.

Availability

AUIRFZ24NS is available at Aetrix Electronics and suitable for engine control units, HVAC motor drives, DC-DC converters, and start-stop battery management systems requiring stable component supply across automotive production lifecycles.

Supply support for AUIRFZ24NS 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 AEC-Q101 validation infrastructure.

AUIRFZ24NS belongs to Infineon's automotive-qualified HEXFET® Power MOSFET product line, engineered specifically for high-reliability, high-temperature switching in engine, transmission, and chassis control systems.

FAQ

Is AUIRFZ24NS pin-compatible with AUIRFZ24NL?

Yes, AUIRFZ24NS (D2-Pak/TO-263AB) and AUIRFZ24NL (TO-262) share identical pinout order (G-D-S) and electrical specifications, but differ in package thermal performance: AUIRFZ24NS has R_θJC = 3.3°C/W versus 3.8°C/W for AUIRFZ24NL, making it preferable for higher-power-density layouts.

What is the maximum gate drive voltage for AUIRFZ24NS?

The absolute maximum gate-to-source voltage is ±20 V. For reliable operation, gate drive should be limited to 10–15 V to ensure full enhancement while avoiding oxide stress; exceeding 16 V increases risk of long-term threshold shift, especially at elevated temperatures.

Does AUIRFZ24NS require a gate resistor in automotive applications?

A gate resistor (typically 10–24 Ω) is recommended to dampen ringing caused by PCB trace inductance and MOSFET input capacitance, particularly in high-dv/dt environments like alternator load dumps; omission may cause oscillation and premature gate oxide failure.

Can AUIRFZ24NS be used in synchronous rectification topologies?

Yes-the integrated body diode has 1.3 V forward voltage at 10 A and 56–83 ns reverse recovery time, enabling use in synchronous buck converters up to 200 kHz; however, external Schottky diodes are preferred for >300 kHz operation due to lower Q_rr and trr.

AUIRFZ24NS Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: HEXFET®

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

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:: 17A (Tc)

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

Rds On (Max) @ Id, Vgs:: 70mOhm @ 10A, 10V

Vgs(th) (Max) @ Id:: 4V @ 250µA

Gate Charge (Qg) (Max) @ Vgs:: 20 nC @ 10 V

Vgs (Max):: ±20V

Input Capacitance (Ciss) (Max) @ Vds:: 370 pF @ 25 V

FET Feature:: -

Power Dissipation (Max):: 3.8W (Ta), 45W (Tc)

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

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

AUIRFZ24NS FAQ

1.How can I place an order for AUIRFZ24NS through Aetrix?

Please submit a Request for Quotation (RFQ) for AUIRFZ24NS 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 AUIRFZ24NS reliable?

The price and inventory of AUIRFZ24NS are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AUIRFZ24NS is usually 5 days.

3.What payment methods are accepted for AUIRFZ24NS?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AUIRFZ24NS transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AUIRFZ24NS?

AUIRFZ24NS orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AUIRFZ24NS 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 AUIRFZ24NS?

For technical support, including AUIRFZ24NS datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AUIRFZ24NS requirements.

6.How does Aetrix verify that AUIRFZ24NS is sourced from the original manufacturer or authorized distributors?

All AUIRFZ24NS 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 AUIRFZ24NS meets industry standards.

7.What is the process for return or replacement of AUIRFZ24NS?

All AUIRFZ24NS units undergo pre-shipment inspection (PSI). If there is an issue with AUIRFZ24NS, 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 AUIRFZ24NS part is unused and in its original packaging.

Return procedure for AUIRFZ24NS:

1.Submit a request within 90 days.

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

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