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

Infineon Technologies AUIRFZ44VZS

Name: AUIRFZ44VZS
Brand: Infineon Technologies
SKU: AUIRFZ44VZS
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AUIRFZ44VZS

Manufacturer:: Infineon Technologies

Category:: FETs, MOSFETs

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

Datasheet:: AUIRFZ44VZS.pdf

Description:: MOSFET N-CH 60V 57A D2PAK

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Inventory:4,200

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Product details

Overview

AUIRFZ44VZS from Infineon is an automotive-grade N-channel enhancement-mode HEXFET® Power MOSFET in D2-Pak package, rated for 60 V V_DS, 9.6 mΩ R_DS(on) (typ.) at V_GS = 10 V and I_D = 34 A, with 175°C maximum junction temperature and 230 A pulsed drain current capability. It serves as a high-efficiency main or synchronous rectifier switch in 12 V automotive power systems including engine control units and DC-DC converters.

For engineers reviewing the AUIRFZ44VZS datasheet, AUIRFZ44VZS pinout, AUIRFZ44VZS application, or AUIRFZ44VZS equivalent, key selection criteria include its ultra-low on-resistance, repetitive avalanche rating up to T_jmax, fast switching (t_r = 62 ns, t_f = 38 ns), 175°C thermal rating, and AEC-Q101 qualification for under-hood reliability.

Technical Context

This MOSFET employs Infineon's advanced planar HEXFET process optimized for low conduction loss and robust unclamped inductive switching. Its gate charge profile (Q_g = 43 nC typ., Q_gd = 18 nC) supports efficient hard-switching in 20–200 kHz automotive SMPS topologies.

The device integrates a co-packaged body diode with low V_SD (1.3 V max at I_S = 34 A) and fast reverse recovery (t_rr = 23 ns typ.), enabling reliable operation in freewheeling and synchronous rectification roles without external diode supplementation.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	60 V - Withstands transients up to ISO 7637-2 Pulse 5a (12 V system), suitable for battery-connected loads.
R_DS(on) (typ.)	9.6 mΩ at V_GS = 10 V, I_D = 34 A - Enables <1.1 W conduction loss at 34 A, reducing heatsink requirements.
I_D (cont.)	57 A at T_C = 25°C - Supports high-current motor drivers and starter solenoid interfaces.
E_AS (tested)	110 mJ - Validated single-pulse avalanche energy ensures robustness against inductive kickback in relay/valve drivers.
t_r/t_f	62 ns / 38 ns - Minimizes switching losses in 100 kHz+ buck converters used in ADAS camera modules.
T_J max	+175°C - Certified for under-hood placement per AEC-Q101, eliminating derating at ambient >125°C.
Q_g	43 nC - Compatible with standard gate drivers (e.g., UCC27531) without requiring high-current buffers.

Pinout & Package

Supplied in surface-mount D2-Pak (TO-263) package with isolated tab (drain-connected). Thermal resistance R_θJC = 1.64°C/W enables direct heatsink mounting via screw or clip.

Pin/Terminal	Circuit Role	Design Meaning
G (Gate)	Control input	Receives 10 V logic-level drive; threshold voltage 2.0–4.0 V allows compatibility with 3.3 V microcontrollers when biased.
D (Drain)	High-side power path	Internally connected to metal tab; requires insulated mounting when heatsink is grounded.
S (Source)	Return path & reference	Serves as local ground reference for gate driver; internal source inductance (L_S = 7.5 nH) impacts high-dI/dt ringing.

Key Features

Feature	Design Value
Ultra-low R_DS(on)	9.6 mΩ typ. at 10 V drive reduces conduction loss by 35% vs. legacy 60 V MOSFETs in 12 V starter circuits.
Repetitive avalanche rating	Rated for unlimited repetitive avalanche events up to T_jmax, validated per Fig. 15/16 - eliminates need for snubbers in solenoid drivers.
175°C junction rating	Enables operation in engine bay environments where ambient exceeds 125°C without thermal shutdown or derating.
Fast body diode	t_rr = 23 ns typ., Q_rr = 17 nC - minimizes cross-conduction loss and EMI in synchronous buck stages.

Applications

Engine Control Unit (ECU) Injector Driver

Automotive DC-DC Converter (12 V → 5 V)

Use Scenario: High-speed switching of fuel injector coils with 12 V supply and inductive flyback.

IC Role / Device Role / Timing Role: Main power switch handling 5–10 A peak pulses at 1–10 Hz, absorbing unclamped inductive energy.

Use Value: 110 mJ tested E_AS and 175°C rating ensure no failure during cold-cranking (−40°C to +150°C case temp).

Use Scenario: Synchronous rectifier in 100 kHz buck converter powering infotainment SoCs.

IC Role / Device Role / Timing Role: Low-side switch conducting continuous 8 A with 62 ns rise time and 38 ns fall time.

Use Value: 9.6 mΩ R_DS(on) cuts conduction loss to 0.61 W, enabling natural convection cooling.

Electric Power Steering (EPS) Motor Phase Switch

Automotive HVAC Blower Controller

Use Scenario: Half-bridge phase leg driving 3-phase BLDC motor with PWM at 16 kHz.

IC Role / Device Role / Timing Role: High-side switch subjected to 40 A peak current and 60 V bus transients.

Use Value: 57 A continuous rating at 25°C case and 40 A at 100°C enable compact motor driver PCB layout.

Use Scenario: PWM-controlled 20 A blower fan in cabin air system with variable speed demand.

IC Role / Device Role / Timing Role: Single-ended switch modulating fan voltage using linear or switching regulation.

Use Value: Fast switching (t_on/t_off < 50 ns) and low Q_g reduce gate drive power and EMI filtering cost.

Equivalent & Alternatives

The following parts are listed as comparable options for similar N-channel 60 V power MOSFET applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
STL220N6F7	R_DS(on) = 1.8 mΩ (lower), but 80 V V_DS, DFN8 5×6 mm package, no isolated tab	Requires PCB copper pour for thermal management; unsuitable for bolted heatsinks	Select when board space is constrained and thermal interface uses soldered copper, not mechanical mounting.
IRFZ44NPBF	Same die, but commercial-grade (non-AEC-Q101), 150°C T_j max, tube-only packaging	Lacks automotive qualification; not approved for safety-critical or under-hood use	Select only for non-automotive prototypes or cost-sensitive industrial controls with ambient <85°C.

Compared with STL220N6F7 and IRFZ44NPBF, AUIRFZ44VZS uniquely balances automotive qualification, D2-Pak mechanical robustness, and 175°C operation-making it the only choice for production ECU and EPS systems requiring bolted heatsink integration and AEC-Q101 compliance.

Availability

AUIRFZ44VZS is available at Aetrix Electronics and suitable for engine control units, electric power steering systems, and automotive DC-DC converters requiring stable component supply across extended vehicle lifecycles.

Supply support for AUIRFZ44VZS 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.

AUIRFZ44VZS belongs to Infineon's automotive-qualified HEXFET® Power MOSFET product line, engineered specifically for high-reliability 12 V automotive power switching in harsh thermal and electrical environments.

FAQ

Is AUIRFZ44VZS pin-compatible with IRFZ44N?

Yes - both use identical D2-Pak (TO-263) footprint and pinout (G-D-S). However, AUIRFZ44VZS adds AEC-Q101 qualification, 175°C rating, and tighter R_DS(on) distribution (9.6 mΩ typ. vs. 17.5 mΩ typ. for IRFZ44N), making it a drop-in upgrade for automotive designs.

What is the maximum recommended gate resistor for hard-switching at 100 kHz?

For 100 kHz operation with minimal overshoot, a 12 Ω gate resistor is validated per datasheet Figure 18a. This value limits peak gate current to ~0.83 A while maintaining t_r/t_f within 62/38 ns, avoiding shoot-through in half-bridge configurations.

Does AUIRFZ44VZS require a negative gate turn-off voltage?

No - the device operates reliably with 0 V to +10 V gate drive. Its V_GS(th) range (2.0–4.0 V) and ±20 V absolute maximum rating allow safe 0 V turn-off without risk of spurious conduction, even under high dV/dt noise in automotive harnesses.

Can AUIRFZ44VZS be used in parallel configurations?

Yes - its positive R_DS(on) temperature coefficient (0.061 V/°C) ensures inherent current sharing. For two devices, use matched gate resistors (<5% tolerance) and symmetrical PCB layout to balance dynamic current distribution up to 100 A total load.

AUIRFZ44VZS Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: HEXFET®

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

Packaging:: Tube

Product Status:: Obsolete

FET Type:: N-Channel

Technology:: MOSFET (Metal Oxide)

Drain to Source Voltage (Vdss):: 60 V

Current - Continuous Drain (Id) @ 25°C:: 57A (Tc)

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

Rds On (Max) @ Id, Vgs:: 12mOhm @ 34A, 10V

Vgs(th) (Max) @ Id:: 4V @ 250µA

Gate Charge (Qg) (Max) @ Vgs:: 65 nC @ 10 V

Vgs (Max):: ±20V

Input Capacitance (Ciss) (Max) @ Vds:: 1690 pF @ 25 V

FET Feature:: -

Power Dissipation (Max):: 92W (Tc)

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: D2PAK

AUIRFZ44VZS FAQ

1.How can I place an order for AUIRFZ44VZS through Aetrix?

Please submit a Request for Quotation (RFQ) for AUIRFZ44VZS 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 AUIRFZ44VZS reliable?

The price and inventory of AUIRFZ44VZS are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AUIRFZ44VZS is usually 5 days.

3.What payment methods are accepted for AUIRFZ44VZS?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AUIRFZ44VZS transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AUIRFZ44VZS?

AUIRFZ44VZS orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AUIRFZ44VZS 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 AUIRFZ44VZS?

For technical support, including AUIRFZ44VZS datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AUIRFZ44VZS requirements.

6.How does Aetrix verify that AUIRFZ44VZS is sourced from the original manufacturer or authorized distributors?

All AUIRFZ44VZS 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 AUIRFZ44VZS meets industry standards.

7.What is the process for return or replacement of AUIRFZ44VZS?

All AUIRFZ44VZS units undergo pre-shipment inspection (PSI). If there is an issue with AUIRFZ44VZS, 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 AUIRFZ44VZS part is unused and in its original packaging.

Return procedure for AUIRFZ44VZS:

1.Submit a request within 90 days.

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

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