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

Infineon Technologies AUIRFS4127TRL

Name: AUIRFS4127TRL
Brand: Infineon Technologies
SKU: AUIRFS4127TRL
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AUIRFS4127TRL

Manufacturer:: Infineon Technologies

Category:: FETs, MOSFETs

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

Datasheet:: AUIRFS4127TRL.pdf

Description:: MOSFET N-CH 200V 72A D2PAK

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Product details

Overview

AUIRFS4127 from Infineon is an automotive-grade N-channel enhancement-mode HEXFET® Power MOSFET in D2Pak (TO-263AB) package, rated for 200V V_DSS, 72A continuous drain current at T_C = 25°C, and 18.6 mΩ typical R_DS(on) at V_GS = 10V. It delivers fast switching (t_r = 18 ns, t_f = 22 ns), 175°C junction operation, and 250 mJ single-pulse avalanche energy - deployed in high-reliability engine control units and DC-DC converters.

For engineers reviewing the AUIRFS4127 datasheet, AUIRFS4127 pinout, AUIRFS4127 application, or AUIRFS4127 equivalent, key selection criteria include its 200V breakdown voltage, ultra-low on-resistance under automotive thermal stress, repetitive avalanche capability up to T_jmax, and D2Pak thermal performance with R_θJC = 0.4°C/W.

Technical Context

This MOSFET uses Infineon's advanced planar HEXFET process optimized for low R_DS(on)/area and robust body diode recovery. Its gate threshold voltage (3.0–5.0 V) ensures stable turn-on across automotive temperature range (-55°C to +175°C), while Q_gd = 31 nC and C_oss = 410 pF support high-frequency hard-switching topologies.

The device integrates a monolithic p-n junction body diode with t_rr = 136 ns (T_J = 25°C) and Q_rr = 458 nC, enabling efficient synchronous rectification and unclamped inductive switching. Repetitive avalanche is validated per AN-1005 with E_AR = 150 mJ at 1% duty cycle and T_J,start = 25°C.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DSS	200 V - Withstands 200 V drain-source blocking voltage before avalanche onset; suitable for 12 V/24 V automotive bus systems with transient overvoltage margin.
R_DS(on) max	22 mΩ @ V_GS = 10 V, I_D = 44 A - Enables <1.5 W conduction loss at 72 A, critical for high-current motor drivers and starter solenoid control.
I_D continuous	72 A @ T_C = 25°C - Supports high-power loads such as electric power steering (EPS) inverters and HVAC blower drives without forced cooling.
E_AS	250 mJ - Single-pulse avalanche energy rating allows safe operation during inductive load turn-off transients in transmission control modules.
t_r/t_f	18 ns / 22 ns - Fast edge rates reduce switching losses in 100–500 kHz DC-DC converters used in ADAS domain controllers.
R_θJC	0.4 °C/W - Low junction-to-case thermal resistance enables direct heatsink mounting in compact engine bay layouts with minimal thermal interface material.
Q_g	100–150 nC - Gate charge level compatible with standard 1–2 A gate drivers; Miller charge Q_gd = 31 nC limits dv/dt-induced false turn-on risk.

Pinout & Package

Package: D2Pak (TO-263AB), surface-mount, isolated tab (drain-connected), 3-terminal configuration with exposed copper pad for thermal dissipation.

Pin/Terminal	Circuit Role	Design Meaning
Pin 1 (Tab)	Drain (D)	Electrically connected to the metal tab; primary heat path to heatsink; must be electrically isolated from PCB ground unless system design requires common-drain topology.
Pin 2	Source (S)	Power return node for load current; connects to low-side shunt resistor for current sensing; referenced to gate drive circuitry.
Pin 3	Gate (G)	High-impedance control input; requires <2.5 Ω series resistance to damp ringing; sensitive to ESD (±20 V absolute max rating).

Key Features

Feature	Design Value
Automotive qualification	AEC-Q101 qualified; validated for -55°C to +175°C operation and 1000-cycle temperature cycling - meets requirements for under-hood power electronics.
Repetitive avalanche rating	Rated for repetitive unclamped inductive switching up to 150 mJ at 1% duty cycle - eliminates need for external snubbers in solenoid driver circuits.
Body diode performance	t_rr = 136 ns, Q_rr = 458 nC, V_SD = 1.3 V @ I_S = 44 A - Enables efficient freewheeling in half-bridge motor drives without external Schottky parallel diodes.
Lead-free & RoHS	Halogen-free, Pb-free terminations compliant with EU RoHS Directive 2011/65/EU and JESD204B - supports global automotive supply chain traceability.

Applications

Engine Control Unit (ECU) Fuel Injector Driver

Electric Power Steering (EPS) Motor Phase Switch

Use Scenario: High-speed, high-current switching of 12 V fuel injectors with inductive kickback up to 100 V.

IC Role / Device Role / Timing Role: Low-side switch controlling injector coil energization/de-energization; handles 72 A peak current pulses with 10 µs turn-off.

Use Value: 22 mΩ R_DS(on) minimizes I²R heating during 10 ms dwell time; 250 mJ E_AS absorbs inductive energy without clamping diodes.

Use Scenario: Half-bridge phase leg in 48 V EPS motor inverter delivering >5 kW peak power.

IC Role / Device Role / Timing Role: High-current N-channel switch in H-bridge topology; operates at 20 kHz PWM with 18 ns rise time.

Use Value: 0.4 °C/W R_θJC enables direct heatsink mounting in space-constrained steering column enclosures; 175°C T_J rating sustains operation near gearbox heat sources.

Onboard Charger (OBC) DC-DC Isolation Stage

Transmission Control Module (TCM) Solenoid Actuator

Use Scenario: Primary-side switch in resonant LLC converter stepping down 400 V battery to 12 V auxiliary rail.

IC Role / Device Role / Timing Role: High-voltage, high-frequency switching element; subjected to 200 V blocking and 100 kHz switching.

Use Value: C_oss = 410 pF and Q_gd = 31 nC enable zero-voltage switching (ZVS) at light loads; 200 V V_DSS provides 2× safety margin over 400 V bus.

Use Scenario: Pulse-width modulated actuation of hydraulic pressure control solenoids in 8-speed automatic transmissions.

IC Role / Device Role / Timing Role: Low-side driver for 24 V, 3 A solenoid coils with 100 ms duty cycles and 500 V flyback spikes.

Use Value: Repetitive avalanche rating (E_AR = 150 mJ) permits reliable operation without external TVS; 175°C rating survives proximity to transmission fluid heat.

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-current automotive N-channel MOSFET applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
STL220N6F7	60 V V_DSS, 220 A I_D, TO-220FP package, R_DS(on) = 1.9 mΩ - lower voltage, higher current, larger package.	Not suitable for 200 V systems; limited to 12 V/48 V low-voltage traction inverters and battery disconnect switches.	Select only if operating voltage ≤60 V and board space allows TO-220FP mounting; inferior thermal resistance (R_θJC = 1.2°C/W) vs. D2Pak.
IRFB4115PBF	150 V V_DSS, 110 A I_D, TO-220 package, R_DS(on) = 6.5 mΩ - lower voltage rating, higher current, non-automotive grade.	Lacks AEC-Q101 qualification; not recommended for safety-critical engine or transmission control functions.	Acceptable for industrial 150 V DC bus applications (e.g., UPS, solar inverters); avoid in automotive ECU/TCM where qualification and 200 V margin are mandatory.

Compared with STL220N6F7 and IRFB4115PBF, AUIRFS4127 uniquely combines 200 V rating, AEC-Q101 compliance, D2Pak thermal performance (0.4°C/W), and validated repetitive avalanche - making it the only viable option for 24 V/48 V automotive high-side or low-side switching above 50 A with transient immunity.

Availability

AUIRFS4127 is available at Aetrix Electronics and suitable for engine control units, electric power steering systems, and onboard chargers requiring stable component supply across extended automotive product lifecycles.

Supply support for AUIRFS4127 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 qualification infrastructure.

AUIRFS4127 belongs to Infineon's automotive-qualified HEXFET® Power MOSFET product line, engineered specifically for high-reliability, high-current switching in engine, transmission, and chassis control modules under extreme thermal and electrical stress.

FAQ

What is the maximum allowable gate-to-source voltage for AUIRFS4127?

The absolute maximum V_GS is ±20 V, as specified in the Absolute Maximum Ratings table. Operation beyond this range risks permanent gate oxide damage. For reliable switching, gate drive should be clamped between 0 V and 10–15 V, with transient overshoot suppressed using Zener diodes or active clamp circuits.

Can AUIRFS4127 be used in parallel configurations?

Yes - its positive R_DS(on) temperature coefficient (0.23 V/°C for V_(BR)DSS) and matched threshold voltage distribution support current sharing. However, layout symmetry, individual gate resistors (≥2.7 Ω), and Kelvin source connections are required to prevent thermal runaway at 72 A per device.

Does AUIRFS4127 require a heatsink in automotive applications?

Yes - even with R_θJC = 0.4°C/W, continuous 72 A operation at 22 mΩ generates ~113 W of conduction loss. A heatsink maintaining T_C ≤100°C is mandatory; thermal interface material and mechanical mounting torque must comply with Infineon's AN-994 footprint guidelines for D2Pak.

How does the body diode recovery performance impact synchronous rectification?

With t_rr = 136 ns and Q_rr = 458 nC at 25°C, the body diode introduces measurable reverse recovery loss in synchronous buck converters above 100 kHz. To minimize shoot-through risk, gate timing must delay high-side turn-on by ≥200 ns after low-side turn-off, and dead-time controllers should be calibrated per actual Q_rr vs. T_J curves.

AUIRFS4127TRL 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:: Not For New Designs

FET Type:: N-Channel

Technology:: MOSFET (Metal Oxide)

Drain to Source Voltage (Vdss):: 200 V

Current - Continuous Drain (Id) @ 25°C:: 72A (Tc)

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

Rds On (Max) @ Id, Vgs:: 22mOhm @ 44A, 10V

Vgs(th) (Max) @ Id:: 5V @ 250µA

Gate Charge (Qg) (Max) @ Vgs:: 150 nC @ 10 V

Vgs (Max):: ±20V

Input Capacitance (Ciss) (Max) @ Vds:: 5380 pF @ 50 V

FET Feature:: -

Power Dissipation (Max):: 375W (Tc)

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

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Surface Mount

Supplier Device Package:: PG-TO263-3

AUIRFS4127TRL FAQ

1.How can I place an order for AUIRFS4127TRL through Aetrix?

Please submit a Request for Quotation (RFQ) for AUIRFS4127TRL 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 AUIRFS4127TRL reliable?

The price and inventory of AUIRFS4127TRL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AUIRFS4127TRL is usually 5 days.

3.What payment methods are accepted for AUIRFS4127TRL?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AUIRFS4127TRL transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AUIRFS4127TRL?

AUIRFS4127TRL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AUIRFS4127TRL 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 AUIRFS4127TRL?

For technical support, including AUIRFS4127TRL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AUIRFS4127TRL requirements.

6.How does Aetrix verify that AUIRFS4127TRL is sourced from the original manufacturer or authorized distributors?

All AUIRFS4127TRL 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 AUIRFS4127TRL meets industry standards.

7.What is the process for return or replacement of AUIRFS4127TRL?

All AUIRFS4127TRL units undergo pre-shipment inspection (PSI). If there is an issue with AUIRFS4127TRL, 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 AUIRFS4127TRL part is unused and in its original packaging.

Return procedure for AUIRFS4127TRL:

1.Submit a request within 90 days.

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

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