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

Infineon Technologies AUIRLR120N

Name: AUIRLR120N
Brand: Infineon Technologies
SKU: AUIRLR120N
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AUIRLR120N

Manufacturer:: Infineon Technologies

Category:: FETs, MOSFETs

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

Datasheet:: AUIRLR120N.pdf

Description:: MOSFET N-CH 100V 10A DPAK

Quantity:: RFQ Add To RFQ list

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Product details

Overview

AUIRLR120N from Infineon is an automotive-qualified N-channel D-Pak (TO-252AA) HEXFET® Power MOSFET with 100 V V_BRDSS, 0.185 Ω R_DS(on) @ 10 V_GS, 10 A continuous drain current at T_C = 25°C, and 175°C maximum junction temperature-designed for high-reliability DC-DC converters, motor drivers, and load switches in engine control units and body electronics.

For engineers reviewing the AUIRLR120N datasheet, AUIRLR120N pinout, AUIRLR120N application, or AUIRLR120N equivalent, key selection criteria include logic-level gate drive compatibility (V_GS(th) = 1.0–2.0 V), repetitive avalanche rating (E_AR = 4.8 mJ), fast switching (t_r = 35 ns, t_f = 22 ns), and thermal robustness (R_θJC = 3.1 °C/W).

Technical Context

This N-channel enhancement-mode MOSFET uses advanced planar silicon processing to achieve low on-resistance per die area while maintaining rugged unclamped inductive switching capability. Its dynamic dV/dt rating (5.0 V/ns) and fully avalanche-rated structure support reliable operation under harsh automotive transients.

The device integrates a monolithic body diode with t_rr = 110–160 ns and Q_rr = 410–620 nC, enabling efficient synchronous rectification and freewheeling in buck converters and H-bridge motor drives without external diode supplementation.

Key Specifications

Parameter	Value and Actual Design Meaning
V_BRDSS	100 V - Withstands up to 100 V drain-source blocking voltage before avalanche onset; suitable for 48 V automotive systems with margin.
R_DS(on) max	0.185 Ω @ V_GS = 10 V, I_D = 6 A - Enables <1.1 W conduction loss at 10 A, reducing heatsink requirements in space-constrained modules.
I_D continuous	10 A @ T_C = 25°C - Supports sustained 10 A load switching in engine bay environments when properly heatsinked.
Q_g	20 nC - Low gate charge enables fast turn-on/off with modest gate driver current (e.g., 1 A peak suffices for <20 ns rise time).
t_r/t_f	35 ns / 22 ns - Minimizes switching losses in PWM frequencies up to 200 kHz, critical for high-efficiency DC-DC stages.
T_J max	+175°C - Rated for under-hood operation without derating in ambient temperatures up to +125°C with proper thermal design.
E_AS	85 mJ - Single-pulse avalanche energy allows safe handling of inductive kickback in solenoid and relay drive circuits.

Pinout & Package

D-Pak (TO-252AA) package with exposed drain pad for thermal and electrical connection; surface-mount, single-row 3-pin configuration optimized for PCB heat spreading and automated assembly.

Pin/Terminal	Circuit Role	Design Meaning
Drain (Tab)	Main power output terminal	Electrically and thermally connected to large copper pad; must be soldered to ≥1"² PCB copper for R_θJC = 3.1 °C/W performance.
Source	Power return path and reference node	Serves as common return for gate drive and load current; low-inductance layout essential for stable switching.
Gate	Control input for channel conduction	Logic-level compatible (V_GS(th) ≤ 2.0 V); requires <20 nC total charge for full enhancement; sensitive to ESD.

Key Features

Feature	Design Value
Automotive qualification	AEC-Q101 qualified per Infineon's automotive stress test standards-validated for 15-year lifetime in engine control, lighting, and ADAS subsystems.
Logic-level gate drive	V_GS(th) = 1.0–2.0 V enables direct interface with 3.3 V/5 V microcontrollers without level-shifting circuitry.
Repetitive avalanche rating	E_AR = 4.8 mJ at T_J = 175°C supports repeated inductive turn-off events in motor phase-legs and solenoid drivers.
Fast body diode	t_rr = 110–160 ns with Q_rr = 410–620 nC reduces reverse recovery losses and EMI in synchronous rectifier topologies.
Thermal robustness	R_θJC = 3.1 °C/W and 175°C T_J max allow operation in high-ambient zones (e.g., near exhaust manifolds) with minimal derating.

Applications

Engine Control Unit (ECU) Fuel Injector Driver

Automotive LED Headlamp Dimming

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

IC Role / Device Role / Timing Role: Main power switch controlling injector coil energization/de-energization; handles 10 A pulsed loads with 5 µs turn-on and sub-10 µs turn-off.

Use Value: Repetitive avalanche rating (E_AR = 4.8 mJ) absorbs inductive energy without snubber components, reducing BOM count and board area.

Use Scenario: PWM dimming of high-brightness LED arrays in adaptive front-lighting systems (AFS).

IC Role / Device Role / Timing Role: Low-loss, high-frequency (≥20 kHz) current sink switch in constant-current LED driver stage.

Use Value: 0.185 Ω R_DS(on) limits conduction loss to <1.9 W at 10 A, enabling compact thermal design in sealed headlamp housings.

12 V/48 V DC-DC Converter Primary Switch

Body Control Module (BCM) Load Switch

Use Scenario: High-efficiency synchronous buck converter stepping 48 V battery down to 12 V for infotainment and telematics.

IC Role / Device Role / Timing Role: High-side primary switch operating at 100–200 kHz with 35 ns rise time and 22 ns fall time.

Use Value: Low Q_g (20 nC) and fast switching minimize gate drive loss and total switching loss, achieving >95% efficiency at 5 A output.

Use Scenario: Controlled power-up/down of subsystems (e.g., window lift motors, seat heaters) with overcurrent and thermal protection.

IC Role / Device Role / Timing Role: Protected high-side load switch with integrated current sensing and thermal shutdown.

Use Value: 175°C T_J max and 10 A continuous rating enable reliable operation in hot BCM enclosures without active cooling.

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
STL100N10F7	100 V, 0.0095 Ω R_DS(on), 100 A I_D, PowerFLAT 5x6 package, lower R_DS(on) but higher Q_g (55 nC)	Better conduction efficiency at high current; less suitable for high-frequency switching due to gate charge	Prefer for low-duty-cycle, high-current loads where thermal mass dominates; avoid in >100 kHz SMPS.
IRLR024N	55 V, 0.075 Ω R_DS(on), 13 A I_D, same D-Pak package, lower voltage rating	Not suitable for 48 V systems; limited to 24 V or lower automotive rails	Select only for legacy 12 V/24 V designs requiring identical footprint and lower cost; verify system voltage margin.

Compared with STL100N10F7 and IRLR024N, AUIRLR120N uniquely balances 100 V rating, logic-level drive, and moderate gate charge for mid-frequency (50–200 kHz), medium-current (5–10 A) automotive power stages where thermal reliability and avalanche safety are prioritized over ultra-low R_DS(on).

Availability

AUIRLR120N is available at Aetrix Electronics and suitable for engine control units, LED lighting drivers, DC-DC converters, and body control modules requiring stable component supply across extended automotive product lifecycles.

Supply support for AUIRLR120N 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 security solutions, with global manufacturing and quality certification aligned to IATF 16949.

AUIRLR120N belongs to Infineon's automotive-grade HEXFET® Power MOSFET product line, engineered specifically for high-reliability, high-temperature switching in engine, chassis, and lighting control systems.

FAQ

Is AUIRLR120N pin-compatible with standard D-Pak discrete MOSFETs?

Yes-AUIRLR120N uses the industry-standard D-Pak (TO-252AA) outline with Drain (tab), Source, and Gate pins in the same mechanical configuration as IRLR024N, IRLR3705, and other 3-lead D-Pak MOSFETs. The exposed drain tab must be soldered to a thermal pad per Infineon's recommended footprint in AN-994.

What is the maximum allowable gate-to-source voltage for AUIRLR120N?

The absolute maximum V_GS is ±16 V per the datasheet. Operation beyond this risks irreversible gate oxide damage. For robust design, gate drive should be clamped to ≤±12 V using Zener diodes or dedicated gate drivers with rail-limited outputs.

Does AUIRLR120N require a gate resistor for stability?

Yes-a series gate resistor (typically 10–47 Ω) is required to dampen parasitic oscillation caused by gate-drain capacitance (C_rss = 50 pF) and PCB trace inductance. Without it, ringing during switching can exceed V_GS ratings and cause erratic turn-on/turn-off behavior.

Can AUIRLR120N replace IRLR120N in existing designs?

Yes-with caveats: AUIRLR120N is the automotive-qualified (AEC-Q101) version of IRLR120N, sharing identical electrical specs and package. It adds enhanced process controls, extended temperature range (−55°C to +175°C), and full traceability-making it suitable for drop-in replacement where automotive reliability is mandated.

AUIRLR120N 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):: 100 V

Current - Continuous Drain (Id) @ 25°C:: 10A (Tc)

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

Rds On (Max) @ Id, Vgs:: 185mOhm @ 6A, 10V

Vgs(th) (Max) @ Id:: 2V @ 250µA

Gate Charge (Qg) (Max) @ Vgs:: 20 nC @ 5 V

Vgs (Max):: ±16V

Input Capacitance (Ciss) (Max) @ Vds:: 440 pF @ 25 V

FET Feature:: -

Power Dissipation (Max):: 48W (Tc)

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

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

AUIRLR120N FAQ

1.How can I place an order for AUIRLR120N through Aetrix?

Please submit a Request for Quotation (RFQ) for AUIRLR120N 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 AUIRLR120N reliable?

The price and inventory of AUIRLR120N are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AUIRLR120N is usually 5 days.

3.What payment methods are accepted for AUIRLR120N?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AUIRLR120N transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AUIRLR120N?

AUIRLR120N orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AUIRLR120N 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 AUIRLR120N?

For technical support, including AUIRLR120N datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AUIRLR120N requirements.

6.How does Aetrix verify that AUIRLR120N is sourced from the original manufacturer or authorized distributors?

All AUIRLR120N 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 AUIRLR120N meets industry standards.

7.What is the process for return or replacement of AUIRLR120N?

All AUIRLR120N units undergo pre-shipment inspection (PSI). If there is an issue with AUIRLR120N, 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 AUIRLR120N part is unused and in its original packaging.

Return procedure for AUIRLR120N:

1.Submit a request within 90 days.

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

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