Infineon Technologies AUIRLR014N

Overview

AUIRLR014N from Infineon is an automotive-grade N-channel D-Pak (TO-252AA) HEXFET® Power MOSFET with 55 V V_DS, 0.14 Ω R_DS(on) @ 10 V_GS, and 10 A continuous drain current at T_C = 25°C. It serves as a high-efficiency, logic-level-controlled power switch in engine control modules, body electronics, and DC-DC converters where ruggedness, fast switching, and 175°C junction operation are required.

For engineers reviewing the AUIRLR014N datasheet, AUIRLR014N pinout, AUIRLR014N application, or AUIRLR014N equivalent, key selection criteria include its 4.5 V logic-level gate drive compatibility, fully avalanche-rated structure, dynamic dV/dt rating of 5.0 V/ns, and automotive qualification per AEC-Q101 standards.

Technical Context

This N-channel enhancement-mode MOSFET uses advanced planar silicon processing to achieve low on-resistance per die area while maintaining robust unclamped inductive switching capability. Its gate threshold voltage (1.0–3.0 V) enables direct interfacing with 3.3 V and 5 V microcontrollers without level-shifting circuitry.

The device features integrated body diode with 37–56 ns reverse recovery time and 48–71 nC Q_rr, supporting synchronous rectification and freewheeling in high-frequency buck converters. Thermal resistance R_θJC = 5.3 °C/W supports high-power density mounting on PCBs with minimal heatsinking.

Key Specifications

Pinout & Package

Package: D-Pak (TO-252AA), surface-mount, single-die configuration with exposed drain pad for thermal conduction. Standard footprint per IR application note AN-994.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STL10DN5LF3 and IRLR024N, the AUIRLR014N uniquely combines AEC-Q101 qualification, 175°C operation, and full avalanche capability-making it the only option validated for safety-critical automotive power switching where thermal and transient robustness are mandatory.

Availability

AUIRLR014N is available at Aetrix Electronics and suitable for engine control units, body control modules, and 48 V mild hybrid DC-DC converters requiring stable component supply across extended automotive production lifecycles.

Supply support for AUIRLR014N 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 quality certification infrastructure.

The AUIRLR014N belongs to Infineon's automotive-qualified HEXFET® Power MOSFET product line, engineered specifically for high-reliability 12 V/24 V/48 V vehicle subsystems demanding robustness against load dump, reverse battery, and thermal cycling.

FAQ

Is AUIRLR014N suitable for high-frequency PWM applications above 100 kHz?

Yes. With t_r = 47 ns, t_f = 23 ns, and Q_g = 7.9 nC, the AUIRLR014N supports clean switching at 200 kHz in buck converters when paired with a 1–2 A gate driver. Its low C_iss (265 pF) and Crss (38 pF) minimize Miller-effect delays and EMI generation in hard-switched topologies.

What is the maximum recommended PCB copper area for thermal performance?

Per Infineon AN-994, a minimum 1" × 1" (25.4 mm × 25.4 mm) FR-4 copper pour connected to the drain tab via ≥4 thermal vias (0.3 mm diameter, spaced ≤2 mm apart) achieves the specified R_θJC = 5.3 °C/W. Larger copper areas further reduce case temperature under 10 A continuous load.

Does AUIRLR014N require external gate resistors for automotive EMI compliance?

Yes. A 10–22 Ω series gate resistor is recommended to damp ringing caused by LS (7.5 nH) and LD (4.5 nH) parasitics, especially in high-di/dt motor drive applications. This suppresses radiated emissions above 30 MHz while maintaining t_f < 30 ns for efficient switching.

Can AUIRLR014N replace IRLR014N in existing designs?

Yes, with validation. The AUIRLR014N shares identical pinout, R_DS(on), and V_DS ratings but adds AEC-Q101 qualification, 175°C rating, and enhanced avalanche capability. Layout and gate drive remain unchanged, though thermal margin improves due to tighter process control and higher T_Jmax.