Infineon Technologies AUIRFL024NTR

Overview

AUIRFL024NTR from Infineon Technologies is an automotive-grade N-channel enhancement-mode HEXFET® Power MOSFET in SOT-223 package, rated for 55 V V(BR)DSS, 75 mΩ RDS(on) max at VGS = 10 V, 2.8 A continuous drain current at TA = 25°C, and qualified to AEC-Q101 standards. It serves as a high-reliability low-side switch in 12 V automotive power distribution systems including body control modules and lighting drivers.

For engineers reviewing the AUIRFL024NTR datasheet, AUIRFL024NTR pinout, AUIRFL024NTR application, or AUIRFL024NTR equivalent, key selection criteria include its 150°C junction temperature rating, fully avalanche-rated operation, dynamic dV/dt capability, and SOT-223 thermal performance under PCB-mount conditions.

Technical Context

This MOSFET employs Infineon's advanced planar silicon process to achieve low on-resistance per die area while maintaining rugged unclamped inductive switching behavior. Its gate charge profile (Qg = 18.3 nC, Qgd = 7.7 nC) supports fast turn-on/turn-off with controlled dv/dt, and the integrated body diode exhibits trr = 35–53 ns and Qrr = 50–75 nC under defined test conditions.

The device is characterized for operation across –55°C to +150°C junction temperature range, with thermal resistance RθJA = 90–120°C/W (PCB mount, still air), and supports repetitive avalanche up to Tjmax. Its ±20 V gate-to-source voltage rating and 2.0–4.0 V threshold enable robust drive compatibility with standard 3.3 V/5 V/12 V logic interfaces.

Key Specifications

Pinout & Package

SOT-223 package with exposed drain pad for enhanced thermal dissipation; three-terminal configuration optimized for surface-mount power switching on standard FR-4 PCBs.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STL130N5LF6AG and NTMFS4C09NT1G, the AUIRFL024NTR offers superior thermal robustness in legacy SOT-223 layouts, guaranteed avalanche capability for inductive loads, and full AEC-Q101 compliance-making it optimal for production automotive designs requiring proven field reliability without board rework.

Availability

AUIRFL024NTR is available at Aetrix Electronics and suitable for automotive body electronics, LED lighting control, engine management subsystems, and HVAC blower motor drives requiring stable component supply and long-term lifecycle assurance.

Supply support for AUIRFL024NTR 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 solutions, with global manufacturing and quality certification aligned to ISO/TS 16949.

The AUIRFL024NTR belongs to Infineon's automotive-qualified HEXFET® Power MOSFET product line, engineered specifically for high-reliability 12 V vehicle electrical systems demanding ruggedness, thermal stability, and AEC-Q101 compliance.

FAQ

Is AUIRFL024NTR suitable for hot-swap applications?

Yes. Its dynamic dV/dt rating and gate threshold voltage range (2.0–4.0 V) provide immunity to false turn-on during live-insertion events. The device has been validated for use in automotive power distribution units where modules are connected/disconnected under bias, provided gate drive sequencing and external current limiting are implemented per design guidelines.

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

For optimal RθJA ≤ 90°C/W, Infineon recommends ≥ 200 mm² of 2 oz copper connected directly to the drain tab via ≥ 6 thermal vias (0.3 mm diameter, spaced ≤ 2 mm apart). This layout achieves near-datasheet thermal performance in still-air conditions and supports continuous 2.8 A operation at TA = 85°C.

Does AUIRFL024NTR require a gate resistor in standard switching applications?

Yes. A series gate resistor (typically 10–47 Ω) is required to dampen ringing, limit peak gate current, and control switching speed. Without it, the 18.3 nC total gate charge and low output impedance of typical drivers can cause overshoot, shoot-through risk in half-bridges, and EMI exceeding CISPR 25 Class 5 limits in automotive environments.

Can AUIRFL024NTR replace older IRFL024N parts in existing designs?

Yes, with verification. AUIRFL024NTR is the automotive-qualified, lead-free, RoHS-compliant successor to IRFL024N. Electrical parameters are identical, and SOT-223 mechanical dimensions match. However, requalification per AEC-Q101 and updated thermal derating curves must be confirmed for safety-critical deployments.