Infineon Technologies IRFI4024H-117P

Overview

IRFI4024H-117P from Infineon Technologies (formerly International Rectifier) is a discrete power MOSFET half-bridge module designed for Class-D audio amplifier output stages. It integrates two N-channel 55 V, 48 mΩ R_DS(on) MOSFETs in a single TO-220 Full-Pak 5-pin package, with typ. 8.9 nC total gate charge and 11 nC reverse recovery charge, enabling high-efficiency 100 W/channel operation into 6 Ω loads.

For engineers reviewing the IRFI4024H-117P datasheet, IRFI4024H-117P pinout, IRFI4024H-117P application, or IRFI4024H-117P equivalent, key selection criteria include low Q_g/Q_sw for THD reduction, optimized body diode Q_rr for EMI control, thermal resistance of 9.21 °C/W (Junction-to-Case), and lead-free TO-220 Full-Pak mechanical compatibility with high-power audio PCB layouts.

Technical Context

This half-bridge device implements two matched N-channel enhancement-mode MOSFETs with integrated source and drain connections shared across a common thermal pad. Its internal gate resistance of 2.3 Ω damps ringing without external gate resistors, while low Q_rr (11–17 nC) and fast trr (17–26 ns) minimize body-diode commutation losses during PWM switching in full-bridge Class-D topologies.

The device uses advanced silicon process technology to achieve 48 mΩ R_DS(on) at V_GS = 10 V and TJ = 25°C, with normalized on-resistance drift of ≤2× over –55°C to +150°C. Thermal design is supported by a dedicated case-mounting interface (6–32 or M3 screw, 10 lbf·in torque) and junction-to-case thermal resistance of 9.21 °C/W under steady-state conduction.

Key Specifications

Pinout & Package

IRFI4024H-117P uses a TO-220 Full-Pak 5-pin package with isolated tab (non-electrical), lead-form option 117. The package features dual-source and dual-drain terminals for half-bridge layout symmetry and enhanced thermal transfer via case-mounting screw.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar half-bridge MOSFET applications.

Compared with STW48N65M5 and IXFH40N50P, IRFI4024H-117P uniquely delivers Class-D-optimized Q_rr, matched half-bridge pairing, and TO-220 Full-Pak thermal performance-making it irreplaceable for high-fidelity, space-constrained audio output stages.

Availability

IRFI4024H-117P is available at Aetrix Electronics and suitable for home audio amplifiers, automotive infotainment systems, professional PA modules, and active speaker crossovers requiring stable component supply and consistent parametric matching across production batches.

Supply support for IRFI4024H-117P 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, and industrial control ICs and discrete devices, with global manufacturing and quality certification to AEC-Q101 and IATF 16949 standards.

The IRFI4024H-117P belongs to Infineon's "HEXFET® Audio Power MOSFET" product line, engineered specifically for high-efficiency, low-distortion Class-D audio amplifier output stages where thermal robustness and switching fidelity are critical.

FAQ

What is the maximum continuous drain current rating for IRFI4024H-117P at 100°C case temperature?

The maximum continuous drain current is 11 A at T_C = 100°C with V_GS = 10 V, as specified in the Absolute Maximum Ratings table. This rating assumes proper heatsinking to maintain case temperature and accounts for R_DS(on) increase with junction temperature.

Can IRFI4024H-117P be used in synchronous rectification applications?

No - IRFI4024H-117P is configured as a half-bridge with fixed high-side/low-side topology and non-isolated source terminals. Its body diode characteristics and gate drive requirements are optimized for Class-D switching, not for synchronous rectifier control timing or bidirectional current handling.

Is the TO-220 Full-Pak 5-pin package electrically insulated?

Yes - the metal tab is electrically isolated from all internal terminals and serves solely as a thermal interface. Pin-to-tab isolation voltage exceeds 2500 V RMS, enabling safe mounting to grounded heatsinks without additional insulation hardware.

What is the recommended gate resistor value when driving IRFI4024H-117P?

None required - the device integrates 2.3 Ω internal gate resistance per FET. External gate resistors are unnecessary unless fine-tuning of dv/dt or EMI is needed; if added, values ≥1 Ω may be used to further damp ringing without compromising switching speed.