Infineon Technologies IRFI4019HG-117P

Overview

IRFI4019HG-117P from Infineon Technologies is a discrete power MOSFET half-bridge module in TO-220 Full-Pak 5-pin package, integrating high-side and low-side N-channel switches for Class-D audio amplifiers. It delivers up to 200W per channel into 8Ω load, features 80 mΩ R_DS(on) @ 10V, 13 nC total gate charge, and optimized body-diode Q_rr (140–210 nC) to reduce THD and EMI.

For engineers reviewing the IRFI4019HG-117P datasheet, IRFI4019HG-117P pinout, IRFI4019HG-117P application, or IRFI4019HG-117P equivalent, key selection criteria include half-bridge integration, low Q_sw (4.1 nC), internal gate resistance (2.5 Ω), thermal resistance R_θJC = 6.9 °C/W, and Class-D–specific diode recovery performance.

Technical Context

This device implements a monolithic half-bridge topology with isolated source terminals (S1, S2) and separate gate inputs (G1, G2), enabling independent control of high-side and low-side switches. Its 150 V V_DS rating and 150 °C T_J(max) support robust operation in high-power audio output stages.

The integrated design minimizes parasitic inductance (L_D = 4.5 nH, L_S = 7.5 nH) and leverages optimized gate charge partitioning (Q_gs1 = 3.3 nC, Q_gd = 3.9 nC) to ensure fast, low-loss switching at typical Class-D frequencies (250–500 kHz).

Key Specifications

Pinout & Package

IRFI4019HG-117P uses a TO-220 Full-Pak 5-pin package with isolated source leads and dedicated gate/drain connections for half-bridge operation. The metal tab is electrically connected to the high-side drain (D1) and serves as the primary thermal path.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STW56N60M2 and IXFH30N60P, IRFI4019HG-117P uniquely integrates matched half-bridge switches with Class-D–specific parameters (low Q_rr, split gate charge, isolated sources), eliminating layout-dependent timing skew and reducing component count by 50% in audio output stages.

Availability

IRFI4019HG-117P is available at Aetrix Electronics and suitable for home audio amplifiers, automotive infotainment systems, and professional sound equipment requiring stable component supply and long-term production continuity.

Supply support for IRFI4019HG-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 R&D and manufacturing infrastructure.

This part belongs to Infineon's HEXFET® Power MOSFET product line, engineered specifically for high-efficiency, high-frequency switching applications including Class-D audio, where low conduction/switching losses and controlled diode recovery are critical.

FAQ

What is the maximum recommended gate drive voltage for IRFI4019HG-117P?

The absolute maximum V_GS rating is ±20 V, but the device is characterized and optimized for 10 V gate drive. Operating above 12 V yields diminishing R_DS(on) improvement while increasing gate oxide stress and Q_g-related losses. For reliability and thermal margin, 10 V is the recommended nominal drive level.

Can IRFI4019HG-117P be used in synchronous rectification topologies?

No - it is not designed for synchronous rectification. Its body diode is optimized for Class-D freewheeling (low Q_rr, fast t_rr), but lacks the low forward voltage and bidirectional current capability required for SR control. Dedicated SR controllers paired with logic-level MOSFETs are required instead.

How does the TO-220 Full-Pak 5-pin package differ from standard TO-220AB?

The Full-Pak variant features an insulated plastic body over the metal tab, allowing the drain (D1) to remain electrically isolated from the heatsink. Standard TO-220AB exposes the drain on the tab, requiring insulating hardware. This eliminates mounting isolation components and improves thermal reliability in high-density layouts.

Is IRFI4019HG-117P qualified for automotive applications?

No - the datasheet explicitly states qualification for the Consumer market only. It does not meet AEC-Q101 stress test requirements for temperature cycling, humidity, or mechanical shock. Automotive designs require parts such as Infineon's AUIRF7601 or similar AEC-Q101–qualified half-bridge modules.