Infineon Technologies IRF9392PBF

Overview

IRF9392PBF from Infineon Technologies (formerly International Rectifier) is a P-channel enhancement-mode HEXFET^® Power MOSFET in SO-8 package, rated for -30 V V_DS, 17.5 mΩ R_DS(on) at -10 V V_GS, and -9.8 A continuous drain current at 25°C. It integrates a robust body diode and supports unclamped inductive switching with 500 mJ single-pulse avalanche energy, commonly used in high-side load switching and DC-DC synchronous rectification.

For engineers reviewing the IRF9392PBF datasheet, IRF9392PBF pinout, IRF9392PBF application, or IRF9392PBF equivalent, key selection criteria include verified -30 V breakdown voltage, gate-threshold range of -1.3 V to -2.4 V, linear derating factor of 0.02 W/°C above 70°C ambient, and SO-8 thermal performance validated on 1-inch² copper board.

Technical Context

This device operates as a voltage-controlled power switch with negative gate drive logic: conduction initiates when V_GS falls below threshold (typically -1.9 V), and full enhancement occurs at -10 V. Its low R_DS(on) enables efficient high-side switching in 3.3 V–5 V logic-driven systems where gate drive voltage margin is constrained.

Thermal design relies on junction-to-ambient resistance of 50 °C/W (free-air) and 20 °C/W (junction-to-drain lead), with safe operating area limited by R_DS(on) at DC and pulse widths up to 100 µs. Avalanche capability is characterized at I_AS = -7.8 A with L = 3.3 mH and R_G = 25 Ω.

Key Specifications

Pinout & Package

IRF9392PBF uses the industry-standard SO-8 surface-mount package (JEDEC MS-012AC), with 1.27 mm pitch, 5.0 mm × 6.0 mm body, and exposed drain pad for enhanced thermal conduction. Pin 1 is gate (G), Pin 2 is source (S), Pin 3 is source (S), Pin 4 is source (S), Pin 5 is drain (D), Pin 6 is drain (D), Pin 7 is drain (D), Pin 8 is drain (D).

Key Features

Applications

Equivalent & Alternatives

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

Compared with Si2305DS-T1-E3 and IPD95R1K2P7ATMA1, IRF9392PBF uniquely balances -30 V rating, sub-20 mΩ on-resistance, SO-8 footprint, and proven avalanche ruggedness-making it optimal for compact, high-efficiency 5–12 V power management where thermal headroom and layout simplicity are critical.

Availability

IRF9392PBF is available at Aetrix Electronics and suitable for high-side load switching, synchronous buck conversion, hot-swap control, and reverse polarity protection requiring stable component supply and JEDEC-qualified reliability.

Supply support for IRF9392PBF 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 AG is a German semiconductor manufacturer specializing in power management, sensor, and automotive ICs, with global manufacturing and qualification infrastructure.

The IRF9392PBF belongs to the HEXFET^® Power MOSFET product line, engineered for high-efficiency, high-reliability DC power switching in consumer, industrial, and computing applications where SO-8 integration and avalanche tolerance are essential.

FAQ

What is the maximum allowable gate-to-source voltage for IRF9392PBF?

The absolute maximum V_GS is ±25 V, confirmed in the Absolute Maximum Ratings table. Operation beyond this risks irreversible gate oxide damage. For reliable long-term use, gate drive should be clamped to -20 V maximum under transient conditions and maintained within -10 V to -4.5 V for normal switching to balance R_DS(on) and gate charge.

Does IRF9392PBF require a gate resistor for safe operation?

Yes-a gate resistor is required to control dV/dt and prevent oscillation. Typical values range from 6.8 Ω to 25 Ω, as validated in the unclamped inductive test circuit (Fig 18a). Lower values increase switching speed but risk ringing; higher values reduce EMI but extend turn-on delay (t_d(on) = 15 ns typical) and increase switching losses.

Can IRF9392PBF be used in parallel configurations?

Yes, but with strict layout symmetry: matched gate trace lengths, Kelvin source connections, and individual gate resistors. The positive R_DS(on) temperature coefficient (0.021 V/°C) provides inherent current sharing above 100°C, but thermal coupling between devices must be minimized to avoid thermal runaway at lower temperatures.

Is the body diode in IRF9392PBF suitable for continuous conduction mode (CCM) operation?

Yes-the body diode is rated for -2.5 A continuous source current and -80 A pulsed, with t_rr = 36–54 ns and Q_rr = 20–30 nC. In CCM buck converters, it conducts during the high-side switch off-time; its low reverse recovery charge minimizes voltage spikes and reduces stress on the high-side FET during commutation.