IRFR9024NTRPBF Guide: 55V 11A P-Channel HEXFET MOSFET Specs, Pinout, Alternatives & Design Tips

What Is the IRFR9024NTRPBF and Why Do Engineers Choose It?

The IRFR9024NTRPBF is Infineon's fifth-generation P-Channel HEXFET power MOSFET rated for -55V drain-source voltage (VDS) and -11A continuous drain current at a 25C case temperature, packaged in a surface-mount TO-252AA (DPAK) with 3 pins. Its maximum on-resistance is 175 mOhm at VGS = -10V, total gate charge is a typical 12.7 nC, and maximum power dissipation is 38W at Tc = 25C. The junction temperature range spans -55C to +175C, and the part is RoHS compliant with an active lifecycle status. As of 2026-09-14, the IRFR9024NTRPBF is widely available: XAIPART lists IRFR9024NTRPBF product page stock at 99,999 units with MOQ 1, priced from $0.71 (qty 1) down to $0.17 (qty 3000) as of 2026-09-14. Because it is a P-Channel device, it simplifies high-side load switching by eliminating the charge pump or bootstrap supply an N-Channel high-side switch would require.

How Do You Design In the IRFR9024NTRPBF Correctly?

Design with the IRFR9024NTRPBF by focusing on three areas: gate drive, thermal layout, and switching-loop integrity.

Gate Drive

Apply at least -10V of gate-source drive for full enhancement; the RDS(on) maximum of 175 mOhm is specified at VGS = -10V. The absolute maximum VGS is ±20V, so never exceed that limit. Place a 100k pull-up resistor from gate to source to prevent accidental turn-on during power-up. The 12.7 nC typical total gate charge supports switching up to several hundred kHz, making the part suitable for PWM up to roughly 100 kHz with low gate-drive loss.

Thermal Design

The TO-252AA tab is the drain connection and must be soldered to a copper pour of at least 1 square inch to realize the rated 38W dissipation at Tc = 25C. The continuous current rating of -11A derates linearly as case temperature rises toward the +175C maximum junction. Verify conduction losses: at full 11A load, I²R loss reaches roughly 21W (11² × 0.175), so most designs must operate well below full current or provide substantial copper area.

Layout

Keep the drain-source dv/dt loop compact to limit ringing. For inductive loads, the avalanche-rated body diode helps, but add a TVS clamp on the drain when the load includes significant inductance, and use a flyback diode across inductive loads such as motors and solenoids.

Where Is the IRFR9024NTRPBF Used? Verified Application Scenarios

The verified application data covers six scenarios: high-side load switching on 24V industrial buses (where -55V VDS exceeds the 30V worst-case bus including transients); battery protection and OR-ing in portable equipment (about 2.1W conduction loss at full load, far below a Schottky-diode drop); DC fan and small motor PWM speed control (about 0.4W conduction loss at 5A and 50% duty cycle); power-rail switching in audio amplifiers with drop-in DPAK footprint compatibility; polarity-reversal protection on USB and barrel-jack inputs (under 100 mV drop at 5A, saving up to 700 mV versus a Schottky); and 12V automotive lighting and accessory loads, where -55V VDS provides margin above the 16V load-dump transient specified by ISO 7637-2.

What Are the IRFR9024NTRPBF Specs and Pinout?

The verified specifications are: P-Channel polarity; VDS = -55V; continuous drain current = -11A (Tc=25C); VGS = ±20V; RDS(on) max = 175 mOhm at VGS = -10V; total gate charge = 12.7 nC; max power dissipation = 38W (Tc=25C); junction temperature = -55C to +175C; TO-252AA (DPAK) package; surface mount; 3 pins; HEXFET Gen 5 technology; RoHS compliant. [DATA_NEEDED: pulsed drain current] and [DATA_NEEDED: VGS(th) typical] are not listed in the verified data — consult the official datasheet for these parameters before finalizing gate-drive thresholds.

The DPAK pinout is the industry standard: Pin 1 = Gate, Pin 2 = Drain (electrically tied to the metal tab), Pin 3 = Source. Soldering the tab to a copper pour provides both heat sinking and the drain electrical connection.

Which Alternatives Can Replace the IRFR9024NTRPBF?

Verified alternatives in the database are limited, so the comparison below covers only data provided. The closest drop-in is the IRFR9024NPBF (non-tape-and-reel packaging variant of the identical die). [DATA_NEEDED: full parametric data for cross-brand equivalents]

Warning from the verified FAQ: the IRF7205TRPBF is NOT a drop-in replacement — it is rated only -30V VDS versus -55V, so it would suffer avalanche breakdown on 24V or 36V buses. For higher-current needs in the same DPAK footprint, the FAQ notes the IRFR5505TRPBF is rated -55V/-18A/110 mOhm, giving 64% more current capacity and 37% lower on-resistance, but choose the IRFR9024NTRPBF when its lower cost and modest current rating suffice. Always verify VGS(th) and avalanche ratings against your gate-drive design.

What Is the Market Position and Supply Situation for the IRFR9024NTRPBF?

Lifecycle status is active, and supply is healthy. As of 2026-09-14, XAIPART lists 99,999 units in stock with MOQ 1 and tiered pricing: $0.71 (qty ≥1), $0.55 (≥10), $0.38 (≥100), $0.27 (≥500), $0.22 (≥1000), and $0.17 (≥3000). Verified FAQ data reports availability at DigiKey ('ships today' as of 2026-09-10), Mouser, LCSC (typical 3–7 day international lead time), and an Octopart aggregator showing 11 active distributor sources. No extended lead times have been reported. [DATA_NEEDED: end-of-life or last-time-buy notices — none provided in verified data]

What Should Buyers Watch Next for the IRFR9024NTRPBF?

Watch three things anchored to verified specs. First, thermal margins: with 175 mOhm RDS(on) and roughly 21W conduction loss at full 11A load, rising ambient temperatures and reduced copper area will force derating; plan layouts with at least 1 square inch of copper under the tab. Second, voltage headroom: the -55V VDS comfortably covers 12V, 24V, 36V, and 48V bus transients, but never substitute a lower-VDS part such as the -30V IRF7205TRPBF in these designs. Third, pricing: the $0.17 unit price at qty ≥3000 (as of 2026-09-14) versus $0.71 at qty 1 rewards consolidating orders; with 99,999 units in stock at XAIPART and 11 active distributor sources, supply risk is low, but monitor tier pricing before large buys. Finally, before committing a design, download the official datasheet PDF from Infineon and fill in the [DATA_NEEDED: VGS(th) typical] and [DATA_NEEDED: pulsed drain current] parameters not present in this article's verified dataset.