IRF4905PBF P-Channel MOSFET IC: The Rugged −55V, −74A Switch for High-Current Designs

бойынша NBTC

қосулы Октябрь 19, 2026

SEO Title: IRF4905PBF P-Channel MOSFET IC in Stock | NBTC

Meta Description: IRF4905PBF P-Channel MOSFET IC in stock at NBTC — Infineon −55V, −74A HEXFET in TO-220AB. Genuine parts, fast shipping. BOM kitting made simple.

Primary Keyword: IRF4905PBF P-Channel MOSFET IC

Secondary Keywords: IRF4905, IRF4905PBF datasheet, P-channel HEXFET, −55V P-channel MOSFET, 20 mΩ RDS(on), TO-220AB MOSFET, MOSFET IC in stock, BOM kitting service

Introduction

Choosing the IRF4905PBF P-Channel MOSFET IC usually comes down to one requirement: switching a heavy load on the high side of a rail without adding a second supply or a complex gate-drive circuit. This part does exactly that, and has done so in industrial designs for years.

Made by Infineon Technologies as part of the long-running HEXFET family, it packs a −55 V, −74 A rating and a maximum on-resistance of just 20 mΩ into a standard TO-220AB package. And for teams that need it now, NBTC holds a large in-stock quantity of the genuine article.

What Is the IRF4905PBF?

The IRF4905PBF is a single P-channel enhancement-mode power MOSFET supplied in a through-hole TO-220AB package. The “PBF” suffix means lead-free, and the device is RoHS compliant and halogen-free.

Its significance is topological. Because it is a P-channel device, it can sit in the positive rail with its source tied to the supply and be switched by pulling the gate toward ground — the classic high-side switch used for load switching, reverse-battery protection and power-path control. Where an N-channel part would need a charge pump above the rail, this one works directly.

With a junction-to-case thermal resistance of 0.75 K/W, the TO-220AB package dissipates up to roughly 50 W in commercial and industrial equipment, and accepts a heatsink without special tooling.

Key Specifications of the IRF4905PBF

Parameter	Техникалық сипаттама
Өндіруші	Infineon Technologies (HEXFET series)
Device type	Single P-channel power MOSFET
Drain-source voltage (VDS)	−55 V
Continuous drain current (ID)	−74 A @ TC = 25 °C; −52 A @ TC = 100 °C
Pulsed drain current (IDM)	−260 A
RDS(on) max	20 mΩ @ VGS = −10 V
Gate threshold voltage (VGS(th))	−2 V to −4 V
Gate-source voltage (VGS) max	±20 V
Gate charge (QG)	120 nC typ., 180 nC max @ 10 V
Input capacitance (Ciss)	3,400 pF @ 25 V
Power dissipation (PD)	200 W @ TC = 25 °C
Thermal resistance (RθJC)	0.75 K/W max
Operating junction temperature	−55 °C to +175 °C
Пакет	TO-220AB, through-hole
Қаптама	Tube, 50 pieces per tube
Compliance	RoHS compliant, lead-free, halogen-free
Export classification	ECCN EAR99

Why Engineers Specify the IRF4905PBF

1. Low on-resistance. At 20 mΩ maximum, conduction losses stay modest even at tens of amps.

2. −74 A continuous current. It drives motors, solenoids, high-power LED strings and battery loads that would overstress smaller parts.

3. Fully avalanche rated. It absorbs the inductive-kick events typical of motor and relay circuits without an external clamp.

4. Predictable switching. A 3,400 pF input capacitance and 180 nC gate charge make gate-drive design straightforward, with reference SPICE and Saber models freely available.

5. A 175 °C junction temperature and long-life availability. The part is Active with no end-of-life notice — a safe choice for multi-year production.

Typical Applications

High-side load switching and power-path control in 12 V and 24 V systems
Motor control — brushed DC and stepper drivers, automotive actuators
DC-DC converters and synchronous rectification stages
Battery protection and reverse-polarity protection circuits
Industrial power supplies, inverters and UPS front ends

Stock, Packaging and Lead Time

Ordering the IRF4905PBF from the factory means a lead time measured in weeks to months — distributor listings currently quote anywhere from 8 to 25 weeks.

That gap is where NBTC earns its place. As a one-stop electronic components platform with massive in-stock inventory, NBTC ships the IRF4905PBF in large ready-to-go quantities — full tubes for production, or smaller counts for prototyping and repair.

Why Buy Your IRF4905PBF from NBTC

Large in-stock quantity of the IRF4905PBF. Genuine Infineon parts, correctly marked and factory packaged, available today rather than promised for next quarter.

One-stop sourcing for the full BOM. Gate drivers, Schottky diodes, capacitors and connectors usually follow the MOSFET — and one purchase order covers the whole kit.

BOM kitting made simple. Send your bill of materials and we consolidate the line items, match your quantities and hand over a single verified kit.

Massive in-stock inventory — buy electronic components at nbtcminer.com, and make BOM kitting simpler. From a single MOSFET to a complete production kit, the parts are on the shelf and ready to ship.

Frequently Asked Questions

Is the IRF4905PBF P-channel or N-channel? P-channel — a single enhancement-mode power MOSFET.

What are its ratings? −55 V drain-source and −74 A continuous drain current at 25 °C case temperature.

What is the on-resistance? 20 mΩ maximum at VGS = −10 V.

What package does it use? A through-hole TO-220AB, supplied in tubes of 50 pieces.

Does NBTC have the IRF4905PBF in stock? Yes — large in-stock quantities, shipped quickly. Visit nbtcminer.com or send your BOM for a quote.

Final Thoughts

The IRF4905PBF P-Channel MOSFET IC remains a reference part for high-side switching: −55 V, −74 A, 20 mΩ, avalanche rated and rated to 175 °C, in a package every assembly house knows how to handle.

Getting the part shouldn’t be the hard part. NBTC removes that bottleneck with large in-stock inventory of genuine Infineon devices.

Ready to build? Massive in-stock inventory — buy electronic components at nbtcminer.com and make BOM kitting simpler. Send your BOM for the IRF4905PBF today.