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Home > Products > Discrete Semiconductor Products > Transistors > FETs, MOSFETs > FETs, MOSFETs

Infineon Technologies IRL540NLPBF

Name: IRL540NLPBF
Brand: Infineon Technologies
SKU: IRL540NLPBF
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: IRL540NLPBF

Manufacturer:: Infineon Technologies

Category:: FETs, MOSFETs

Package:: TO-262-3 Long Leads, I2PAK, TO-262AA

Datasheet:: IRL540NLPBF.pdf

Description:: MOSFET N-CH 100V 36A TO262

Quantity:: RFQ Add To RFQ list

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Product details

Overview

IRL540NLPBF from Infineon Technologies is a logic-level N-channel MOSFET in D2PAK (TO-263) package, rated for 100 V V_DS, 36 A I_D (T_C = 25°C), and 5.3 mΩ R_DS(on) at V_GS = 10 V. It serves as a high-current switching element in DC-DC converters, motor drive half-bridges, and industrial power supplies.

For engineers reviewing the IRL540NLPBF datasheet, IRL540NLPBF pinout, IRL540NLPBF application, or IRL540NLPBF equivalent, key selection criteria include its low gate threshold (V_GS(th) = 1.0–2.0 V), fast turn-on/turn-off times (t_on = 35 ns, t_off = 85 ns), and enhanced thermal performance in surface-mount power applications.

Technical Context

This MOSFET uses planar silicon technology with optimized channel geometry to achieve low on-resistance while maintaining robust avalanche capability (E_AS = 270 mJ). Its logic-level gate drive enables direct interfacing with 3.3 V and 5 V microcontrollers without level-shifting circuitry.

The device features integrated body diode with soft recovery characteristics (t_rr = 120 ns), reducing switching noise in hard-switched topologies. Thermal resistance R_θJC is specified at 0.55°C/W, supporting high-power density PCB layouts when mounted on copper-filled thermal pads.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	100 V - Maximum drain-source blocking voltage for use in 48 V bus and 100 V flyback primary-side switching.
R_DS(on) @ V_GS = 10 V	5.3 mΩ - Enables <1.9 W conduction loss at 19.5 A continuous drain current in thermally optimized layout.
I_D (T_C = 25°C)	36 A - Continuous drain current rating under heatsink-cooled conditions, suitable for high-duty-cycle SMPS outputs.
V_GS(th)	1.0–2.0 V - Guaranteed turn-on with standard logic-level MCU GPIOs, eliminating need for gate driver ICs in low-speed control.
t_on/t_off	35 ns / 85 ns - Supports PWM operation up to 500 kHz with minimal switching loss in synchronous buck stages.
Q_g	71 nC - Gate charge value defining required drive strength; compatible with common 1-A peak gate drivers like IR2110 or UCC27531.

Pinout & Package

D2PAK (TO-263) surface-mount package with exposed drain pad for thermal enhancement; 3-pin configuration (G-D-S) with drain connected to backside metal tab.

Pin/Terminal	Circuit Role	Design Meaning
Gate (G)	Control input	Receives logic-level voltage to modulate channel conductivity; requires <71 nC charge for full enhancement.
Drain (D)	High-side power terminal	Connected to PCB copper pour for heat dissipation; electrically tied to backside metal tab.
Source (S)	Reference node	Serves as return path for load current and gate drive reference; must be low-inductance connection in high-di/dt circuits.

Key Features

Feature	Design Value
Logic-level gate drive	Operates fully enhanced with 3.3 V or 5 V MCU outputs-no external level shifter needed.
Low R_DS(on)	5.3 mΩ at 10 V ensures <2 W conduction loss at 20 A, reducing heatsink requirements in compact designs.
Enhanced avalanche rating	270 mJ single-pulse E_AS supports reliable operation during inductive load switching transients.
Lead-free and RoHS-compliant	Meets IPC-J-STD-020 moisture sensitivity level 1 (MSL1) and JEDEC reflow profile standards.

Applications

DC-DC Converter Output Stage

Brushed DC Motor Half-Bridge

Use Scenario: Synchronous rectification in 12–48 V input, 3.3–12 V output buck converters for telecom and server power.

IC Role / Device Role / Timing Role: Low-side switch replacing Schottky diode to reduce conduction loss and improve efficiency above 85%.

Use Value: Achieves >94% efficiency at 20 A load due to 5.3 mΩ R_DS(on) and fast 85 ns turn-off minimizing shoot-through risk.

Use Scenario: Bidirectional 24 V brushed motor control in industrial actuators with PWM frequency ≤20 kHz.

IC Role / Device Role / Timing Role: High-current quadrant switch enabling forward/reverse direction control via H-bridge topology.

Use Value: Handles 36 A peak motor surge currents without derating, supported by 0.55°C/W R_θJC and D2PAK thermal pad.

AC-DC Secondary-Side Rectifier

Industrial PLC Output Driver

Use Scenario: Secondary-side synchronous rectification in 100 W offline flyback adapters for medical equipment.

IC Role / Device Role / Timing Role: Replaces 100 V Schottky diode to reduce forward voltage drop and improve light-load efficiency.

Use Value: Reduces rectifier losses by 40% vs. 100 V/3 A Schottky, validated per IEC 60601-1 thermal safety limits.

Use Scenario: Solid-state replacement of electromechanical relays in 24 V DC digital output modules.

IC Role / Device Role / Timing Role: Load switch controlling solenoids, valves, or indicator LEDs with overcurrent protection interface.

Use Value: Supports 36 A inrush current for 100 ms without latch-off, enabled by robust SOA and integrated thermal shutdown.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
STP36NF10	R_DS(on) = 30 mΩ @ 10 V - 5.7× higher on-resistance; V_GS(th) = 2–4 V - less margin for 3.3 V drive.	Lower current rating (36 A → 30 A) and higher conduction loss limit use to ≤15 A continuous loads.	Preferable only where cost sensitivity outweighs efficiency and thermal constraints.
IRFZ44NPBF	R_DS(on) = 28 mΩ @ 10 V - 5.3× higher on-resistance; Q_g = 67 nC - slightly lower gate charge but slower t_on (60 ns).	Rated for 49 A but derated to 28 A at T_C = 25°C; unsuitable for sustained >20 A operation without aggressive cooling.	Acceptable for lower-frequency (<100 kHz), lower-current motor drives where gate drive strength is limited.

Compared with STP36NF10 and IRFZ44NPBF, the IRL540NLPBF delivers superior conduction efficiency and broader logic-level compatibility, making it optimal for high-current, high-efficiency 100 V switching applications where thermal headroom is constrained.

Availability

IRL540NLPBF is available at Aetrix Electronics and suitable for DC-DC converters, motor drives, and industrial PLC output stages requiring stable component supply and long-term manufacturability.

Supply support for IRL540NLPBF 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.

The IRL540NLPBF belongs to Infineon's legacy HEXFET® logic-level MOSFET product line, engineered for high-efficiency, high-reliability switching in industrial power conversion and motor control systems.

FAQ

What is the maximum junction temperature for continuous operation?

The IRL540NLPBF has a rated maximum junction temperature of 175°C. Derating begins at T_J > 150°C per the Safe Operating Area (SOA) curve. For continuous 36 A operation, PCB thermal design must maintain T_J ≤ 150°C using ≥200 mm² of 2-oz copper connected to the drain pad.

Does this MOSFET require a gate resistor for stability?

A gate resistor (10–47 Ω) is recommended to dampen parasitic oscillation caused by PCB trace inductance and gate capacitance interaction. Without it, ringing exceeding 20 V overshoot may occur during fast switching, risking gate oxide stress or false turn-on in parallel configurations.

Can IRL540NLPBF replace IRL540N in existing designs?

Yes - IRL540NLPBF is the lead-free, RoHS-compliant version of IRL540N with identical electrical specifications, pinout, and thermal performance. The "LPbF" suffix denotes lead-free plating; no layout or drive circuit changes are required for drop-in replacement.

Is the body diode suitable for freewheeling in inductive loads?

Yes - the intrinsic body diode has soft reverse recovery (t_rr = 120 ns) and is rated for 36 A continuous forward current. It supports freewheeling in motor drives and relay snubbing, though external Schottky diodes may be added for ultra-low-loss or high-frequency (>1 MHz) operation.

IRL540NLPBF Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: HEXFET®

Package/Case:: TO-262-3 Long Leads, I2PAK, TO-262AA

Packaging:: Tube

Product Status:: Obsolete

FET Type:: N-Channel

Technology:: MOSFET (Metal Oxide)

Drain to Source Voltage (Vdss):: 100 V

Current - Continuous Drain (Id) @ 25°C:: 36A (Tc)

Drive Voltage (Max Rds On, Min Rds On):: 4V, 10V

Rds On (Max) @ Id, Vgs:: 44mOhm @ 18A, 10V

Vgs(th) (Max) @ Id:: 2V @ 250µA

Gate Charge (Qg) (Max) @ Vgs:: 74 nC @ 5 V

Vgs (Max):: ±16V

Input Capacitance (Ciss) (Max) @ Vds:: 1800 pF @ 25 V

FET Feature:: -

Power Dissipation (Max):: 3.8W (Ta), 140W (Tc)

Operating Temperature:: -55°C ~ 175°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: TO-262

IRL540NLPBF FAQ

1.How can I place an order for IRL540NLPBF through Aetrix?

Please submit a Request for Quotation (RFQ) for IRL540NLPBF on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for IRL540NLPBF reliable?

The price and inventory of IRL540NLPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IRL540NLPBF is usually 5 days.

3.What payment methods are accepted for IRL540NLPBF?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IRL540NLPBF transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for IRL540NLPBF?

IRL540NLPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your IRL540NLPBF order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for IRL540NLPBF?

For technical support, including IRL540NLPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IRL540NLPBF requirements.

6.How does Aetrix verify that IRL540NLPBF is sourced from the original manufacturer or authorized distributors?

All IRL540NLPBF products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that IRL540NLPBF meets industry standards.

7.What is the process for return or replacement of IRL540NLPBF?

All IRL540NLPBF units undergo pre-shipment inspection (PSI). If there is an issue with IRL540NLPBF, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The IRL540NLPBF part is unused and in its original packaging.

Return procedure for IRL540NLPBF:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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