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

Infineon Technologies IRF9540NL

Name: IRF9540NL
Brand: Infineon Technologies
SKU: IRF9540NL
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: IRF9540NL

Manufacturer:: Infineon Technologies

Category:: FETs, MOSFETs

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

Datasheet:: IRF9540NL.pdf

Description:: MOSFET P-CH 100V 23A TO262

Quantity:: RFQ Add To RFQ list

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Inventory:5,968

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Product details

Overview

IRF9540NL from Infineon Technologies is a P-channel enhancement-mode MOSFET in D2Pak (TO-262) package, rated for -100 V V(BR)DSS, 14 A continuous drain current at 25°C, and 117 mΩ RDS(on) at VGS = -10 V. It features 150°C maximum junction temperature, fast switching (td(on) = 13 ns, tr = 64 ns), and rated repetitive avalanche energy (EAR = 300 mJ). It is used in DC-DC synchronous rectification and high-side load switching in industrial power supplies.

For engineers reviewing the IRF9540NL datasheet, IRF9540NL pinout, IRF9540NL application, or IRF9540NL equivalent, key selection criteria include its -100 V breakdown voltage, 117 mΩ on-resistance at -10 V gate drive, 150°C thermal rating, body diode forward voltage of -1.6 V, and 14 A continuous source current capability in reverse conduction mode.

Technical Context

This device operates as a high-voltage, medium-current P-channel switch with integrated body diode. Its gate threshold voltage range (-2.0 V to -4.0 V) enables reliable turn-on with standard logic-level negative gate drive, while the 73 nC total gate charge supports efficient PWM control at up to several hundred kHz.

The MOSFET's thermal design is enabled by low RθJC (1.1 °C/W) and support for PCB-mount heatsinking. Its rated repetitive avalanche capability (300 mJ) and 140–210 ns reverse recovery time (trr) allow robust operation under inductive switching stress and freewheeling conditions in buck converters and motor drives.

Key Specifications

Parameter	Value and Actual Design Meaning
V(BR)DSS	-100 V - Withstands up to -100 V drain-to-source voltage before avalanche onset, enabling use in 48 V and 72 V bus systems.
RDS(on)	117 mΩ @ VGS = -10 V - Low conduction loss at nominal gate drive, yielding <0.23 W conduction loss at 14 A.
ID (TC=25°C)	-14 A - Continuous drain current rating defines safe steady-state power delivery in high-side switch configurations.
TJ max	150°C - Enables operation in sealed enclosures or high-ambient environments without derating below full current.
Qg	73 nC typ - Gate charge determines required driver peak current and switching loss in hard-switched topologies.
trr	140–210 ns - Body diode reverse recovery time directly impacts shoot-through risk and EMI in synchronous rectifiers.
VSD	-1.6 V @ IS = -14 A - Forward voltage drop of internal body diode sets minimum voltage overhead during freewheeling.

Pinout & Package

IRF9540NL uses the D2Pak (TO-262) surface-mount package with exposed drain pad for thermal performance. The package has three terminals: Drain (tab), Source (pin 1), and Gate (pin 2).

Pin/Terminal	Circuit Role	Design Meaning
Drain (Tab)	Main current output terminal / heat sink interface	Electrically and thermally connected to PCB copper pour; carries full load current and dissipates >90% of heat.
Source (Pin 1)	Reference node for gate drive and current return path	Serves as common reference for gate control and provides return path for load current and body diode conduction.
Gate (Pin 2)	Control input for channel modulation	High-impedance input requiring <100 nA leakage; driven with negative voltage relative to source to turn on P-channel device.

Key Features

Feature	Design Value
Ultra-low RDS(on)	117 mΩ at -10 V ensures <0.23 W conduction loss at 14 A, reducing thermal burden in compact power stages.
150°C operating junction	Enables full-rated current delivery in ambient temperatures up to +85°C with standard PCB cooling.
Fast switching speed	13 ns turn-on delay and 64 ns rise time support >200 kHz PWM in DC-DC converters without excessive switching loss.
Repetitive avalanche rated	300 mJ rated energy allows safe clamping of inductive kickback in relay drivers and solenoid controls without external snubbers.
Lead-free construction	Complies with RoHS Directive 2011/65/EU and JEDEC J-STD-020 moisture sensitivity level 1 (MSL1).

Applications

Industrial Power Supply

Automotive Lighting Control

Use Scenario: High-side switch in 24 V DC input AC/DC front-end or isolated DC-DC converter secondary side.

IC Role / Device Role / Timing Role: P-channel MOSFET configured as high-side load switch with gate driven by isolated level-shifter or charge-pump circuit.

Use Value: 117 mΩ RDS(on) minimizes conduction loss at 10–15 A loads; 150°C rating sustains operation during transient overloads.

Use Scenario: Headlamp or fog lamp dimming and on/off control in 12 V automotive systems.

IC Role / Device Role / Timing Role: High-side switch replacing mechanical relay; driven by microcontroller GPIO via discrete inverter stage.

Use Value: -100 V rating provides margin against load-dump transients (up to +120 V); body diode handles inductive flyback from lamp filaments.

Motor Drive Half-Bridge

Telecom DC Distribution

Use Scenario: Upper switch in H-bridge for brushed DC motor control in HVAC actuators or industrial valves.

IC Role / Device Role / Timing Role: Synchronized high-side switch with complementary N-channel low-side; gate driven by bootstrap or isolated gate driver.

Use Value: 140–210 ns trr limits cross-conduction risk during dead-time; 300 mJ avalanche rating absorbs motor back-EMF spikes.

Use Scenario: OR-ing diode replacement in redundant 48 V telecom power shelves using ideal diode controller.

IC Role / Device Role / Timing Role: P-channel MOSFET operated in linear mode by external controller to emulate low-loss diode behavior.

Use Value: -1.6 V VSD and low RDS(on) reduce forward voltage drop vs. Schottky diodes, improving efficiency by ~1.2% at 10 A.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
STP9NK90ZFP	900 V V(BR)DSS, 8.5 A ID, 1.2 Ω RDS(on), TO-220FP package	Higher voltage rating but lower current and much higher on-resistance; suited for flyback snubber or low-duty-cycle HV switching	Select only when >900 V blocking is required; not suitable for 14 A continuous conduction.
IXTP12P10P	100 V V(BR)DSS, 12 A ID, 130 mΩ RDS(on), TO-220 package, 175°C TJ max	Near-identical voltage/current specs but higher RDS(on); wider temperature range improves reliability in sealed enclosures	Prefer for extended temperature operation; accept 11% higher conduction loss for 25°C higher thermal margin.

Compared with STP9NK90ZFP and IXTP12P10P, IRF9540NL delivers optimal balance of 14 A current handling, 117 mΩ on-resistance, and D2Pak thermal performance for medium-power high-side switching-making it preferable for space-constrained 24–48 V industrial and telecom power designs.

Availability

IRF9540NL is available at Aetrix Electronics and suitable for industrial power supply, automotive lighting control, motor drive half-bridge, and telecom DC distribution requiring stable component supply and long-term lifecycle support.

Supply support for IRF9540NL 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 electronics, and industrial control ICs and discrete devices.

The IRF9540NL belongs to Infineon's legacy HEXFET® P-channel MOSFET product line, designed specifically for high-reliability, medium-power switching in industrial and transportation power systems where thermal robustness and avalanche tolerance are critical.

FAQ

What is the maximum gate-to-source voltage rating for IRF9540NL?

The absolute maximum VGS rating is ±20 V. Operation beyond ±20 V risks permanent gate oxide damage. For reliable turn-on, -10 V is recommended; gate drive circuits must clamp negative transients to avoid exceeding -20 V during switching transitions or fault events.

Can IRF9540NL be used in parallel configurations?

Yes, but with strict layout and gate drive matching. Its positive RDS(on) temperature coefficient (normalized resistance increases with TJ) supports current sharing. Use individual gate resistors (≤10 Ω), symmetrical PCB traces, and shared source Kelvin connection to minimize imbalance under dynamic load conditions.

Does IRF9540NL have built-in ESD protection?

No. The device lacks integrated ESD protection diodes on gate or source terminals. Gate inputs must be protected externally with series resistance (≥100 Ω) and TVS clamping (e.g., SMAJ5.0A) to limit transient gate voltage to within ±20 V during handling or system-level ESD events.

What is the typical reverse recovery charge (Qrr) of the body diode?

Qrr is 890–1340 nC at TJ = 25°C, IS = -14 A, and di/dt = -100 A/µs. This value directly affects switching loss and EMI in synchronous rectifier applications; designers should size gate drivers and snubbers accordingly to manage associated current spikes during commutation.

IRF9540NL 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:: P-Channel

Technology:: MOSFET (Metal Oxide)

Drain to Source Voltage (Vdss):: 100 V

Current - Continuous Drain (Id) @ 25°C:: 23A (Tc)

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

Rds On (Max) @ Id, Vgs:: 117mOhm @ 11A, 10V

Vgs(th) (Max) @ Id:: 4V @ 250µA

Gate Charge (Qg) (Max) @ Vgs:: 97 nC @ 10 V

Vgs (Max):: ±20V

Input Capacitance (Ciss) (Max) @ Vds:: 1300 pF @ 25 V

FET Feature:: -

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

Operating Temperature:: -55°C ~ 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: TO-262

IRF9540NL FAQ

1.How can I place an order for IRF9540NL through Aetrix?

Please submit a Request for Quotation (RFQ) for IRF9540NL 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 IRF9540NL reliable?

The price and inventory of IRF9540NL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IRF9540NL is usually 5 days.

3.What payment methods are accepted for IRF9540NL?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IRF9540NL transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for IRF9540NL?

IRF9540NL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your IRF9540NL 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 IRF9540NL?

For technical support, including IRF9540NL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IRF9540NL requirements.

6.How does Aetrix verify that IRF9540NL is sourced from the original manufacturer or authorized distributors?

All IRF9540NL 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 IRF9540NL meets industry standards.

7.What is the process for return or replacement of IRF9540NL?

All IRF9540NL units undergo pre-shipment inspection (PSI). If there is an issue with IRF9540NL, 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 IRF9540NL part is unused and in its original packaging.

Return procedure for IRF9540NL:

1.Submit a request within 90 days.

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

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