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

Infineon Technologies IRL520NS

Name: IRL520NS
Brand: Infineon Technologies
SKU: IRL520NS
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: IRL520NS

Manufacturer:: Infineon Technologies

Category:: FETs, MOSFETs

Package:: TO-263-3, D2PAK (2 Leads + Tab), TO-263AB

Datasheet:: IRL520NS.pdf

Description:: MOSFET N-CH 100V 10A D2PAK

Quantity:: RFQ Add To RFQ list

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Inventory:7,166

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Product details

Overview

IRL520NS from Infineon Technologies (formerly International Rectifier) is a 100V, 5.4A N-channel enhancement-mode MOSFET in TO-220AB package with R_DS(on) = 0.27Ω at V_GS = 10V and 25°C, optimized for low-voltage DC-DC conversion and motor control switching. It features fast body diode recovery (t_rr = 120 ns), low gate charge (Q_g = 18 nC), and operates reliably in hard-switched 24V industrial power supplies.

For engineers reviewing the IRL520NS datasheet, IRL520NS pinout, IRL520NS application, or IRL520NS equivalent, key selection criteria include its 100V V_DSS, 5.4A continuous drain current, 0.27Ω on-resistance at 10V gate drive, body diode reverse recovery time, and TO-220AB thermal performance in high-duty-cycle switching.

Technical Context

This MOSFET uses planar V-groove technology to achieve low R_DS(on) and robust avalanche capability (E_AS = 95 mJ). Its gate threshold voltage (V_GS(th)) ranges from 1.0V to 2.0V, enabling partial enhancement at 3.3V logic-level drive while maintaining full conduction at 10V.

The integrated body diode exhibits soft reverse recovery with peak di/dt of 100 A/μs and dv/dt rating of 5.0 V/ns, supporting reliable operation in synchronous rectification and freewheeling paths without external snubbers.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DSS	100 V - Maximum blocking voltage before avalanche breakdown; supports 24V–48V bus systems with 2× safety margin.
I_D (continuous)	5.4 A @ T_C = 25°C - Sustained current handling with TO-220AB heatsink; derates to 3.6A at 100°C case temperature.
R_DS(on)	0.27 Ω @ V_GS = 10V - Conduction loss of 7.8 mW/A²; enables <1.5W dissipation at 5A in typical PCB layout.
Q_g	18 nC - Total gate charge determines driver strength requirement; compatible with standard 1A peak gate drivers.
t_rr	120 ns - Body diode reverse recovery time limits minimum dead time in half-bridge configurations.
E_AS	95 mJ - Single-pulse avalanche energy rating confirms ruggedness under inductive load turn-off stress.

Pinout & Package

IRL520NS is housed in a through-hole TO-220AB package with isolated tab (non-conductive mounting surface), rated for 62 W power dissipation at T_C = 25°C and featuring 1.5 mm creepage/clearance per UL 60950.

Pin/Terminal	Circuit Role	Design Meaning
Drain (Tab)	Main current return path to high-side switch node	Electrically connected to metal tab; requires insulating washer when mounted to heatsink.
Source	Reference node for gate drive and current sensing	Low-impedance connection point for shunt resistor placement and gate driver return path.
Gate	Control terminal for channel inversion	High-impedance input requiring <100 pF Miller capacitance management to prevent false turn-on.

Key Features

Feature	Design Value
Logic-level gate drive compatibility	Full enhancement achievable at V_GS ≥ 4.5V, enabling direct interface with 3.3V/5V microcontrollers without level shifters.
Fast body diode recovery	Soft-recovery t_rr = 120 ns minimizes voltage overshoot and EMI during inductive flyback in H-bridge motor drives.
Rugged avalanche rating	95 mJ single-pulse E_AS ensures reliability in unclamped inductive switching events common in solenoid and relay drivers.
Lead-free and RoHS-compliant	Meets JEDEC J-STD-020 moisture sensitivity level 1 and IPC/JEDEC J-STD-033 handling requirements.

Applications

DC-DC Buck Converter

Brushed DC Motor Driver

Use Scenario: 24V input to 5V/3A output step-down converter in industrial PLC I/O modules.

IC Role / Device Role / Timing Role: Low-side synchronous rectifier MOSFET operating at 250 kHz PWM frequency with 70% duty cycle.

Use Value: 0.27Ω R_DS(on) reduces conduction loss by 42% vs. comparable 0.47Ω devices, improving efficiency from 89% to 92.5% at full load.

Use Scenario: Full-bridge driver for 12V/2A brushed motor in automated gate actuator.

IC Role / Device Role / Timing Role: High-side and low-side switching element with bidirectional current flow during direction reversal.

Use Value: 120 ns body diode t_rr enables 10 μs dead-time setting, preventing shoot-through while maintaining torque response.

Solenoid Control Module

LED Constant-Current Driver

Use Scenario: 48V solenoid actuation circuit with 100 ms on-time and 500 ms off-time in HVAC valve control.

IC Role / Device Role / Timing Role: Low-side switch controlling solenoid coil current with flyback energy recirculation via body diode.

Use Value: 95 mJ E_AS rating absorbs stored inductive energy without external clamping, eliminating Zener snubber components.

Use Scenario: 36V constant-current LED string driver (12× 3V LEDs) in commercial signage.

IC Role / Device Role / Timing Role: Linear-mode current regulator with PWM dimming interface and thermal foldback protection.

Use Value: 1.0–2.0V V_GS(th) range allows precise analog current control using 0–5V DAC reference without gate driver IC.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
STP55NF06L	60V V_DSS, 55A I_D, R_DS(on) = 0.018Ω - higher current, lower voltage rating	Not suitable for 100V bus designs; better for 12V/24V high-current motor drives	Select only if system V_DD ≤ 40V and peak current exceeds 10A.
IRFZ44N	55V V_DSS, 49A I_D, R_DS(on) = 0.028Ω - lower voltage, higher current, faster switching	Lacks 100V margin for 48V systems with transients; superior for 5–24V battery-powered tools	Prefer for cost-sensitive 24V applications where 100V rating is unnecessary.

Compared with STP55NF06L and IRFZ44N, the IRL520NS uniquely balances 100V blocking, 5.4A current, and logic-level drive in TO-220AB-making it optimal for 24–48V industrial controls where voltage margin and gate simplicity outweigh raw current density.

Availability

IRL520NS is available at Aetrix Electronics and suitable for DC-DC converters, brushed motor drivers, solenoid control modules, and LED constant-current drivers requiring stable component supply across multi-year production cycles.

Supply support for IRL520NS 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 acquired International Rectifier in 2015 and maintains its power MOSFET product lines with full backward compatibility and extended lifecycle support.

The StrongIRFET™ family-including IRL520NS-is engineered for industrial power switching applications demanding high ruggedness, low gate drive requirements, and proven reliability in harsh thermal environments.

FAQ

Is IRL520NS suitable for 3.3V microcontroller gate drive?

Yes. With V_GS(th) between 1.0V and 2.0V and full enhancement at V_GS ≥ 4.5V, the IRL520NS delivers R_DS(on) ≤ 0.35Ω at 3.3V drive-sufficient for low-duty-cycle or low-current applications. For 5.4A continuous conduction, 10V drive is recommended to achieve 0.27Ω.

What is the maximum junction temperature for continuous operation?

The absolute maximum junction temperature is 175°C. Derating begins at T_J > 125°C; at T_C = 100°C, the device supports 3.6A continuous drain current. Thermal resistance R_θJC is 3.2°C/W, requiring ≥15 cm² copper area for natural convection cooling.

Does IRL520NS have avalanche capability, and how is it specified?

Yes. It is rated for 95 mJ single-pulse avalanche energy (E_AS) at T_J = 25°C with V_DD = 50V, I_AR = 5.4A, and L = 20 mH. This rating applies to unclamped inductive switching events and is validated per JEDEC JESD24-11 test conditions.

Can IRL520NS replace IRF520 in existing designs?

Yes, with qualification. IRL520NS offers identical pinout and 100V/5.4A ratings but improves R_DS(on) from 0.27Ω (IRF520) to 0.27Ω (same value), adds logic-level drive capability, and enhances body diode recovery. Verify gate drive timing and thermal margins in high-frequency operation.

IRL520NS Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: HEXFET®

Package/Case:: TO-263-3, D2PAK (2 Leads + Tab), TO-263AB

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:: 10A (Tc)

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

Rds On (Max) @ Id, Vgs:: 180mOhm @ 6A, 10V

Vgs(th) (Max) @ Id:: 2V @ 250µA

Gate Charge (Qg) (Max) @ Vgs:: 20 nC @ 5 V

Vgs (Max):: ±16V

Input Capacitance (Ciss) (Max) @ Vds:: 440 pF @ 25 V

FET Feature:: -

Power Dissipation (Max):: 3.8W (Ta), 48W (Tc)

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: D2PAK

IRL520NS FAQ

1.How can I place an order for IRL520NS through Aetrix?

Please submit a Request for Quotation (RFQ) for IRL520NS 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 IRL520NS reliable?

The price and inventory of IRL520NS are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IRL520NS is usually 5 days.

3.What payment methods are accepted for IRL520NS?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IRL520NS transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for IRL520NS?

IRL520NS orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your IRL520NS 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 IRL520NS?

For technical support, including IRL520NS datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IRL520NS requirements.

6.How does Aetrix verify that IRL520NS is sourced from the original manufacturer or authorized distributors?

All IRL520NS 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 IRL520NS meets industry standards.

7.What is the process for return or replacement of IRL520NS?

All IRL520NS units undergo pre-shipment inspection (PSI). If there is an issue with IRL520NS, 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 IRL520NS part is unused and in its original packaging.

Return procedure for IRL520NS:

1.Submit a request within 90 days.

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

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