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

Infineon Technologies IRLL024Z

Name: IRLL024Z
Brand: Infineon Technologies
SKU: IRLL024Z
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: IRLL024Z

Manufacturer:: Infineon Technologies

Category:: FETs, MOSFETs

Package:: TO-261-4, TO-261AA

Datasheet:: IRLL024Z.pdf

Description:: MOSFET N-CH 55V 5A SOT223

Quantity:: RFQ Add To RFQ list

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Product details

Overview

IRLL024Z from Infineon Technologies is an N-channel enhancement-mode HEXFET® Power MOSFET in SOT-223 package, rated for 55V V_DSS, 5.0A continuous drain current at 25°C, and 60mΩ R_DS(on) at V_GS = 10V. It features 150°C maximum junction temperature, fast switching (t_r = 33ns, t_f = 15ns), and 100% production-tested repetitive avalanche capability up to T_jmax, making it suitable for DC-DC converters, motor control, and load switching in industrial power supplies.

For engineers reviewing the IRLL024Z datasheet, IRLL024Z pinout, IRLL024Z application, or IRLL024Z equivalent, key selection criteria include its low on-resistance per silicon area, thermal robustness under pulsed loads, body diode recovery performance (t_rr = 15–23ns, Q_rr = 9.1–14nC), and PCB-mount thermal resistance (R_θJA = 45°C/W on copper board).

Technical Context

This MOSFET employs advanced planar processing to minimize conduction loss while maintaining high avalanche ruggedness. Its gate threshold voltage (V_GS(th) = 1.0–3.0V) enables reliable turn-on with standard logic-level drivers, and its transconductance (g_fs = 7.5S typ.) supports stable gain in linear-mode operation.

The device integrates a monolithic body diode with V_SD ≤ 1.3V at 3.0A and exhibits controlled reverse recovery behavior-critical for minimizing switching losses and EMI in hard-switched topologies. C_iss = 380pF and C_oss(eff) = 93pF further define its high-frequency gate drive requirements and snubber design constraints.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DSS	55V - Maximum blocking voltage before avalanche onset; defines safe operating range in 24V/48V bus applications.
R_DS(on)	60mΩ max @ V_GS = 10V - Directly determines I²R conduction loss; yields ≤1.5W dissipation at 5.0A DC.
I_D (continuous)	5.0A @ T_A = 25°C - Usable DC current with adequate heatsinking on FR-4; derates to 4.0A at 70°C ambient.
t_r/t_f	33ns / 15ns - Fast edge rates enable >500kHz switching without excessive gate drive power or shoot-through risk.
E_AS	38mJ (tested) - Confirmed single-pulse avalanche energy; supports unclamped inductive turn-off in relay/motor drivers.
R_θJA	45°C/W (copper board) - Thermal impedance sets junction rise above ambient; allows ~105°C T_j at 2.8W dissipation.
Q_g	7.0–11nC - Total gate charge magnitude dictates minimum driver current and switching time trade-offs.

Pinout & Package

IRLL024Z is housed in a surface-mount SOT-223 package with three leads: Drain (tab), Source (pin 1), and Gate (pin 2). The exposed drain tab provides low-inductance, high-current path and serves as primary thermal interface to PCB copper.

Pin/Terminal	Circuit Role	Design Meaning
Drain (Tab)	Main high-side current path	Electrically and thermally connected to PCB copper pour; requires solder mask opening for optimal thermal transfer.
Source (Pin 1)	Reference node for gate drive and current sensing	Low-impedance return path; critical for stable gate control and accurate current monitoring in high-side configurations.
Gate (Pin 2)	Control terminal for channel modulation	High-impedance input requiring <11nC charge; sensitive to ESD and ringing-requires local RC snubber if driven by long traces.

Key Features

Feature	Design Value
Ultra-low R_DS(on)	60mΩ max at 10V gate drive reduces conduction loss by ≥30% vs. legacy SOT-223 MOSFETs in 5A-class loads.
150°C junction rating	Enables operation in sealed enclosures or high-ambient environments without forced air cooling.
Fast switching speed	33ns rise + 15ns fall time minimizes transition loss in PWM-controlled buck regulators and half-bridge inverters.
Repetitive avalanche rated	Validated for repeated unclamped inductive switching up to T_jmax, eliminating need for external clamping diodes in solenoid drivers.
Lead-free construction	RoHS-compliant SOT-223 package meets IPC-J-STD-020 moisture sensitivity level 1 (MSL1) for standard reflow.

Applications

DC-DC Buck Converter

Brushed DC Motor Driver

Use Scenario: Step-down regulation from 48V bus to 12V/5V for industrial sensors and PLC I/O modules.

IC Role / Device Role / Timing Role: High-side synchronous rectifier switch operating at 300–500kHz with gate drive referenced to input rail.

Use Value: 60mΩ R_DS(on) limits conduction loss to <1.5W at 5A, while fast t_r/t_f maintains efficiency >92% across 20–100% load range.

Use Scenario: H-bridge leg for 24V brushed motors in automated gate actuators and HVAC dampers.

IC Role / Device Role / Timing Role: Low-side switching element handling bidirectional current up to 5A with integrated body diode freewheeling.

Use Value: 1.3V V_SD and 15ns t_f reduce freewheeling loss and EMI during direction reversal, enabling silent operation below 20kHz.

Hot-Swap Controller

LED Constant-Current Driver

Use Scenario: Inrush current limiting and fault isolation in redundant 24V power distribution units.

IC Role / Device Role / Timing Role: Series pass element controlled by external current-sense amplifier and comparator.

Use Value: 150°C T_jmax and 38mJ E_AS allow safe operation during sustained overcurrent events without thermal shutdown or latch-up.

Use Scenario: Dimmable constant-current source for high-brightness LED arrays in architectural lighting fixtures.

IC Role / Device Role / Timing Role: Linear-mode current regulator modulated via analog/PWM gate bias to set LED current.

Use Value: Stable 1.0–3.0V V_GS(th) and 7.5S g_fs provide precise, temperature-compensated current control with <±3% drift from 25°C to 125°C.

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
DMN3020LSD-13	R_DS(on) = 20mΩ @ 4.5V, but rated only to 30V V_DSS; smaller SOT-23 package limits thermal capacity.	Better for low-voltage (<24V), space-constrained designs; unsuitable for 48V bus or high-temperature ambient.	Select when gate drive is limited to 4.5V and peak voltage remains ≤30V-avoid in industrial 48V systems.
IRLML6344TRPBF	R_DS(on) = 32mΩ @ 4.5V, 30V V_DSS, SOT-23 package; lower Q_g (4.4nC) but no avalanche rating.	Optimized for battery-powered portable devices with tight gate drive budgets; lacks avalanche ruggedness for inductive loads.	Prefer for consumer electronics with 3.3V/5V logic drive and non-inductive loads; not recommended for motor or relay control.

Compared with DMN3020LSD-13 and IRLML6344TRPBF, IRLL024Z uniquely balances 55V blocking, 60mΩ on-resistance, full avalanche rating, and SOT-223 thermal capability-making it the only option among the three qualified for 48V industrial switching with reliability-critical inductive loads.

Availability

IRLL024Z is available at Aetrix Electronics and suitable for DC-DC converters, brushed DC motor drivers, hot-swap controllers, and LED constant-current drivers requiring stable component supply and long-term industrial lifecycle support.

Supply support for IRLL024Z 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, with global manufacturing and quality certification to ISO/TS 16949 and IECQ QC 080000.

The IRLL024Z belongs to Infineon's HEXFET® Power MOSFET product line, engineered specifically for high-efficiency, high-reliability switching in industrial power conversion and motor control where thermal resilience and avalanche robustness are mandatory.

FAQ

Is IRLL024Z suitable for 48V automotive applications?

No-while rated for 55V V_DSS, IRLL024Z is not AEC-Q101 qualified and lacks automotive-grade screening, transient immunity, and extended temperature validation beyond 150°C junction. It is intended for industrial and commercial power systems, not automotive ECUs or body electronics.

What is the maximum continuous current at 85°C ambient?

At T_A = 85°C, the linear derating factor of 1.0W/°C reduces allowable power dissipation from 2.8W (at 25°C) to 0.8W. With R_DS(on) = 60mΩ, this corresponds to a maximum continuous I_D ≈ 3.66A-verified by Fig. 9 in the datasheet showing 3.7A at 85°C ambient.

Does IRLL024Z require a gate resistor for stability?

Yes-a series gate resistor (typically 10–47Ω) is recommended to dampen parasitic oscillation caused by trace inductance interacting with Q_gd = 4.0nC. Without it, ringing can exceed V_GS = ±16V absolute maximum and cause erratic switching or gate oxide stress.

Can IRLL024Z be used in linear (analog) mode?

Yes-the device is characterized for linear operation with specified g_fs = 7.5S and V_GS(th) = 1.0–3.0V. However, SOA limitations (Fig. 8) restrict safe linear use to ≤1.5A at V_DS = 20V with active heatsinking; sustained operation requires strict thermal monitoring.

IRLL024Z Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: HEXFET®

Package/Case:: TO-261-4, TO-261AA

Packaging:: Tube

Product Status:: Obsolete

FET Type:: N-Channel

Technology:: MOSFET (Metal Oxide)

Drain to Source Voltage (Vdss):: 55 V

Current - Continuous Drain (Id) @ 25°C:: 5A (Tc)

Drive Voltage (Max Rds On, Min Rds On):: 4.5V, 10V

Rds On (Max) @ Id, Vgs:: 60mOhm @ 3A, 10V

Vgs(th) (Max) @ Id:: 3V @ 250µA

Gate Charge (Qg) (Max) @ Vgs:: 11 nC @ 5 V

Vgs (Max):: ±16V

Input Capacitance (Ciss) (Max) @ Vds:: 380 pF @ 25 V

FET Feature:: -

Power Dissipation (Max):: 1W (Ta)

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-223

IRLL024Z FAQ

1.How can I place an order for IRLL024Z through Aetrix?

Please submit a Request for Quotation (RFQ) for IRLL024Z 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 IRLL024Z reliable?

The price and inventory of IRLL024Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IRLL024Z is usually 5 days.

3.What payment methods are accepted for IRLL024Z?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IRLL024Z transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for IRLL024Z?

IRLL024Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your IRLL024Z 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 IRLL024Z?

For technical support, including IRLL024Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IRLL024Z requirements.

6.How does Aetrix verify that IRLL024Z is sourced from the original manufacturer or authorized distributors?

All IRLL024Z 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 IRLL024Z meets industry standards.

7.What is the process for return or replacement of IRLL024Z?

All IRLL024Z units undergo pre-shipment inspection (PSI). If there is an issue with IRLL024Z, 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 IRLL024Z part is unused and in its original packaging.

Return procedure for IRLL024Z:

1.Submit a request within 90 days.

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

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