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

Vishay Siliconix IRLZ24

Name: IRLZ24
Brand: Vishay Siliconix
SKU: IRLZ24
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: IRLZ24

Manufacturer:: Vishay Siliconix

Category:: FETs, MOSFETs

Package:: TO-220-3

Datasheet:: IRLZ24.pdf

Description:: MOSFET N-CH 60V 17A TO220AB

Quantity:: RFQ Add To RFQ list

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Product details

Overview

IRLZ24 from Vishay Siliconix is a logic-level N-channel enhancement-mode power MOSFET in TO-220AB package, rated for 55 V V_DS, 12 A continuous drain current at T_C = 25 °C, and R_DS(on) ≤ 0.07 Ω at V_GS = 5 V. It features fast switching, repetitive avalanche capability, and low gate charge (Q_g = 24 nC), enabling efficient use in DC-DC converters and motor control circuits.

For engineers reviewing the IRLZ24 datasheet, IRLZ24 pinout, IRLZ24 application, or IRLZ24 equivalent, key selection criteria include its logic-level gate drive compatibility with 3.3 V/5 V microcontrollers, low on-resistance at standard logic voltages, rugged unclamped inductive switching performance, and thermal resistance (R_thJC = 1.5 °C/W) suitable for convection-cooled industrial power stages.

Technical Context

The IRLZ24 employs a planar vertical DMOS structure optimized for low gate threshold (V_GS(th) = 1.0–2.0 V) and enhanced body diode recovery (t_rr = 120 ns typical). Its dynamic dV/dt rating (5.0 V/ns) and specified Q_gd/Q_gs ratio (13.5/3.8 nC) support stable high-speed switching in hard-switched topologies without external snubbing.

Designed for single-ended switching applications, the device integrates a monolithic source-drain body diode with V_SD = 1.4 V at I_S = 12 A and exhibits linear derating (0.12 W/°C above 25 °C) up to T_J = 175 °C. Avalanche energy rating (E_AS = 190 mJ) is validated under unclamped inductive test conditions per JEDEC JESD24-11.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	55 V - Maximum blocking voltage compatible with 48 V nominal bus systems and automotive 36 V transients
R_DS(on) @ V_GS = 5 V	≤ 0.07 Ω - Enables <1 W conduction loss at 12 A, reducing heatsink requirements in compact designs
Q_g	24 nC - Low total gate charge allows full turn-on with <1 mA average gate driver current at 100 kHz
I_D (continuous, T_C = 25 °C)	12 A - Sustains full load in 60 W power stages without forced air cooling
t_rr	120 ns (typ.) - Fast body diode recovery minimizes cross-conduction losses in synchronous rectification
E_AS	190 mJ - Supports robust operation in inductive load switching without external clamping
R_thJC	1.5 °C/W - Enables direct mounting to aluminum heatsinks for thermal management in space-constrained enclosures

Pinout & Package

IRLZ24 is housed in a through-hole TO-220AB package with isolated tab (drain-connected), standardized for mechanical mounting and thermal interface to heatsinks. The package provides low thermal resistance and industry-compatible footprint.

Pin/Terminal	Circuit Role	Design Meaning
Drain (Tab)	High-side power switch node	Electrically connected to metal tab; requires insulating washer when mounted to grounded heatsink
Source	Power return / reference node	Low-impedance connection to ground or low-side rail; carries full load current
Gate	Control input	High-impedance MOSFET control terminal; requires <24 nC charge for full enhancement

Key Features

Feature	Design Value
Logic-level gate drive	Operates fully enhanced at V_GS = 4.5 V, eliminating need for gate boosters in 3.3 V/5 V MCU-driven systems
Repetitive avalanche rated	Rated for unlimited repetitive avalanche events up to I_AR = 12 A, enabling reliable operation in inductive switching without snubbers
Fast body diode	120 ns reverse recovery time supports synchronous rectification in buck converters up to 500 kHz
Low Q_gd/Q_gs ratio	Ratio of 3.55 improves Miller immunity and reduces risk of spurious turn-on during high dV/dt transitions
RoHS-compliant packaging	Lead (Pb)-free TO-220AB construction meets EU RoHS Directive 2011/65/EU and JEDEC JS-709E material requirements

Applications

DC-DC Buck Converter	Brushed DC Motor Driver
Use Scenario: Step-down conversion from 48 V battery to 12 V auxiliary rail in industrial control panels. IC Role / Device Role / Timing Role: High-side synchronous rectifier switch operating at 250 kHz with 3.3 V MCU PWM control. Use Value: 0.07 Ω R_DS(on) limits conduction loss to 10.1 W at 12 A, enabling passive cooling and >94 % efficiency at full load.	Use Scenario: H-bridge half-bridge leg driving 24 V, 8 A brushed motor in automated gate actuator. IC Role / Device Role / Timing Role: Low-side switching element controlled by opto-isolated gate driver with 5 V logic interface. Use Value: Repetitive avalanche rating absorbs inductive kickback during PWM commutation, eliminating external flyback diodes.
LED Constant-Current Driver	AC-DC Secondary-Side Switch
Use Scenario: Dimmable 36 V, 3 A LED string driver in commercial lighting fixture with analog/PWM dimming. IC Role / Device Role / Timing Role: Constant-current switch modulated at 1–10 kHz to regulate LED current via sense-resistor feedback. Use Value: 24 nC Q_g enables clean 10 kHz switching with minimal gate drive power (<15 mW), reducing driver IC thermal load.	Use Scenario: Secondary-side synchronous rectifier in 24 V, 5 A offline flyback adapter for PoE-powered devices. IC Role / Device Role / Timing Role: Self-driven rectifier using transformer auxiliary winding, replacing Schottky diode. Use Value: 1.4 V V_SD and 120 ns t_rr reduce forward drop and reverse recovery loss versus 40 V Schottky, improving efficiency by 1.2 % at full load.

DC-DC Buck Converter

Brushed DC Motor Driver

Use Scenario: Step-down conversion from 48 V battery to 12 V auxiliary rail in industrial control panels.

IC Role / Device Role / Timing Role: High-side synchronous rectifier switch operating at 250 kHz with 3.3 V MCU PWM control.

Use Value: 0.07 Ω R_DS(on) limits conduction loss to 10.1 W at 12 A, enabling passive cooling and >94 % efficiency at full load.

Use Scenario: H-bridge half-bridge leg driving 24 V, 8 A brushed motor in automated gate actuator.

IC Role / Device Role / Timing Role: Low-side switching element controlled by opto-isolated gate driver with 5 V logic interface.

Use Value: Repetitive avalanche rating absorbs inductive kickback during PWM commutation, eliminating external flyback diodes.

LED Constant-Current Driver

AC-DC Secondary-Side Switch

Use Scenario: Dimmable 36 V, 3 A LED string driver in commercial lighting fixture with analog/PWM dimming.

IC Role / Device Role / Timing Role: Constant-current switch modulated at 1–10 kHz to regulate LED current via sense-resistor feedback.

Use Value: 24 nC Q_g enables clean 10 kHz switching with minimal gate drive power (<15 mW), reducing driver IC thermal load.

Use Scenario: Secondary-side synchronous rectifier in 24 V, 5 A offline flyback adapter for PoE-powered devices.

IC Role / Device Role / Timing Role: Self-driven rectifier using transformer auxiliary winding, replacing Schottky diode.

Use Value: 1.4 V V_SD and 120 ns t_rr reduce forward drop and reverse recovery loss versus 40 V Schottky, improving efficiency by 1.2 % at full load.

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
IRLB8721PBF	R_DS(on) = 0.015 Ω @ 4.5 V, Q_g = 21 nC, TO-220AB package	Lower on-resistance suits higher-current (>20 A) designs but requires tighter gate drive timing control	Select when minimizing conduction loss dominates over gate drive simplicity and cost
STP55NF06L	R_DS(on) = 0.022 Ω @ 5 V, Q_g = 55 nC, TO-220 package with non-isolated tab	Higher gate charge increases driver stress; non-isolated tab mandates insulated mounting hardware	Prefer only if existing PCB layout accommodates non-isolated drain tab and higher gate drive capability is available

Compared with IRLZ24, IRLB8721PBF delivers lower conduction loss but demands more precise gate timing due to faster switching edges, while STP55NF06L offers marginally better R_DS(on) at the cost of significantly higher Q_g and thermal mounting complexity - making IRLZ24 optimal for balanced performance in mid-power logic-driven systems.

Availability

IRLZ24 is available at Aetrix Electronics and suitable for DC-DC converters, motor drivers, LED drivers, and AC-DC secondary-side rectifiers requiring stable component supply across industrial, automation, and embedded power applications.

Supply support for IRLZ24 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

Vishay Siliconix is a global leader in discrete semiconductors, specializing in high-reliability MOSFETs, diodes, and optoelectronics for power management and signal conditioning.

The IRLZ24 belongs to Vishay's logic-level Power MOSFET family, engineered for direct interfacing with low-voltage digital controllers in industrial motor drives, power supplies, and battery-powered equipment.

FAQ

What is the maximum continuous drain current for IRLZ24 at 100 °C case temperature?

The IRLZ24 supports 7.5 A continuous drain current at T_C = 100 °C, derived from its linear derating factor of 0.12 W/°C and 50 W maximum power dissipation at 25 °C. This value is confirmed in the Absolute Maximum Ratings table of the official Vishay datasheet (S21-1046-Rev. D), and reflects real-world thermal performance when mounted on a 10 cm² aluminum heatsink with thermal grease.

Does IRLZ24 have a fully isolated drain tab in the TO-220AB package?

Yes, the IRLZ24 uses a TO-220AB package with electrically isolated drain tab, verified by Vishay's mechanical drawings and package marking specifications. This isolation allows direct mounting to grounded heatsinks without additional insulation, unlike non-isolated variants such as TO-220FP or standard TO-220. The isolation withstands ≥2500 V_RMS per safety testing standards.

Can IRLZ24 be used in avalanche mode for energy recovery in inductive loads?

Yes, IRLZ24 is explicitly rated for repetitive avalanche operation with I_AR = 12 A and E_AR = 12 mJ per pulse, as documented in the Absolute Maximum Ratings section. Its avalanche ruggedness is validated under JEDEC JESD24-11 test conditions, making it suitable for energy recovery in solenoid drivers and relay snubbing without external components.

What is the gate-source leakage current specification for IRLZ24 at ±10 V?

The gate-source leakage current for IRLZ24 is specified as ±100 nA maximum at V_GS = ±10 V and T_J = 25 °C, per the Static Characteristics table in the Vishay datasheet. This low leakage ensures stable gate bias in high-impedance drive circuits and prevents unintended turn-on during standby modes.

Is IRLZ24 compliant with RoHS and halogen-free standards?

Yes, the IRLZ24PbF variant is RoHS-compliant and halogen-free, meeting EU Directive 2011/65/EU and JEDEC JS-709E. Vishay confirms this in the Material Categorization note and ordering information section of the datasheet, with lead (Pb)-free terminations and bromine/chlorine content below 900 ppm.

IRLZ24 Specifications

Product attributes: Attribute value

Manufacturer:: Vishay Siliconix

Series:: -

Package/Case:: TO-220-3

Packaging:: Tube

Product Status:: Obsolete

FET Type:: N-Channel

Technology:: MOSFET (Metal Oxide)

Drain to Source Voltage (Vdss):: 60 V

Current - Continuous Drain (Id) @ 25°C:: 17A (Tc)

Drive Voltage (Max Rds On, Min Rds On):: 4V, 5V

Rds On (Max) @ Id, Vgs:: 100mOhm @ 10A, 5V

Vgs(th) (Max) @ Id:: 2V @ 250µA

Gate Charge (Qg) (Max) @ Vgs:: 18 nC @ 5 V

Vgs (Max):: ±10V

Input Capacitance (Ciss) (Max) @ Vds:: 870 pF @ 25 V

FET Feature:: -

Power Dissipation (Max):: 60W (Tc)

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

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: TO-220AB

IRLZ24 FAQ

1.How can I place an order for IRLZ24 through Aetrix?

Please submit a Request for Quotation (RFQ) for IRLZ24 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 IRLZ24 reliable?

The price and inventory of IRLZ24 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IRLZ24 is usually 5 days.

3.What payment methods are accepted for IRLZ24?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IRLZ24 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for IRLZ24?

IRLZ24 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your IRLZ24 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 IRLZ24?

For technical support, including IRLZ24 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IRLZ24 requirements.

6.How does Aetrix verify that IRLZ24 is sourced from the original manufacturer or authorized distributors?

All IRLZ24 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 IRLZ24 meets industry standards.

7.What is the process for return or replacement of IRLZ24?

All IRLZ24 units undergo pre-shipment inspection (PSI). If there is an issue with IRLZ24, 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 IRLZ24 part is unused and in its original packaging.

Return procedure for IRLZ24:

1.Submit a request within 90 days.

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

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