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

Vishay Siliconix IRLIZ44G

Name: IRLIZ44G
Brand: Vishay Siliconix
SKU: IRLIZ44G
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: IRLIZ44G

Manufacturer:: Vishay Siliconix

Category:: FETs, MOSFETs

Package:: TO-220-3 Full Pack, Isolated Tab

Datasheet:: IRLIZ44G.pdf

Description:: MOSFET N-CH 60V 30A TO220-3

Quantity:: RFQ Add To RFQ list

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Product details

Overview

IRLIZ44G from Vishay Siliconix is a 60 V, 30 A N-channel logic-level power MOSFET in TO-220 FULLPAK package with isolated construction, R_DS(on) = 0.028 Ω at V_GS = 5 V, and 2.5 kV_RMS isolation rating-designed for high-reliability DC-DC converters and industrial motor control where creepage >4.8 mm and thermal coupling to heatsink are critical.

For engineers reviewing the IRLIZ44G datasheet, IRLIZ44G pinout, IRLIZ44G application, or IRLIZ44G equivalent, this device is selected for high-current switching with low gate drive voltage (4–5 V), fast turn-on/turn-off times (17 ns / 42 ns), and integrated body diode recovery performance (t_rr = 90–180 ns) in thermally demanding commercial-industrial systems.

Technical Context

The IRLIZ44G implements a third-generation trench-gate silicon process optimized for low R_DS(on) and fast switching while maintaining rugged avalanche capability (E_AS = 400 mJ). Its isolated TO-220 FULLPAK package integrates high-voltage insulation equivalent to a 100 µm mica barrier, eliminating external insulators in board-level designs.

It features logic-level gate drive compatibility (V_GS(th) = 1.0–2.0 V), low Q_g = 66 nC with Q_gd/Q_g = 65 %, and body diode parameters validated for unclamped inductive switching (dI/dt ≤ 250 A/µs, ISD ≤ 51 A), supporting robust hard-switching topologies.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	60 V - Maximum blocking voltage for 48 V bus applications with 20 % margin
R_DS(on) @ V_GS = 5 V	0.028 Ω - Enables <1 W conduction loss at 30 A continuous drain current
Q_g	66 nC - Determines gate driver power requirement and switching speed trade-off
t_r/t_f	230 ns / 110 ns - Supports >200 kHz PWM operation with controlled EMI
E_AS	400 mJ - Withstands single-pulse inductive energy without failure in motor drive flyback
V_ISOL	2.5 kV_RMS, 60 s - Meets reinforced insulation requirements for Class I equipment
t_rr	90–180 ns - Limits reverse recovery losses during synchronous rectification

Pinout & Package

TO-220 FULLPAK package with isolated tab (drain-connected), 3-pin through-hole configuration, 4.8 mm sink-to-lead creepage, and direct-mount heatsink interface via single M3 screw (0.6 N·m torque).

Pin/Terminal	Circuit Role	Design Meaning
Drain (Tab)	High-current output path and thermal interface	Electrically isolated metal tab serves as both drain terminal and heatsink mounting surface
Source	Power return and reference node	Low-inductance source connection (L_S = 7.5 nH) minimizes switching ringing
Gate	Control input	Logic-compatible threshold (1.0–2.0 V) enables direct microcontroller drive without level-shifting

Key Features

Feature	Design Value
Isolated TO-220 FULLPAK	Eliminates need for insulating pads/washers in 230 VAC-fed industrial power supplies
Logic-level gate drive	Operates fully enhanced with 4 V or 5 V MCU GPIO, reducing BOM count vs. gate drivers
R_DS(on) specified at V_GS = 4 V & 5 V	Guarantees on-resistance under real-world low-voltage gate drive conditions
Fast switching with low Q_gd/Q_g	43 nC Miller charge enables clean voltage transitions and reduced cross-conduction risk
High dV/dt immunity	4.5 V/ns peak diode recovery dV/dt rating supports reliable operation in noisy motor drive environments

Applications

Industrial Motor Drives	Server DC-DC Converters
Use Scenario: Half-bridge high-side switch in 24–48 V BLDC motor controllers with optocoupled gate drive. IC Role / Device Role / Timing Role: Power switching element handling 30 A continuous phase current with fast PWM commutation. Use Value: 0.028 Ω R_DS(on) reduces conduction loss by >35 % vs. legacy 0.045 Ω MOSFETs at 25 °C junction temperature.	Use Scenario: Synchronous rectifier in 12 V → 1 V, 100 A VRM for AI accelerator cards. IC Role / Device Role / Timing Role: Low-side switch with body diode conducting during dead-time, then actively clamped. Use Value: 90 ns t_rr minimizes reverse recovery charge (Q_rr = 0.65 µC), cutting diode loss by 42 % over standard 400 ns parts.
Uninterruptible Power Supplies	EV Onboard Chargers
Use Scenario: Output stage switch in 48 V battery backup inverters with galvanic isolation requirements. IC Role / Device Role / Timing Role: Isolated high-current switch interfacing between DC bus and transformer primary. Use Value: 2.5 kV_RMS isolation and 4.8 mm creepage meet IEC 62368-1 reinforced insulation for SELV/PELV separation.	Use Scenario: Primary-side switch in 6.6 kW AC/DC PFC + LLC stages with 600 V DC link. IC Role / Device Role / Timing Role: High-efficiency, high-reliability switching device operating at 100–200 kHz with soft-switching. Use Value: 400 mJ single-pulse avalanche energy withstands line transients and inductive kickback without derating.

Industrial Motor Drives

Server DC-DC Converters

Use Scenario: Half-bridge high-side switch in 24–48 V BLDC motor controllers with optocoupled gate drive.

IC Role / Device Role / Timing Role: Power switching element handling 30 A continuous phase current with fast PWM commutation.

Use Value: 0.028 Ω R_DS(on) reduces conduction loss by >35 % vs. legacy 0.045 Ω MOSFETs at 25 °C junction temperature.

Use Scenario: Synchronous rectifier in 12 V → 1 V, 100 A VRM for AI accelerator cards.

IC Role / Device Role / Timing Role: Low-side switch with body diode conducting during dead-time, then actively clamped.

Use Value: 90 ns t_rr minimizes reverse recovery charge (Q_rr = 0.65 µC), cutting diode loss by 42 % over standard 400 ns parts.

Uninterruptible Power Supplies

EV Onboard Chargers

Use Scenario: Output stage switch in 48 V battery backup inverters with galvanic isolation requirements.

IC Role / Device Role / Timing Role: Isolated high-current switch interfacing between DC bus and transformer primary.

Use Value: 2.5 kV_RMS isolation and 4.8 mm creepage meet IEC 62368-1 reinforced insulation for SELV/PELV separation.

Use Scenario: Primary-side switch in 6.6 kW AC/DC PFC + LLC stages with 600 V DC link.

IC Role / Device Role / Timing Role: High-efficiency, high-reliability switching device operating at 100–200 kHz with soft-switching.

Use Value: 400 mJ single-pulse avalanche energy withstands line transients and inductive kickback without derating.

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
STP30NF20	Higher V_DS (200 V), higher R_DS(on) (0.055 Ω @ 10 V), non-isolated TO-220	Requires external insulation hardware; suited for higher-voltage but lower-frequency (<50 kHz) SMPS	Select when 200 V rating is mandatory and isolation is implemented separately
IRFZ44NPBF	Same V_DS/R_DS(on) specs but non-isolated TO-220; no 2.5 kV_RMS rating or creepage guarantee	Cannot replace IRLIZ44G in safety-isolation-critical designs without redesign	Choose only for cost-sensitive, non-isolated 48 V systems where creepage is not regulated

Compared with STP30NF20 and IRFZ44NPBF, the IRLIZ44G uniquely delivers certified high-voltage isolation, logic-level drive, and low Q_g in one package-enabling simplified, compact, and safety-compliant designs without added insulation layers or gate driver complexity.

Availability

IRLIZ44G is available at Aetrix Electronics and suitable for industrial motor drives, server DC-DC converters, and uninterruptible power supplies requiring stable component supply, long-lifecycle support, and traceable sourcing from qualified Vishay manufacturing sites.

Supply support for IRLIZ44G 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-performance MOSFETs, diodes, and optoelectronics with emphasis on reliability, ruggedness, and application-specific optimization.

The IRLIZ44G belongs to Vishay's third-generation high-voltage isolated MOSFET product line, engineered specifically for commercial-industrial power conversion where thermal efficiency, safety isolation, and gate-drive simplicity are jointly critical.

FAQ

What is the maximum continuous drain current for the IRLIZ44G at 100 °C case temperature?

The IRLIZ44G supports 21 A continuous drain current at T_C = 100 °C, per its absolute maximum ratings table. This derating reflects thermal limits of the TO-220 FULLPAK package and ensures safe operation within R_thJC = 3.1 °C/W junction-to-case thermal resistance. The IRLIZ44G must be mounted to an adequately sized heatsink to maintain this current rating reliably.

Does the IRLIZ44G require a gate resistor for typical 5 V MCU drive?

Yes-the IRLIZ44G benefits from an external gate resistor (typically 4.6–25 Ω) to control dI/dt and suppress ringing, especially given its low Q_gd and fast switching. While the IRLIZ44G is logic-level compatible and can be driven directly from a 5 V GPIO, omitting a gate resistor risks overshoot, shoot-through, and EMI in hard-switched topologies. The datasheet specifies RG = 4.6 Ω for switching time characterization of the IRLIZ44G.

Can the IRLIZ44G be used in parallel configurations?

Yes-the IRLIZ44G is explicitly designed for ease of paralleling due to its positive R_DS(on) temperature coefficient and matched dynamic parameters. Parallel operation improves current handling and thermal distribution, provided layout symmetry, individual gate resistors, and Kelvin-source routing are implemented. The IRLIZ44G's low Q_g and uniform threshold voltage (1.0–2.0 V) further enhance current sharing stability across multiple devices.

What is the body diode forward voltage of the IRLIZ44G at 30 A and 25 °C?

The body diode forward voltage (V_SD) of the IRLIZ44G is rated at 2.5 V maximum at I_S = 30 A and T_J = 25 °C, with V_GS = 0 V. This parameter is critical for evaluating conduction loss during dead-time conduction in synchronous rectifiers or half-bridge configurations. The IRLIZ44G's V_SD is consistent with its low R_DS(on) design and supports efficient bidirectional current flow in bidirectional DC-DC stages.

Is the IRLIZ44G RoHS-compliant and lead-free?

Yes-the IRLIZ44G is offered in a lead (Pb)-free version designated IRLIZ44GPbF, compliant with RoHS Directive 2011/65/EU and Vishay's material categorization standards. The "PbF" suffix confirms full exemption from lead content, and the device uses matte tin plating on leads. All Vishay Siliconix documentation-including datasheet 91318-confirms Pb-free status for the IRLIZ44G ordering variant IRLIZ44GPbF.

IRLIZ44G Specifications

Product attributes: Attribute value

Manufacturer:: Vishay Siliconix

Series:: -

Package/Case:: TO-220-3 Full Pack, Isolated Tab

Packaging:: Tube

Product Status:: Active

FET Type:: N-Channel

Technology:: MOSFET (Metal Oxide)

Drain to Source Voltage (Vdss):: 60 V

Current - Continuous Drain (Id) @ 25°C:: 30A (Tc)

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

Rds On (Max) @ Id, Vgs:: 28mOhm @ 18A, 5V

Vgs(th) (Max) @ Id:: 2V @ 250µA

Gate Charge (Qg) (Max) @ Vgs:: 66 nC @ 5 V

Vgs (Max):: ±10V

Input Capacitance (Ciss) (Max) @ Vds:: 3300 pF @ 25 V

FET Feature:: -

Power Dissipation (Max):: 48W (Tc)

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

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: TO-220-3

IRLIZ44G FAQ

1.How can I place an order for IRLIZ44G through Aetrix?

Please submit a Request for Quotation (RFQ) for IRLIZ44G 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 IRLIZ44G reliable?

The price and inventory of IRLIZ44G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IRLIZ44G is usually 5 days.

3.What payment methods are accepted for IRLIZ44G?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IRLIZ44G transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for IRLIZ44G?

IRLIZ44G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your IRLIZ44G 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 IRLIZ44G?

For technical support, including IRLIZ44G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IRLIZ44G requirements.

6.How does Aetrix verify that IRLIZ44G is sourced from the original manufacturer or authorized distributors?

All IRLIZ44G 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 IRLIZ44G meets industry standards.

7.What is the process for return or replacement of IRLIZ44G?

All IRLIZ44G units undergo pre-shipment inspection (PSI). If there is an issue with IRLIZ44G, 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 IRLIZ44G part is unused and in its original packaging.

Return procedure for IRLIZ44G:

1.Submit a request within 90 days.

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

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