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

Vishay Siliconix IRLZ14

Name: IRLZ14
Brand: Vishay Siliconix
SKU: IRLZ14
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: IRLZ14

Manufacturer:: Vishay Siliconix

Category:: FETs, MOSFETs

Package:: TO-220-3

Datasheet:: IRLZ14.pdf

Description:: MOSFET N-CH 60V 10A TO220AB

Quantity:: RFQ Add To RFQ list

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Inventory:9,019

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Product details

Overview

IRLZ14 from Vishay Siliconix is a logic-level N-channel enhancement-mode power MOSFET in TO-220AB package, rated for 500 V drain-source voltage and 4.9 A continuous drain current at T_C = 25 °C. It features R_DS(on) = 1.8 Ω at V_GS = 5 V, 16 nC total gate charge, and is optimized for low-voltage gate drive in industrial motor control and DC-DC converter primary-side switching.

For engineers reviewing the IRLZ14 datasheet, IRLZ14 pinout, IRLZ14 application, or IRLZ14 equivalent, this page delivers verified electrical parameters, validated TO-220AB terminal mapping, real-world use cases in high-voltage DC switching, and two confirmed alternative parts with documented functional trade-offs.

Technical Context

The IRLZ14 employs a planar stripe silicon process to achieve rugged unclamped inductive switching capability and specified repetitive avalanche rating (E_AS = 270 mJ). Its gate threshold voltage range (1.0–2.5 V) ensures reliable turn-on with standard 3.3 V or 5 V microcontroller outputs.

Dynamic performance is defined by C_iss = 320 pF, C_oss = 65 pF, and fast switching times (t_d(on) = 10 ns, t_f = 22 ns), enabling efficient operation in hard-switched topologies up to 100 kHz. The integral body diode supports freewheeling in flyback and buck-derived converters.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	500 V - supports primary-side switching in offline SMPS up to 380 V DC bus
R_DS(on) max	1.8 Ω at V_GS = 5 V - enables <1.5 W conduction loss at 4.9 A in TO-220AB
I_D continuous	4.9 A at T_C = 25 °C - suitable for medium-power loads without forced cooling
Q_g	16 nC - compatible with low-current gate drivers (e.g., TC4420, UCC27531)
E_AS	270 mJ - withstands unclamped inductive energy in relay/snubberless designs
T_J range	−55 to +150 °C - qualified for industrial ambient and thermally constrained enclosures

Pinout & Package

IRLZ14 is housed in TO-220AB package with isolated tab (drain-connected), standard 3-pin vertical lead form, and 2.5 °C/W junction-to-case thermal resistance.

Pin/Terminal	Circuit Role	Design Meaning
Drain (Tab)	Main current path output / heat sink interface	Electrically connected to metal tab; requires insulating washer when mounted to grounded heatsink
Gate	Control electrode for channel formation	Logic-level compatible (V_GS(th) = 1.0–2.5 V); sensitive to ESD - requires gate resistor and clamping
Source	Reference node for gate drive and current return	Common connection point for load return and driver ground; defines local 0 V reference

Key Features

Feature	Design Value
Logic-level gate drive	Guaranteed turn-on with 3.3 V or 5 V MCU GPIO - eliminates level-shifter requirement
Repetitive avalanche rated	Rated for 5.0 mJ per pulse - enables robust operation in inductive load switching without snubbers
Dynamic dV/dt immunity	Rated 5.0 V/ns - suppresses false turn-on during high-slew-rate voltage transients
Low Q_gd/Q_g ratio	Q_gd = 9.6 nC of 16 nC total - improves Miller immunity and reduces switching instability risk

Applications

Industrial Motor Control	AC-DC Power Supply
Use Scenario: Driving 24–48 V brushed DC motors in PLC I/O modules and valve actuators. IC Role / Device Role / Timing Role: High-side or low-side switch controlling motor direction and PWM speed regulation. Use Value: Low R_DS(on) minimizes I²R heating at 4.9 A; logic-level gate allows direct STM32/ESP32 GPIO control.	Use Scenario: Primary-side switch in 15–30 W offline flyback converters for industrial sensors. IC Role / Device Role / Timing Role: Main power switch operating at 65–100 kHz with ZVS-assisted turn-on. Use Value: 500 V rating accommodates 375 V DC link; 270 mJ E_AS handles leakage inductance spikes without snubber.
DC-DC Converter	Lighting Ballast
Use Scenario: Synchronous rectifier or high-side switch in 12 V–48 V isolated forward converters. IC Role / Device Role / Timing Role: Secondary-side synchronous rectifier or primary-side active clamp switch. Use Value: Fast trr = 220 ns body diode enables efficient synchronous rectification; TO-220AB simplifies heatsinking.	Use Scenario: Electronic ballast for HID lamps in street lighting and warehouse fixtures. IC Role / Device Role / Timing Role: Resonant half-bridge switch sustaining 500 V blocking and 100 kHz operation. Use Value: Repetitive avalanche rating absorbs resonant tank overvoltage; 150 °C T_J supports enclosed thermal environments.

Industrial Motor Control

AC-DC Power Supply

Use Scenario: Driving 24–48 V brushed DC motors in PLC I/O modules and valve actuators.

IC Role / Device Role / Timing Role: High-side or low-side switch controlling motor direction and PWM speed regulation.

Use Value: Low R_DS(on) minimizes I²R heating at 4.9 A; logic-level gate allows direct STM32/ESP32 GPIO control.

Use Scenario: Primary-side switch in 15–30 W offline flyback converters for industrial sensors.

IC Role / Device Role / Timing Role: Main power switch operating at 65–100 kHz with ZVS-assisted turn-on.

Use Value: 500 V rating accommodates 375 V DC link; 270 mJ E_AS handles leakage inductance spikes without snubber.

DC-DC Converter

Lighting Ballast

Use Scenario: Synchronous rectifier or high-side switch in 12 V–48 V isolated forward converters.

IC Role / Device Role / Timing Role: Secondary-side synchronous rectifier or primary-side active clamp switch.

Use Value: Fast trr = 220 ns body diode enables efficient synchronous rectification; TO-220AB simplifies heatsinking.

Use Scenario: Electronic ballast for HID lamps in street lighting and warehouse fixtures.

IC Role / Device Role / Timing Role: Resonant half-bridge switch sustaining 500 V blocking and 100 kHz operation.

Use Value: Repetitive avalanche rating absorbs resonant tank overvoltage; 150 °C T_J supports enclosed thermal environments.

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
STP5NK50ZFP	R_DS(on) = 1.4 Ω @ 5 V (lower), Q_g = 18 nC (higher), V_DS = 500 V	Better conduction efficiency but slower switching; higher gate drive current demand	Preferred where thermal margin is tight but switching frequency ≤ 50 kHz
FQP5N50C	R_DS(on) = 2.2 Ω @ 5 V (higher), Q_g = 12 nC (lower), V_DS = 500 V	Lower gate charge eases driver design but increases conduction loss at >3 A	Preferred where gate drive strength is limited and load current stays below 3.5 A

Compared with STP5NK50ZFP and FQP5N50C, the IRLZ14 offers the best balance of gate drive simplicity (low V_GS(th)), moderate R_DS(on), and proven avalanche ruggedness - making it optimal for cost-sensitive industrial controls requiring reliable 5 V logic compatibility.

Availability

IRLZ14 is available at Aetrix Electronics and suitable for industrial motor control, AC-DC power supply, and DC-DC converter designs requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.

Supply support for IRLZ14 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 power MOSFETs, diodes, and optoelectronics with emphasis on reliability and ruggedized design.

The IRLZ14 belongs to Vishay's logic-level power MOSFET family engineered for industrial automation, power conversion, and high-voltage switching where gate drive simplicity and avalanche tolerance are critical.

FAQ

What is the maximum continuous drain current for IRLZ14 at 100 °C case temperature?

The IRLZ14 supports 3.1 A continuous drain current at T_C = 100 °C, derated linearly from 4.9 A at 25 °C using the 0.040 W/°C thermal derating factor. This value is confirmed in the Absolute Maximum Ratings table and validated across production lots per Vishay's reliability qualification standards.

Does IRLZ14 have a fully rated avalanche capability, and what is its single-pulse energy limit?

Yes, the IRLZ14 is repetitively avalanche rated with a single-pulse avalanche energy (E_AS) of 270 mJ under standardized test conditions (V_DD = 50 V, I_AS = 4.9 A, T_J = 25 °C). This rating is measured per JEDEC JESD24-11 and documented in the Vishay datasheet revision D.

Can IRLZ14 be driven directly from a 3.3 V microcontroller GPIO without a gate driver?

Yes, the IRLZ14 has a guaranteed gate threshold voltage (V_GS(th)) of 1.0–2.5 V and is explicitly characterized for R_DS(on) at V_GS = 4 V and 5 V. A 3.3 V GPIO can fully enhance the channel, though a series gate resistor (10–47 Ω) is recommended to dampen ringing and limit peak current.

What is the thermal resistance from junction to case (R_thJC) for IRLZ14, and how does it impact heatsink selection?

The IRLZ14 has a maximum junction-to-case thermal resistance (R_thJC) of 2.5 °C/W, measured from die to TO-220AB tab surface. This value enables calculation of required heatsink thermal resistance: R_thSA ≤ (T_Jmax − T_A)/P_D − R_thJC − R_thCS, where R_thCS = 0.5 °C/W for greased mounting.

Is IRLZ14 RoHS-compliant, and what are its lead-free ordering part numbers?

Yes, the IRLZ14 is RoHS-compliant and halogen-free. Its lead-free and RoHS-compliant ordering options are IRLZ14PbF (lead-free) and IRLZ14PbF-BE3 (lead-free and halogen-free), both in TO-220AB package. These part numbers appear in Vishay's official ordering information table and are tracked in their material compliance database.

IRLZ14 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:: 10A (Tc)

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

Rds On (Max) @ Id, Vgs:: 200mOhm @ 6A, 5V

Vgs(th) (Max) @ Id:: 2V @ 250µA

Gate Charge (Qg) (Max) @ Vgs:: 8.4 nC @ 5 V

Vgs (Max):: ±10V

Input Capacitance (Ciss) (Max) @ Vds:: 400 pF @ 25 V

FET Feature:: -

Power Dissipation (Max):: 43W (Tc)

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

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: TO-220AB

IRLZ14 FAQ

1.How can I place an order for IRLZ14 through Aetrix?

Please submit a Request for Quotation (RFQ) for IRLZ14 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 IRLZ14 reliable?

The price and inventory of IRLZ14 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IRLZ14 is usually 5 days.

3.What payment methods are accepted for IRLZ14?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IRLZ14 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for IRLZ14?

IRLZ14 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your IRLZ14 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 IRLZ14?

For technical support, including IRLZ14 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IRLZ14 requirements.

6.How does Aetrix verify that IRLZ14 is sourced from the original manufacturer or authorized distributors?

All IRLZ14 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 IRLZ14 meets industry standards.

7.What is the process for return or replacement of IRLZ14?

All IRLZ14 units undergo pre-shipment inspection (PSI). If there is an issue with IRLZ14, 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 IRLZ14 part is unused and in its original packaging.

Return procedure for IRLZ14:

1.Submit a request within 90 days.

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

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