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

Vishay Siliconix IRL3202L

Name: IRL3202L
Brand: Vishay Siliconix
SKU: IRL3202L
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: IRL3202L

Manufacturer:: Vishay Siliconix

Category:: FETs, MOSFETs

Package:: TO-262-3 Long Leads, I2PAK, TO-262AA

Datasheet:: IRL3202L.pdf

Description:: MOSFET N-CH 20V 48A TO262-3

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Product details

Overview

IRL3202L from International Rectifier is a logic-level N-channel Power MOSFET in TO-220AB package, designed for high-efficiency CPU core DC-DC converters. It delivers 48 A continuous drain current at V_GS = 4.5 V, features R_DS(on) = 16 mΩ at V_GS = 7.0 V and ID = 29 A, and supports avalanche energy up to 270 mJ - enabling robust operation in synchronous buck converter high-side switching.

For engineers reviewing the IRL3202L datasheet, IRL3202L pinout, IRL3202L application, or IRL3202L equivalent, key selection criteria include gate drive compatibility with 4.5 V logic, thermal performance under pulsed load conditions, body diode recovery characteristics (t_rr = 68 ns), and safe operating area limits for transient current handling in PC power delivery systems.

Technical Context

The IRL3202L uses an optimized gate oxide and advanced HEXFET process to achieve low R_DS(on) at 4.5 V gate drive, targeting CPU VRM applications where fast switching and minimal conduction loss are critical. Its thermal resistance R_θJC = 1.8 °C/W enables efficient heat transfer to heatsinks in compact TO-220 layouts.

It integrates a robust intrinsic body diode with V_SD = 1.3 V at I_S = 29 A and t_rr = 68 ns, supporting synchronous rectification and reverse recovery in high-frequency buck topologies. The device is rated for junction temperatures from –55 °C to +150 °C and withstands repetitive avalanche stress up to E_AR = 6.9 mJ.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DSS	20 V - Maximum drain-source voltage; defines upper limit of input rail in low-voltage CPU core supplies.
R_DS(on)	16 mΩ @ V_GS = 7.0 V, I_D = 29 A - Enables <1 W conduction loss at 48 A, critical for efficiency in 1–2 V output rails.
I_D (continuous)	48 A @ T_C = 25 °C, V_GS = 4.5 V - Supports high-current phases in multi-phase VRMs without external parallel devices.
E_AS	270 mJ - Single-pulse avalanche capability allows reliable operation during inductive turn-off transients in non-synchronous designs.
t_r/t_f	100 ns / 82 ns - Fast switching minimizes overlap loss in synchronous buck converters operating above 300 kHz.
Q_g	43 nC - Gate charge compatible with standard PWM controller drivers; enables efficient 4.5 V gate drive without boost circuitry.
C_iss	2000 pF - Input capacitance impacts gate driver sizing and switching speed stability under varying load conditions.

Pinout & Package

IRL3202L is housed in a TO-220AB package with exposed drain tab for thermal and electrical connection. The case serves as the drain terminal (pins 2 and 4), while gate and source are isolated on leads 1 and 3 respectively.

Pin/Terminal	Circuit Role	Design Meaning
1 - GATE	Control electrode	Accepts 4.5–7.0 V logic-level drive; low Q_g ensures fast, low-loss turn-on in VRM gate drivers.
2 - DRAIN	Main current path (high-side)	Connected to input rail; electrically and thermally tied to metal tab for direct heatsink mounting.
3 - SOURCE	Reference node for gate drive	Common return for gate driver supply and current sensing; forms low-inductance loop with PCB layout.
4 - DRAIN	Secondary drain connection	Redundant drain lead improves current sharing and reduces package inductance in high-di/dt switching.

Key Features

Feature	Design Value
Logic-level gate drive	Operates fully enhanced at V_GS = 4.5 V - eliminates need for gate boosters in modern CPU VRMs.
Optimized R_DS(on)-Q_g tradeoff	16 mΩ/43 nC ratio balances conduction and switching losses for 300–600 kHz buck operation.
Robust body diode	V_SD = 1.3 V, t_rr = 68 ns - supports non-synchronous operation and aids layout flexibility during prototyping.
Avalanche-rated design	E_AS = 270 mJ - withstands inductive energy spikes during hard-switching events without failure.
TO-220AB thermal performance	R_θJC = 1.8 °C/W - enables >50 W dissipation with standard heatsinking, suitable for single-phase VRM designs.

Applications

CPU Core Voltage Regulator	Low-Voltage DC-DC Converter
Use Scenario: High-current, fast-transient response power stage in desktop/laptop CPU VRMs delivering 0.8–1.5 V at up to 100 A per phase. IC Role / Device Role / Timing Role: High-side synchronous rectifier switch with logic-level gate control and low R_DS(on). Use Value: Reduces conduction loss by >30% vs. standard 10 V gate MOSFETs, improving full-load efficiency by 1.2–1.8% in 12 V input systems.	Use Scenario: Point-of-load regulator in telecom baseband cards requiring stable 1.2 V/20 A output with tight ripple and dynamic response. IC Role / Device Role / Timing Role: Primary switching element in 500 kHz synchronous buck converter with integrated controller. Use Value: Fast t_r/t_f and low Q_g minimize dead-time losses and enable precise duty-cycle control under load transients.
Industrial Motor Control Driver	Automotive Body Control Module
Use Scenario: Half-bridge gate driver stage in BLDC motor controllers for HVAC blowers and pump modules operating at 24 V bus. IC Role / Device Role / Timing Role: Low-side switch with fast body diode recovery and avalanche tolerance for inductive flyback protection. Use Value: t_rr = 68 ns and E_AR = 6.9 mJ ensure reliable commutation without snubbers in 20 kHz PWM-driven systems.	Use Scenario: Load switch for 12 V accessory circuits (e.g., LED lighting, window lift) with overcurrent and thermal protection. IC Role / Device Role / Timing Role: High-current discrete load switch controlled directly by microcontroller GPIO. Use Value: V_GS(th) = 0.7 V ensures turn-on with 3.3 V MCU outputs; R_DS(on) < 20 mΩ limits voltage drop to <100 mV at 5 A.

CPU Core Voltage Regulator

Low-Voltage DC-DC Converter

Use Scenario: High-current, fast-transient response power stage in desktop/laptop CPU VRMs delivering 0.8–1.5 V at up to 100 A per phase.

IC Role / Device Role / Timing Role: High-side synchronous rectifier switch with logic-level gate control and low R_DS(on).

Use Value: Reduces conduction loss by >30% vs. standard 10 V gate MOSFETs, improving full-load efficiency by 1.2–1.8% in 12 V input systems.

Use Scenario: Point-of-load regulator in telecom baseband cards requiring stable 1.2 V/20 A output with tight ripple and dynamic response.

IC Role / Device Role / Timing Role: Primary switching element in 500 kHz synchronous buck converter with integrated controller.

Use Value: Fast t_r/t_f and low Q_g minimize dead-time losses and enable precise duty-cycle control under load transients.

Industrial Motor Control Driver

Automotive Body Control Module

Use Scenario: Half-bridge gate driver stage in BLDC motor controllers for HVAC blowers and pump modules operating at 24 V bus.

IC Role / Device Role / Timing Role: Low-side switch with fast body diode recovery and avalanche tolerance for inductive flyback protection.

Use Value: t_rr = 68 ns and E_AR = 6.9 mJ ensure reliable commutation without snubbers in 20 kHz PWM-driven systems.

Use Scenario: Load switch for 12 V accessory circuits (e.g., LED lighting, window lift) with overcurrent and thermal protection.

IC Role / Device Role / Timing Role: High-current discrete load switch controlled directly by microcontroller GPIO.

Use Value: V_GS(th) = 0.7 V ensures turn-on with 3.3 V MCU outputs; R_DS(on) < 20 mΩ limits voltage drop to <100 mV at 5 A.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
IRL3803PBF	R_DS(on) = 12 mΩ @ V_GS = 4.5 V; higher Q_g = 52 nC; same TO-220AB package.	Better conduction loss but slower switching; suited for lower-frequency (<300 kHz), higher-current VRMs.	Select when minimizing I²R loss dominates over switching loss - e.g., 12 V input, 1.0 V output, 60 A steady-state loads.
STP36NF06L	R_DS(on) = 18 mΩ @ V_GS = 4.5 V; lower E_AS = 190 mJ; different pinout (G-D-S).	Reduced avalanche margin; requires PCB redesign due to reversed drain/source lead positions.	Consider only if cost sensitivity outweighs reliability requirements in non-critical industrial loads.

Compared with IRL3202L, IRL3803PBF offers lower on-resistance but higher gate charge, increasing driver losses at high frequency; STP36NF06L provides similar R_DS(on) but inferior avalanche rating and incompatible pinout - making IRL3202L the optimal balance of switching speed, ruggedness, and layout compatibility for CPU VRM use.

Availability

IRL3202L is available at Aetrix Electronics and suitable for CPU core voltage regulation, point-of-load DC-DC conversion, and industrial motor control applications requiring stable component supply and long-term production continuity.

Supply support for IRL3202L 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

International Rectifier (now part of Infineon Technologies) is a pioneer in power semiconductor design, specializing in high-efficiency MOSFETs, IGBTs, and driver ICs for power conversion systems.

The IRL3202L belongs to the HEXFET® logic-level MOSFET family, engineered specifically for CPU core DC-DC converters where low gate-threshold voltage, fast switching, and thermal robustness are essential for high-density, high-efficiency power delivery.

FAQ

What is the maximum continuous drain current for IRL3202L at 100°C case temperature?

The IRL3202L supports 30 A continuous drain current at T_C = 100°C and V_GS = 4.5 V. This derating reflects thermal limitations of the TO-220AB package and must be verified against actual heatsink performance and ambient conditions in the final IRL3202L application layout.

Does IRL3202L support 3.3 V gate drive?

The IRL3202L has a gate threshold voltage V_GS(th) of 0.70 V minimum, but its R_DS(on) is not characterized below V_GS = 4.5 V. At 3.3 V, the device operates in weak inversion with significantly elevated on-resistance - IRL3202L is not recommended for reliable switching at 3.3 V gate drive.

What is the avalanche energy rating of IRL3202L and how is it tested?

The IRL3202L is rated for 270 mJ single-pulse avalanche energy (E_AS) with starting junction temperature of 25°C, L = 0.64 mH, R_G = 25 Ω, and I_AS = 29 A. This rating validates ruggedness during inductive turn-off faults and is measured per JEDEC standard JESD24-1, not intended for repetitive operation.

Can IRL3202L be used in synchronous rectification configurations?

Yes - the IRL3202L body diode has t_rr = 68 ns and Q_rr = 130 nC, enabling use as a synchronous rectifier in low-voltage buck converters. However, its V_SD = 1.3 V is higher than Schottky diodes; optimal performance requires precise timing control to avoid cross-conduction in the IRL3202L-based synchronous stage.

What is the thermal resistance from junction to case for IRL3202L?

The IRL3202L has a maximum junction-to-case thermal resistance R_θJC of 1.8 °C/W. This value assumes proper mounting with thermal grease and a flat heatsink surface; actual system-level R_θJA depends on PCB copper area, airflow, and enclosure design - critical for validating thermal margin in the IRL3202L implementation.

IRL3202L Specifications

Product attributes: Attribute value

Manufacturer:: Vishay Siliconix

Series:: -

Package/Case:: TO-262-3 Long Leads, I2PAK, TO-262AA

Packaging:: Tube

Product Status:: Discontinued at Digi-Key

FET Type:: N-Channel

Technology:: MOSFET (Metal Oxide)

Drain to Source Voltage (Vdss):: 20 V

Current - Continuous Drain (Id) @ 25°C:: 48A (Tc)

Drive Voltage (Max Rds On, Min Rds On):: 4.5V, 7V

Rds On (Max) @ Id, Vgs:: 16mOhm @ 29A, 7V

Vgs(th) (Max) @ Id:: 700mV @ 250µA (Min)

Gate Charge (Qg) (Max) @ Vgs:: 43 nC @ 4.5 V

Vgs (Max):: ±10V

Input Capacitance (Ciss) (Max) @ Vds:: 2000 pF @ 15 V

FET Feature:: -

Power Dissipation (Max):: 69W (Tc)

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

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: TO-262-3

IRL3202L FAQ

1.How can I place an order for IRL3202L through Aetrix?

Please submit a Request for Quotation (RFQ) for IRL3202L 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 IRL3202L reliable?

The price and inventory of IRL3202L are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IRL3202L is usually 5 days.

3.What payment methods are accepted for IRL3202L?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IRL3202L transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for IRL3202L?

IRL3202L orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your IRL3202L 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 IRL3202L?

For technical support, including IRL3202L datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IRL3202L requirements.

6.How does Aetrix verify that IRL3202L is sourced from the original manufacturer or authorized distributors?

All IRL3202L 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 IRL3202L meets industry standards.

7.What is the process for return or replacement of IRL3202L?

All IRL3202L units undergo pre-shipment inspection (PSI). If there is an issue with IRL3202L, 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 IRL3202L part is unused and in its original packaging.

Return procedure for IRL3202L:

1.Submit a request within 90 days.

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

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