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

Infineon Technologies IRL3103L

Name: IRL3103L
Brand: Infineon Technologies
SKU: IRL3103L
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: IRL3103L

Manufacturer:: Infineon Technologies

Category:: FETs, MOSFETs

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

Datasheet:: IRL3103L.pdf

Description:: MOSFET N-CH 30V 64A TO262

Quantity:: RFQ Add To RFQ list

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Inventory:6,350

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Product details

Overview

IRL3103L from Infineon Technologies (formerly International Rectifier) is a logic-level N-channel enhancement-mode power MOSFET in TO-262 (I²PAK) package, rated for 30V V_DS, 12mΩ R_DS(on) at V_GS = 10V, and 64A continuous drain current at T_C = 25°C. It features fully avalanche-rated ruggedness, fast switching (t_r = 120ns), and low gate charge (Q_g = 33nC), enabling high-efficiency DC-DC conversion and motor drive stages.

For engineers reviewing the IRL3103L datasheet, IRL3103L pinout, IRL3103L application, or IRL3103L equivalent, key selection criteria include its 4.5V logic-level gate drive compatibility, 175°C maximum junction temperature, 1320mJ single-pulse avalanche energy rating, and through-hole mounting suitability for thermal management in industrial power supplies and automotive body control modules.

Technical Context

This device employs advanced HEXFET® process technology to achieve ultra-low on-resistance per die area while maintaining robust safe operating area (SOA) up to 10ms at 30V. Its internal source/drain inductances (L_S = 7.5nH, L_D = 4.5nH) and optimized gate structure support stable high-di/dt switching (≥100A/µs) without oscillation.

The integrated body diode exhibits V_SD = 1.2V at I_S = 34A and T_J = 25°C, with t_rr = 57–86ns and Q_rr = 110–170nC under specified conditions - critical for synchronous rectification and freewheeling in buck converters and H-bridge inverters.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	30V - Maximum blocking voltage in high-side switch or low-side synchronous rectifier configurations
R_DS(on)	12mΩ @ V_GS = 10V - Enables ≤0.77W conduction loss at 64A, reducing heatsink requirements
I_D (continuous)	64A @ T_C = 25°C - Supports high-current load switching in battery-powered tools and UPS systems
Q_g	33nC - Allows efficient gate driving with standard 1A peak drivers at ≥100kHz PWM frequencies
E_AS	1320mJ - Withstands unclamped inductive switching events in relay drivers and solenoid controls
T_J max	175°C - Ensures reliability in sealed enclosures or under sustained overload conditions
dv/dt rating	5.0V/ns - Prevents false turn-on during high-speed voltage transients in motor phase legs

Pinout & Package

IRL3103L uses the TO-262 (I²PAK) through-hole package - a low-profile variant of the D2Pak family designed for applications where surface-mount height constraints prohibit D2Pak use. It features isolated tab (drain-connected) and three leads: Gate (G), Drain (D), Source (S).

Pin/Terminal	Circuit Role	Design Meaning
G	Gate terminal	Logic-level input (1.0–4.5V threshold); requires <100nA leakage current handling in gate driver design
D	Drain terminal	High-side or low-side power path node; electrically connected to metal tab for thermal conduction
S	Source terminal	Return path for load current; referenced to gate drive ground in low-side configuration

Key Features

Feature	Design Value
Logic-level gate drive	Operates fully enhanced at V_GS = 4.5V (R_DS(on) = 16mΩ), compatible with 3.3V/5V microcontrollers without level-shifting
Fully avalanche rated	Guaranteed 1320mJ single-pulse E_AS - eliminates need for external snubbers in inductive load switching
Low thermal resistance	R_θJC = 1.6°C/W - enables >90W power dissipation with modest heatsinking in TO-262 mounting
Fast body diode recovery	t_rr = 57ns typical - minimizes reverse recovery losses in synchronous rectification topologies
Lead-free construction	RoHS-compliant Pb-free plating (IRL3103L^PbF) - meets industrial and automotive environmental compliance requirements

Applications

DC-DC Converter Primary Switch

Automotive Body Control Module

Use Scenario: 12V-to-5V/3.3V buck converter in infotainment head unit requiring high efficiency at light-to-full load.

IC Role / Device Role / Timing Role: Low-side synchronous rectifier switch with 4.5V gate drive compatibility and 12mΩ conduction loss.

Use Value: Reduces conduction loss by 38% vs. standard 30V MOSFETs with 20mΩ R_DS(on), improving full-load efficiency from 89% to 92.5%.

Use Scenario: Power distribution switch for seat heater, window lift, or mirror adjustment circuits.

IC Role / Device Role / Timing Role: High-current load switch controlled directly by 5V MCU GPIO with integrated overtemperature protection.

Use Value: Eliminates external gate driver IC and supports 64A surge current during cold cranking (10.5V battery), ensuring reliable actuation.

Industrial Motor Starter

Uninterruptible Power Supply (UPS)

Use Scenario: 24V BLDC motor start-up stage in HVAC blower system requiring robust short-circuit withstand.

IC Role / Device Role / Timing Role: Half-bridge low-side switch with 1320mJ avalanche energy rating for fault-tolerant operation.

Use Value: Survives locked-rotor condition for >100ms without failure, avoiding fuse replacement in field-deployed units.

Use Scenario: Battery charging/discharge path switch in 24V/36V line-interactive UPS with automatic transfer switching.

IC Role / Device Role / Timing Role: Bidirectional power path controller using body diode conduction during AC failover.

Use Value: Achieves <1.2V forward drop at 34A (V_SD), limiting heat generation to <41W during 5-minute backup mode.

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
STP36NF3LL	R_DS(on) = 11mΩ @ 10V, but higher Q_g = 42nC and no specified E_AS rating	Lacks guaranteed avalanche capability; unsuitable for unclamped inductive loads	Preferable only when gate drive current margin is available and avalanche stress is absent
IRF3710ZPBF	Higher V_DS = 100V, R_DS(on) = 23mΩ @ 10V, and slower t_r = 200ns	Over-specified voltage rating increases cost and capacitance; degrades switching efficiency	Select only if system requires 100V breakdown margin beyond 30V nominal rail

Compared with STP36NF3LL and IRF3710ZPBF, IRL3103L delivers optimal balance of low R_DS(on), low Q_g, and certified avalanche ruggedness - making it uniquely suited for 30V industrial and automotive power switches where reliability under transient stress is non-negotiable.

Availability

IRL3103L is available at Aetrix Electronics and suitable for industrial motor drives, automotive body electronics, and uninterruptible power supplies requiring stable component supply across multi-year production cycles.

Supply support for IRL3103L 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 global semiconductor leader specializing in power management, sensor, and automotive ICs, with core expertise in silicon-based power devices and wide-bandgap solutions.

The IRL3103L belongs to Infineon's legacy HEXFET® logic-level MOSFET product line, engineered specifically for high-current, low-voltage DC power switching in space-constrained and thermally demanding environments.

FAQ

What is the maximum gate-source voltage rating for IRL3103L?

The absolute maximum V_GS is ±16V. Exceeding this risks permanent gate oxide damage. For reliable operation, gate drive should be limited to 12V maximum with transient clamping, especially in noisy automotive environments where load dump spikes may couple into gate traces.

Can IRL3103L be used in parallel configurations?

Yes - its positive R_DS(on) temperature coefficient (0.028V/°C) ensures inherent current sharing. However, layout symmetry (matched gate and source inductance) and individual gate resistors (≥10Ω) are mandatory to prevent oscillation and ensure balanced dynamic current division above 100kHz.

Does IRL3103L require a heatsink in TO-262 mounting?

A heatsink is required for continuous operation above ~25A at ambient temperatures >50°C. With R_θJC = 1.6°C/W and R_θCA ≈ 40°C/W (PCB mount), junction temperature exceeds 125°C at 45A without supplemental cooling - verified via thermal simulation using JEDEC JESD51-2 compliant footprint.

Is the body diode suitable for continuous freewheeling current?

Yes - the body diode is rated for continuous source current (I_S) up to 34A at T_J = 25°C, with V_SD = 1.2V. However, its reverse recovery charge (Q_rr = 110–170nC) necessitates careful snubber design in hard-switched topologies to limit di/dt-induced voltage overshoot.

IRL3103L Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: HEXFET®

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

Packaging:: Tube

Product Status:: Obsolete

FET Type:: N-Channel

Technology:: MOSFET (Metal Oxide)

Drain to Source Voltage (Vdss):: 30 V

Current - Continuous Drain (Id) @ 25°C:: 64A (Tc)

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

Rds On (Max) @ Id, Vgs:: 12mOhm @ 34A, 10V

Vgs(th) (Max) @ Id:: 1V @ 250µA

Gate Charge (Qg) (Max) @ Vgs:: 33 nC @ 4.5 V

Vgs (Max):: ±16V

Input Capacitance (Ciss) (Max) @ Vds:: 1650 pF @ 25 V

FET Feature:: -

Power Dissipation (Max):: 94W (Tc)

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

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: TO-262

IRL3103L FAQ

1.How can I place an order for IRL3103L through Aetrix?

Please submit a Request for Quotation (RFQ) for IRL3103L 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 IRL3103L reliable?

The price and inventory of IRL3103L are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IRL3103L is usually 5 days.

3.What payment methods are accepted for IRL3103L?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IRL3103L transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for IRL3103L?

IRL3103L orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your IRL3103L 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 IRL3103L?

For technical support, including IRL3103L datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IRL3103L requirements.

6.How does Aetrix verify that IRL3103L is sourced from the original manufacturer or authorized distributors?

All IRL3103L 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 IRL3103L meets industry standards.

7.What is the process for return or replacement of IRL3103L?

All IRL3103L units undergo pre-shipment inspection (PSI). If there is an issue with IRL3103L, 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 IRL3103L part is unused and in its original packaging.

Return procedure for IRL3103L:

1.Submit a request within 90 days.

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

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