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

Infineon Technologies IRL3716S

Name: IRL3716S
Brand: Infineon Technologies
SKU: IRL3716S
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: IRL3716S

Manufacturer:: Infineon Technologies

Category:: FETs, MOSFETs

Package:: TO-263-3, D2PAK (2 Leads + Tab), TO-263AB

Datasheet:: IRL3716S.pdf

Description:: MOSFET N-CH 20V 180A D2PAK

Quantity:: RFQ Add To RFQ list

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Product details

Overview

IRL3716S from Infineon Technologies is a 20 V, 4.0 mΩ (at V_GS = 4.5 V), 180 A N-channel D2PAK-7L HEXFET® Power MOSFET optimized for high-frequency synchronous rectification in isolated DC-DC converters and buck regulators for telecom and server power supplies. It features ultra-low gate charge (Q_g = 53 nC typ), fast switching (t_r = 140 ns), and fully characterized avalanche capability (E_AS = 640 mJ).

For engineers reviewing the IRL3716S datasheet, IRL3716S pinout, IRL3716S application, or IRL3716S equivalent, key selection criteria include R_DS(on) at 4.5 V, pulsed drain current (720 A), thermal resistance (R_θJC = 0.72 °C/W), and body diode reverse recovery performance (Q_rr = 87 nC) in high-efficiency, high-density power conversion designs.

Technical Context

The IRL3716S employs a trench-gate, silicon-based HEXFET architecture with optimized cell pitch and low-inductance D2PAK-7L packaging to minimize conduction and switching losses. Its 4.0 mΩ R_DS(on) at 4.5 V enables efficient operation directly from 5 V or 3.3 V logic-level gate drivers without level-shifting.

It supports unclamped inductive switching with rated avalanche energy of 640 mJ and withstands repetitive 72 A avalanche current. The device's C_iss/C_oss ratio (5090 pF / 3440 pF) and low Q_gd/Q_gs (24 nC / 17 nC) support stable hard-switching up to several hundred kHz in synchronous rectifier topologies.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	20 V - Maximum blocking voltage compatible with 12 V input rails and low-voltage synchronous rectification.
R_DS(on) @ V_GS = 4.5 V	4.0 mΩ max - Enables <1 W conduction loss at 180 A DC, critical for high-current CPU VRMs.
I_D @ T_C = 25°C	180 A - Sustains full-load current in single-phase 200 W+ buck stages without parallel devices.
Q_g	53 nC typ - Reduces gate drive power and allows use of low-power 5 V microcontroller GPIOs.
R_θJC	0.72 °C/W - Supports >200 W continuous dissipation with standard heatsinking (ΔT = 150°C).
E_AS	640 mJ - Withstands single-pulse inductive energy in hot-swap and OR-ing fault conditions.
t_r/t_f	140 ns / 36 ns - Enables clean zero-voltage switching (ZVS) transitions in resonant topologies.

Pinout & Package

IRL3716S uses the TO-220AB-compatible D2PAK-7L (7-lead) surface-mount package with exposed drain pad for enhanced thermal performance. The package includes dual drain leads (pins 2 and 4) and a Kelvin source connection (pin 3) to minimize source inductance during high-di/dt switching.

Pin/Terminal	Circuit Role	Design Meaning
1	Gate	Control terminal; low input capacitance (C_iss = 5090 pF) reduces driver loading.
2	Drain	Main power output path; electrically tied to exposed backside copper for thermal conduction.
3	Source (Kelvin)	Low-inductance sense path for accurate gate-source voltage control during fast switching.
4	Drain (redundant)	Parallel drain connection to reduce current density and improve thermal distribution across package.

Key Features

Feature	Design Value
Logic-level gate drive	Operates fully enhanced at V_GS = 4.5 V, eliminating need for external gate drivers in 5 V systems.
Ultra-low R_DS(on)	4.0 mΩ at 4.5 V ensures <0.7 W conduction loss at 130 A (100°C case), improving system efficiency by ≥0.5%.
Enhanced body diode	Q_rr = 87 nC and t_rr = 180 ns enable low-loss freewheeling in synchronous buck converters.
Avalanche-rated	640 mJ single-pulse E_AS provides robustness against inductive turn-off transients in OR-ing and hot-swap circuits.
Thermally optimized package	R_θJC = 0.72 °C/W allows direct mounting to PCB copper planes or heatsinks without thermal interface material.

Applications

Telecom DC-DC Converters

Server CPU Voltage Regulators

Use Scenario: High-frequency (300–600 kHz) isolated forward or LLC converters delivering 48 V to 12 V/5 V intermediate bus in 48 V telecom systems.

IC Role / Device Role: Synchronous rectifier MOSFET on secondary side, replacing Schottky diodes to reduce conduction loss and improve efficiency.

Use Value: 4.0 mΩ R_DS(on) cuts rectifier loss by >60% vs. 40 V Schottky, enabling >95% converter efficiency at full load.

Use Scenario: Multiphase buck converters supplying 0.8–1.2 V at up to 200 A to modern x86 and ARM processors in data center servers.

IC Role / Device Role: High-side or low-side power switch in each phase, operating with 3.3 V or 5 V gate drive from digital PWM controller.

Use Value: Low Q_g (53 nC) and fast t_r/t_f allow tight dead-time control and minimize shoot-through risk at >1 MHz switching.

Active OR-ing Circuits

Industrial 24 V Power Supplies

Use Scenario: Redundant 12 V or 24 V power inputs in industrial PLCs or network switches where seamless switchover is required.

IC Role / Device Role: Back-to-back configured MOSFET acting as ideal diode to replace discrete diodes and reduce forward drop.

Use Value: V_SD = 0.93 V at 72 A (vs. 0.45 V diode drop) enables lower heat generation and eliminates reverse recovery losses.

Use Scenario: Non-isolated 24 V input to 5 V/3.3 V buck converters powering programmable logic controllers (PLCs) and motor drives.

IC Role / Device Role: Primary switching element handling continuous 130 A at 100°C case temperature in compact enclosed enclosures.

Use Value: R_θJC = 0.72 °C/W and 100 W P_D @ 100°C ensure stable operation without forced air cooling in sealed industrial housings.

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) = 5.5 mΩ @ 4.5 V; Q_g = 42 nC; TO-220AB package (3-lead, no Kelvin source)	Lacks Kelvin source and dual drain; higher R_DS(on) increases conduction loss by ~38% at 180 A	Preferred only when cost sensitivity outweighs efficiency and thermal margin requirements.
SiR872DP	R_DS(on) = 3.8 mΩ @ 4.5 V; Q_g = 62 nC; PowerPAK® 8×8 package with 0.55 °C/W R_θJC	Lower R_DS(on) but higher Q_g; requires different footprint and thermal pad layout	Best for new designs prioritizing peak efficiency and thermal headroom over legacy board compatibility.

Compared with IRL3716S, IRL3803PbF trades efficiency for lower gate drive demand and cost, while SiR872DP delivers superior conduction loss and thermal resistance but demands PCB redesign and higher gate drive power-making IRL3716S optimal for drop-in upgrades in existing TO-220AB-based power stages.

Availability

IRL3716S is available at Aetrix Electronics and suitable for telecom DC-DC converters, server CPU voltage regulators, and industrial 24 V power supplies requiring stable component supply and long-term production continuity.

Supply support for IRL3716S 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 German semiconductor manufacturer specializing in power management, automotive, and industrial control ICs and discrete devices, with global manufacturing and quality certification to ISO/TS 16949 and IATF 16949.

The IRL3716S belongs to Infineon's HEXFET® logic-level MOSFET product line, engineered specifically for high-current, high-efficiency synchronous rectification and low-voltage switching in space-constrained, thermally demanding power systems.

FAQ

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

The IRL3716S supports 130 A continuous drain current at T_C = 100°C, as specified in its Absolute Maximum Ratings table. This rating assumes proper PCB copper area and heatsinking to maintain junction temperature below 175°C under steady-state operation.

Does the IRL3716S have a Kelvin source connection, and why does it matter?

Yes-the IRL3716S features a dedicated Kelvin source (pin 3) separate from the main source return path. This minimizes source inductance during high-di/dt switching, preventing gate oscillation and ensuring stable V_GS control, especially critical in multiphase VRMs and high-frequency synchronous rectifiers.

Can the IRL3716S be used in avalanche mode, and what is its rated energy?

Yes-the IRL3716S is fully characterized for unclamped inductive switching with a single-pulse avalanche energy rating of 640 mJ at T_J = 25°C. It supports repetitive avalanche up to 72 A, making it suitable for OR-ing and hot-swap protection circuits where transient overvoltage may occur.

How does the D2PAK-7L package differ from standard TO-220AB in thermal performance?

The D2PAK-7L package offers R_θJC = 0.72 °C/W versus ~1.0–1.2 °C/W for standard TO-220AB, due to its larger exposed drain pad and dual drain leads. This 25–40% improvement in thermal resistance enables higher power density and longer lifetime in thermally constrained applications like sealed industrial power supplies.

IRL3716S Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: HEXFET®

Package/Case:: TO-263-3, D2PAK (2 Leads + Tab), TO-263AB

Packaging:: Tube

Product Status:: Obsolete

FET Type:: N-Channel

Technology:: MOSFET (Metal Oxide)

Drain to Source Voltage (Vdss):: 20 V

Current - Continuous Drain (Id) @ 25°C:: 180A (Tc)

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

Rds On (Max) @ Id, Vgs:: 4mOhm @ 90A, 10V

Vgs(th) (Max) @ Id:: 3V @ 250µA

Gate Charge (Qg) (Max) @ Vgs:: 79 nC @ 4.5 V

Vgs (Max):: ±20V

Input Capacitance (Ciss) (Max) @ Vds:: 5090 pF @ 10 V

FET Feature:: -

Power Dissipation (Max):: 210W (Tc)

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: D2PAK

IRL3716S FAQ

1.How can I place an order for IRL3716S through Aetrix?

Please submit a Request for Quotation (RFQ) for IRL3716S 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 IRL3716S reliable?

The price and inventory of IRL3716S are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IRL3716S is usually 5 days.

3.What payment methods are accepted for IRL3716S?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IRL3716S transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for IRL3716S?

IRL3716S orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your IRL3716S 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 IRL3716S?

For technical support, including IRL3716S datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IRL3716S requirements.

6.How does Aetrix verify that IRL3716S is sourced from the original manufacturer or authorized distributors?

All IRL3716S 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 IRL3716S meets industry standards.

7.What is the process for return or replacement of IRL3716S?

All IRL3716S units undergo pre-shipment inspection (PSI). If there is an issue with IRL3716S, 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 IRL3716S part is unused and in its original packaging.

Return procedure for IRL3716S:

1.Submit a request within 90 days.

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

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