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

Infineon Technologies AUIRF7647S2TR

Name: AUIRF7647S2TR
Brand: Infineon Technologies
SKU: AUIRF7647S2TR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AUIRF7647S2TR

Manufacturer:: Infineon Technologies

Category:: FETs, MOSFETs

Package:: DirectFET™ Isometric SC

Datasheet:: AUIRF7647S2TR.pdf

Description:: MOSFET N-CH 100V 5.9A DIRECTFET

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Product details

Overview

AUIRF7647S2TR from Infineon is an automotive-grade N-channel Power MOSFET in DirectFET® Small Can (SC) package, rated for 100V V(BR)DSS, 26mΩ RDS(on) at 10V VGS, 14nC Qg, and 175°C junction operation-optimized for Class D audio amplifier output stages in vehicle infotainment systems.

For engineers reviewing the AUIRF7647S2TR datasheet, AUIRF7647S2TR pinout, AUIRF7647S2TR application, or AUIRF7647S2TR equivalent, key selection criteria include dual-sided cooling capability, low Qrr (55nC) for THD reduction, 100W/channel 8Ω drive without heatsink, and repetitive avalanche robustness (67mJ tested).

Technical Context

This MOSFET employs HEXFET® silicon with DirectFET® packaging to minimize parasitic inductance (enabling reduced voltage ringing) and internal gate resistance (RG = 1.6Ω typ.), directly improving EMI performance in high-frequency switching audio amplifiers.

Its body diode features 37ns trr and 55nC Qrr, while thermal design leverages RθJ-Can = 3.7°C/W and RθJ-PCB = 1.4°C/W-supporting convection-cooled, double-sided PCB mounting per AN-1035 for automotive under-hood environments.

Key Specifications

Parameter	Value and Actual Design Meaning
V(BR)DSS	100V - supports rail voltages up to ±45V in bridged Class D topologies with margin
RDS(on) typ.	26mΩ @ VGS=10V, ID=14A - enables <1.2W conduction loss at 14A, critical for efficiency in compact enclosures
Qg typ.	14nC - reduces gate drive power and improves switching speed control for <0.1% THD targets
Qrr	55nC - minimizes body diode recovery energy loss and associated distortion in hard-switched outputs
TJ max	+175°C - ensures reliable operation in sealed automotive amplifier housings with limited airflow
EAS (tested)	67mJ - provides validated unclamped inductive switching robustness during fault transients
RθJ-PCB	1.4°C/W - enables direct thermal coupling to copper pour on both PCB sides, eliminating discrete heatsinks

Pinout & Package

Package: DirectFET® Small Can (SC), surface-mount, dual-sided cooling capable, footprint compatible with standard power layout geometries per AN-1035.

Pin/Terminal	Circuit Role	Design Meaning
D (Drain)	Main current path from supply rail	Top-side metal pad-serves as primary thermal interface and high-current connection point
S (Source)	Return path for load current	Bottom-side copper terminals-dual S pins provide low-inductance return and second thermal path
G (Gate)	Control terminal for channel conduction	Isolated top-side pad-designed for low-capacitance routing to minimize Miller effect in >300kHz switching

Key Features

Feature	Design Value
Dual-sided cooling	Thermal path via top (Drain) and bottom (Source) metal surfaces-reduces total RθJA by >50% vs SOIC-8
Low Qrr (55nC)	Reduces body diode reverse recovery loss and associated THD spikes in Class D half-bridge dead-time transitions
Repetitive avalanche rating	Validated 67mJ single-pulse and 20mJ repetitive avalanche energy-supports robust overvoltage protection without snubbers
175°C continuous operation	Enables placement inside sealed amplifier modules near heat-generating components without derating
Lead-free, RoHS, halogen-free	Complies with automotive ELV Directive and JESD204B soldering profiles up to 270°C peak

Applications

Automotive Class D Audio Amplifier

High-Power Infotainment System

Use Scenario: 100W/channel output stage in OEM head unit driving 8Ω speakers with <0.05% THD+N at full power.

IC Role / Device Role / Timing Role: N-channel synchronous rectifier in half-bridge topology, switching at 350kHz with precise dead-time control.

Use Value: Dual-sided cooling eliminates external heatsink; 26mΩ RDS(on) limits conduction loss to <1.1W at 14A, enabling fanless enclosure design.

Use Scenario: Multi-channel amplifier module (4×50W) integrated into center console with ambient temperature up to 85°C.

IC Role / Device Role / Timing Role: High-side switch in DC-DC pre-regulator feeding Class D modulators, handling 24V input transients.

Use Value: 100V V(BR)DSS withstands load-dump surges (ISO 7637-2 Pulse 5a); 175°C TJ rating maintains 95% efficiency across full temperature range.

Automotive Subwoofer Driver

ADAS Audio Warning System

Use Scenario: 200W subwoofer channel using paralleled AUIRF7647S2TR devices in push-pull configuration.

IC Role / Device Role / Timing Role: Low-side switch in complementary output stage, operating with 10ns gate drive rise time.

Use Value: 14nC Qg enables fast turn-on with minimal gate driver dissipation; low Crss (47pF) suppresses Miller-induced shoot-through.

Use Scenario: Compact emergency alert tone generator mounted behind instrument cluster with space constraint <5mm height.

IC Role / Device Role / Timing Role: Output switch in resonant piezo driver circuit, operating at 2.5kHz with 99% duty cycle.

Use Value: 5.9A continuous ID at TA=25°C allows sustained 3W acoustic output without thermal throttling in confined air volume.

Equivalent & Alternatives

The following parts are listed as comparable options for similar automotive power MOSFET applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
STL220N6LF8AG	60V V(BR)DSS, 1.8mΩ RDS(on), TO-263-7 package, no dual-sided cooling	Limited to ≤45V rail systems; requires heatsink above 50W/channel	Select only for lower-voltage, higher-current designs where board space permits larger footprint
IPB180N10N5L-ASEM	100V V(BR)DSS, 3.0mΩ RDS(on), PG-HSOF-8 package, 150°C TJ max	Higher RDS(on) at high temperature; lacks validated avalanche energy spec	Prefer for cost-sensitive non-safety-critical audio; avoid in unclamped inductive loads

Compared with STL220N6LF8AG and IPB180N10N5L-ASEM, AUIRF7647S2TR uniquely delivers 100V rating with 26mΩ RDS(on) *and* dual-sided cooling in SC package-enabling compact, heatsink-free 100W Class D channels meeting AEC-Q101 and ISO 16750-2 requirements.

Availability

AUIRF7647S2TR is available at Aetrix Electronics and suitable for automotive infotainment systems, Class D audio amplifier modules, and ADAS warning tone generators requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for AUIRF7647S2TR 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 electronics, and industrial control ICs, with global manufacturing and AEC-Q101 qualification infrastructure.

This part belongs to Infineon's Automotive Power MOSFET product line-designed specifically for high-efficiency, thermally constrained switching applications in vehicle audio, lighting, and motor control systems.

FAQ

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

The AUIRF7647S2TR supports 17A continuous drain current at TC = 100°C with VGS = 10V, as specified in the Absolute Maximum Ratings table. This value reflects silicon-limited conduction capability under sustained thermal conditions typical of enclosed amplifier modules without forced airflow.

Does this MOSFET require a gate resistor for Class D audio operation?

Yes-a 6.8Ω gate resistor is used in the datasheet's switching time test circuit (Fig. 20a) to control dv/dt and suppress oscillation. The device's 1.6Ω internal RG and low Crss (47pF) allow stable 350kHz switching with minimal external resistance, but layout-dependent parasitics may necessitate 4.7–10Ω tuning.

Can AUIRF7647S2TR be used in synchronous rectification topologies?

No-it is an N-channel enhancement-mode MOSFET optimized for high-side or half-bridge switching, not synchronous rectification. Its body diode forward voltage (1.3V at 14A) and Qrr (55nC) are tuned for Class D output stage commutation, not low-loss freewheeling; dedicated SR controllers require different VSD and trr specs.

Is the DirectFET® SC package compatible with standard reflow profiles?

Yes-the package is qualified for lead-free reflow per J-STD-020, with peak temperature tolerance up to 270°C. However, AN-1035 mandates specific stencil aperture design (0.15mm thickness, 0.35mm openings) and vapor-phase or convection profile ramp rates to ensure void-free solder joints on both top and bottom thermal pads.

AUIRF7647S2TR Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: HEXFET®

Package/Case:: DirectFET™ Isometric SC

Packaging:: Tape & Reel (TR)

Product Status:: Active

FET Type:: N-Channel

Technology:: MOSFET (Metal Oxide)

Drain to Source Voltage (Vdss):: 100 V

Current - Continuous Drain (Id) @ 25°C:: 5.9A (Ta), 24A (Tc)

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

Rds On (Max) @ Id, Vgs:: 31mOhm @ 14A, 10V

Vgs(th) (Max) @ Id:: 5V @ 50µA

Gate Charge (Qg) (Max) @ Vgs:: 21 nC @ 10 V

Vgs (Max):: ±20V

Input Capacitance (Ciss) (Max) @ Vds:: 910 pF @ 25 V

FET Feature:: -

Power Dissipation (Max):: 2.5W (Ta), 41W (Tc)

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: DIRECTFET™ SC

AUIRF7647S2TR FAQ

1.How can I place an order for AUIRF7647S2TR through Aetrix?

Please submit a Request for Quotation (RFQ) for AUIRF7647S2TR 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 AUIRF7647S2TR reliable?

The price and inventory of AUIRF7647S2TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AUIRF7647S2TR is usually 5 days.

3.What payment methods are accepted for AUIRF7647S2TR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AUIRF7647S2TR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AUIRF7647S2TR?

AUIRF7647S2TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AUIRF7647S2TR 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 AUIRF7647S2TR?

For technical support, including AUIRF7647S2TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AUIRF7647S2TR requirements.

6.How does Aetrix verify that AUIRF7647S2TR is sourced from the original manufacturer or authorized distributors?

All AUIRF7647S2TR 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 AUIRF7647S2TR meets industry standards.

7.What is the process for return or replacement of AUIRF7647S2TR?

All AUIRF7647S2TR units undergo pre-shipment inspection (PSI). If there is an issue with AUIRF7647S2TR, 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 AUIRF7647S2TR part is unused and in its original packaging.

Return procedure for AUIRF7647S2TR:

1.Submit a request within 90 days.

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

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