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

Infineon Technologies AUIRFR3710Z

Name: AUIRFR3710Z
Brand: Infineon Technologies
SKU: AUIRFR3710Z
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AUIRFR3710Z

Manufacturer:: Infineon Technologies

Category:: FETs, MOSFETs

Package:: TO-252-3, DPAK (2 Leads + Tab), SC-63

Datasheet:: AUIRFR3710Z.pdf

Description:: MOSFET N-CH 100V 42A DPAK

Quantity:: RFQ Add To RFQ list

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Product details

Overview

AUIRFR3710Z from Infineon is an automotive-grade N-channel D-Pak HEXFET® Power MOSFET with 100 V V_DS, 18 mΩ max R_DS(on) at V_GS = 10 V, 42 A package-limited continuous drain current, and 175 °C maximum junction temperature-designed for high-efficiency DC-DC converters and motor control in engine management systems.

For engineers reviewing the AUIRFR3710Z datasheet, AUIRFR3710Z pinout, AUIRFR3710Z application, or AUIRFR3710Z equivalent, key selection criteria include its 1.05 °C/W R_θJC, 69 nC total gate charge, 35 ns typical reverse recovery time, and validated repetitive avalanche capability up to T_Jmax.

Technical Context

This MOSFET employs Infineon's advanced silicon process to achieve ultra-low on-resistance per die area while maintaining robust thermal performance. Its 175 °C rated junction enables operation in under-hood environments without derating, and its 220 A pulsed drain rating supports high peak-load switching in starter solenoid drivers and fuel pump controllers.

The device integrates a fast-recovery body diode (t_rr = 35–53 ns, Q_rr = 41–62 nC) and supports unclamped inductive switching with single-pulse avalanche energy of 200 mJ (tested) and repetitive avalanche energy up to 150 mJ-critical for load dump protection and relay driving in 12 V automotive systems.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	100 V - Withstands transients up to ISO 7637-2 Pulse 5a (load dump) in 12 V systems
R_DS(on) max	18 mΩ @ V_GS = 10 V - Enables <1.7 W conduction loss at 42 A, reducing heatsink requirements
I_D (package)	42 A @ T_C = 25 °C - Thermal limit defined by D-Pak package construction, not silicon
Q_g	69–100 nC - Dictates gate driver strength needed for <53 ns turn-off delay in PWM applications
t_rr	35–53 ns - Minimizes switching losses during body-diode commutation in synchronous rectifiers
R_θJC	1.05 °C/W - Enables direct heatsink mounting for >100 W power dissipation in compact layouts
E_AS (tested)	200 mJ - Verified avalanche robustness allows safe operation in inductive switching without snubbers

Pinout & Package

Supplied in industry-standard D-Pak (TO-252) surface-mount package with exposed drain pad for thermal enhancement and mechanical stability.

Pin/Terminal	Circuit Role	Design Meaning
G	Gate	Controls channel conduction; requires ≥10 V drive for full R_DS(on) specification
D	Drain	Main high-side power terminal; electrically connected to exposed copper pad for thermal path
S	Source	Power return and reference node for gate drive; forms common source in high-side configurations

Key Features

Feature	Design Value
Automotive qualification	AEC-Q101 qualified per Infineon standards-validated for 15-year life in engine bay environments
Repetitive avalanche rating	Rated for repeated unclamped inductive switching up to T_Jmax, eliminating need for external clamping diodes
Fast body diode	35 ns t_rr and low Q_rr enable efficient freewheeling in buck converters and H-bridge motor drives
Thermal resilience	175 °C T_J rating permits operation at full current without ambient derating in sealed enclosures
Lead-free & RoHS	Meets J-STD-020 moisture sensitivity level 1 and EU RoHS Directive 2011/65/EU

Applications

Engine Control Unit (ECU) Fuel Injector Driver

Automotive DC-DC Converter Primary Switch

Use Scenario: High-speed switching of 12 V fuel injectors with 2 ms pulse width and 10 Hz repetition rate.

IC Role / Device Role / Timing Role: Low-side switch controlling injector coil current; handles 42 A peak with minimal voltage drop.

Use Value: 18 mΩ R_DS(on) limits I²R loss to ≤31 W at peak current, enabling compact PCB layout without forced air cooling.

Use Scenario: Primary-side synchronous rectifier in 12 V → 5 V/3.3 V buck converter for ADAS camera modules.

IC Role / Device Role / Timing Role: High-frequency (500 kHz) power switch with fast turn-on/off to minimize dead-time losses.

Use Value: 69 nC Q_g and 43 ns rise time support efficient switching at 500 kHz with standard gate drivers (e.g., UCC27531).

Starter Motor Solenoid Interface

Electric Power Steering (EPS) Motor Phase Leg

Use Scenario: Driving 12 V starter solenoid coils requiring 220 A pulsed current for <100 ms engagement bursts.

IC Role / Device Role / Timing Role: High-current, short-duration switch with avalanche energy absorption during coil de-energization.

Use Value: 200 mJ tested E_AS and 220 A I_DM ensure reliable operation during repeated cranking cycles without failure.

Use Scenario: Half-bridge phase leg in 3-phase EPS motor controller operating at 20 kHz PWM frequency.

IC Role / Device Role / Timing Role: Low-side switch in inverter leg; conducts 56 A continuous current with body diode freewheeling.

Use Value: 35 ns t_rr and 41 nC Q_rr reduce cross-conduction losses and EMI during commutation transitions.

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
STL130N10F7	100 V, 130 A, 5.8 mΩ R_DS(on), PowerFLAT 5x6 package, 150 °C T_J	Higher current rating but lower thermal robustness; requires larger PCB copper area for heat spreading	Select when higher continuous current and lower conduction loss are prioritized over under-hood thermal margin
IRF3710PBF	100 V, 57 A, 26 mΩ R_DS(on), TO-220 package, non-automotive grade	No AEC-Q101 qualification; lacks repetitive avalanche rating and 175 °C operation	Acceptable only for non-safety-critical 12 V industrial controls where qualification is not mandated

Compared with STL130N10F7 and IRF3710PBF, AUIRFR3710Z uniquely balances automotive qualification, 175 °C operation, and 18 mΩ on-resistance in a thermally optimized D-Pak-making it optimal for space-constrained, high-reliability engine bay applications where thermal cycling and transient immunity are critical.

Availability

AUIRFR3710Z is available at Aetrix Electronics and suitable for automotive engine control units, electric power steering systems, and 12 V DC-DC converters requiring stable component supply across extended production lifecycles.

Supply support for AUIRFR3710Z 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 microcontrollers, and sensor solutions, with global manufacturing and qualification infrastructure.

AUIRFR3710Z belongs to the HEXFET® Automotive Power MOSFET product line, engineered specifically for high-reliability, high-temperature switching in 12 V and 48 V vehicle electrical systems-including engine management, chassis control, and ADAS subsystems.

FAQ

What is the maximum allowable case temperature for continuous 42 A operation?

The AUIRFR3710Z sustains 42 A continuous drain current only when case temperature (T_C) remains at or below 25 °C, as specified in the Absolute Maximum Ratings table. At higher case temperatures, current must be linearly derated using the 0.95 W/°C factor and R_θJC = 1.05 °C/W to prevent exceeding 175 °C junction temperature.

Does AUIRFR3710Z require a gate resistor for automotive PWM applications?

Yes-a gate resistor (typically 6.8 Ω, per Fig. 12a test circuit) is required to control dV/dt and suppress oscillation during switching. The 69–100 nC total gate charge necessitates careful driver sizing; undersized drivers cause excessive switching losses and localized heating at the gate bond wire.

Can AUIRFR3710Z replace IRF3710 in existing designs?

No direct drop-in replacement: although both share 100 V rating and D-Pak package, AUIRFR3710Z has tighter R_DS(on) (18 mΩ vs. 26 mΩ), higher T_J (175 °C vs. 175 °C same), and AEC-Q101 qualification-requiring validation of thermal margins, gate drive strength, and system-level reliability testing before substitution.

Is the body diode suitable for synchronous rectification in buck converters?

Yes-the body diode exhibits 35–53 ns reverse recovery time and 41–62 nC Q_rr, making it viable for synchronous rectification at ≤500 kHz in 12 V input buck stages. However, external Schottky diodes remain preferred for >1 MHz operation due to lower Q_rr and zero recovery loss.

AUIRFR3710Z Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: HEXFET®

Package/Case:: TO-252-3, DPAK (2 Leads + Tab), SC-63

Packaging:: Tube

Product Status:: Obsolete

FET Type:: N-Channel

Technology:: MOSFET (Metal Oxide)

Drain to Source Voltage (Vdss):: 100 V

Current - Continuous Drain (Id) @ 25°C:: 42A (Tc)

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

Rds On (Max) @ Id, Vgs:: 18mOhm @ 33A, 10V

Vgs(th) (Max) @ Id:: 4V @ 250µA

Gate Charge (Qg) (Max) @ Vgs:: 100 nC @ 10 V

Vgs (Max):: ±20V

Input Capacitance (Ciss) (Max) @ Vds:: 2930 pF @ 25 V

FET Feature:: -

Power Dissipation (Max):: 140W (Tc)

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: TO-252AA (DPAK)

AUIRFR3710Z FAQ

1.How can I place an order for AUIRFR3710Z through Aetrix?

Please submit a Request for Quotation (RFQ) for AUIRFR3710Z 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 AUIRFR3710Z reliable?

The price and inventory of AUIRFR3710Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AUIRFR3710Z is usually 5 days.

3.What payment methods are accepted for AUIRFR3710Z?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AUIRFR3710Z transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AUIRFR3710Z?

AUIRFR3710Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AUIRFR3710Z 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 AUIRFR3710Z?

For technical support, including AUIRFR3710Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AUIRFR3710Z requirements.

6.How does Aetrix verify that AUIRFR3710Z is sourced from the original manufacturer or authorized distributors?

All AUIRFR3710Z 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 AUIRFR3710Z meets industry standards.

7.What is the process for return or replacement of AUIRFR3710Z?

All AUIRFR3710Z units undergo pre-shipment inspection (PSI). If there is an issue with AUIRFR3710Z, 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 AUIRFR3710Z part is unused and in its original packaging.

Return procedure for AUIRFR3710Z:

1.Submit a request within 90 days.

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

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