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

Infineon Technologies IRFU3710Z

Name: IRFU3710Z
Brand: Infineon Technologies
SKU: IRFU3710Z
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: IRFU3710Z

Manufacturer:: Infineon Technologies

Category:: FETs, MOSFETs

Package:: TO-251-3 Short Leads, IPAK, TO-251AA

Datasheet:: IRFU3710Z.pdf

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

Quantity:: RFQ Add To RFQ list

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Inventory:6,338

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Product details

Overview

IRFU3710Z from Infineon Technologies (formerly International Rectifier) is an N-channel automotive-grade HEXFET® Power MOSFET in D-Pak (TO-252) package, rated for 100 V V_DSS, 42 A continuous drain current at T_C = 25°C, and 18 mΩ R_DS(on) at V_GS = 10 V. It features 175°C maximum junction temperature, fast switching (t_r = 43 ns, t_f = 42 ns), and rated repetitive avalanche capability-designed for high-reliability DC-DC converters and motor control in engine management systems.

For engineers reviewing the IRFU3710Z datasheet, IRFU3710Z pinout, IRFU3710Z application, or IRFU3710Z equivalent, key selection criteria include its 100 V breakdown voltage, low 18 mΩ on-resistance at 10 V gate drive, 175°C thermal rating, avalanche energy handling (E_AS = 56 mJ), and D-Pak thermal performance (R_θJC = 1.05 °C/W).

Technical Context

This MOSFET employs advanced planar silicon processing to minimize specific on-resistance while maintaining robust short-circuit and avalanche ruggedness. Its gate charge profile (Q_g = 69–100 nC, Q_gd = 25 nC) supports efficient high-frequency switching in synchronous buck stages up to 200 kHz.

The integrated body diode exhibits V_SD = 1.3 V at 33 A and fast reverse recovery (t_rr = 35–53 ns, Q_rr = 41–62 nC), enabling reliable operation in freewheeling and regenerative braking paths without external Schottky supplementation.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DSS	100 V - Withstands up to 100 V drain-source blocking voltage, suitable for 48 V automotive bus and 24 V industrial power rails.
R_DS(on)	15–18 mΩ @ V_GS = 10 V - Enables <1.5 W conduction loss at 42 A, reducing heatsink requirements in compact modules.
I_D (continuous)	42 A @ T_C = 25°C - Supports high-current load switching in starter solenoid drivers and HVAC blower controllers.
T_J(max)	175°C - Allows sustained operation in under-hood environments with minimal derating over ambient temperature range.
E_AS	56 mJ (tested) - Provides validated unclamped inductive switching margin for relay coil snubbing and motor phase commutation.
Q_g	69–100 nC - Determines gate driver power requirement; compatible with standard 1 A peak gate drivers at ≤200 kHz.
t_r/t_f	43 ns / 42 ns - Enables fast transition through linear region, minimizing switching losses in hard-switched topologies.

Pinout & Package

IRFU3710Z uses the D-Pak (TO-252AA) surface-mount package with exposed drain pad for enhanced thermal conduction. The package measures 6.73 mm × 6.22 mm × 2.39 mm and is optimized for PCB copper area thermal spreading.

Pin/Terminal	Circuit Role	Design Meaning
Pin 1 (Source)	Source terminal (S)	Low-side reference node; connects directly to ground plane or source return path; carries full load current.
Pin 2 (Gate)	Control input (G)	High-impedance MOSFET gate; requires 10 V drive for full enhancement; sensitive to ESD (±20 V max V_GS).
Pin 3 (Drain)	Power output (D)	Exposed metal pad (Drain); must be soldered to large copper pour for thermal and current handling; electrically tied to case.

Key Features

Feature	Design Value
Automotive qualification	AEC-Q101 qualified - Validated for vibration, temperature cycling, and humidity exposure per automotive reliability standards.
Repetitive avalanche rating	Rated for repeated unclamped inductive switching up to T_Jmax - Eliminates need for external clamping in motor phase-leg designs.
Ultra-low R_DS(on)	15 mΩ typical at 10 V - Reduces I²R losses by >30% vs. legacy 100 V MOSFETs, improving efficiency in 12–48 V battery systems.
Fast body diode	t_rr = 35 ns, Q_rr = 41 nC - Minimizes reverse recovery loss and EMI during synchronous rectification and bidirectional power flow.
Thermal robustness	R_θJC = 1.05 °C/W - Enables >60 W power dissipation with modest heatsinking, supporting high-current pulse operation in engine control units.

Applications

Engine Control Unit (ECU) Fuel Injector Driver

48 V Mild Hybrid DC-DC Converter

Use Scenario: High-speed switching of solenoid-based fuel injectors in gasoline direct injection systems.

IC Role / Device Role / Timing Role: Low-side switch controlling injector coil current with precise 1–2 ms on-time and fast turn-off.

Use Value: 42 A rating handles peak coil surge; 175°C rating ensures reliability near hot engine block; fast t_f prevents residual current-induced misfire.

Use Scenario: Synchronous rectification in 48 V–12 V bi-directional buck-boost converter for mild hybrid energy recovery.

IC Role / Device Role / Timing Role: High-side or low-side power switch operating at 100–200 kHz with 10 V gate drive.

Use Value: 18 mΩ R_DS(on) limits conduction loss to <0.3 W at 30 A; low Q_gd enables clean zero-voltage switching transitions.

Electric Power Steering (EPS) Motor Phase Leg

Commercial HVAC Blower Motor Inverter

Use Scenario: Half-bridge leg in three-phase inverter driving brushless DC motor in EPS system.

IC Role / Device Role / Timing Role: N-channel MOSFET in low-side position, commutated with dead-time controlled PWM.

Use Value: Repetitive avalanche rating absorbs inductive kickback during fault conditions; 175°C rating sustains operation inside sealed EPS housing.

Use Scenario: High-current PWM drive for 24 V DC blower motors in industrial HVAC control panels.

IC Role / Device Role / Timing Role: Main power switch in single-phase H-bridge or half-bridge configuration.

Use Value: 42 A continuous rating supports 1.5 kW motor loads; D-Pak package allows direct mounting to aluminum heatsink for passive cooling.

Equivalent & Alternatives

The following parts are listed as comparable options for similar N-channel 100 V power MOSFET applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
STP110N10F7	R_DS(on) = 10.5 mΩ (lower), but T_Jmax = 150°C (lower), no AEC-Q101 certification	Not qualified for automotive under-hood use; better suited for industrial SMPS where ambient <125°C	Select if higher efficiency at lower temperature is prioritized over automotive qualification.
IXTP110N10L2	R_DS(on) = 11.5 mΩ, Q_g = 85 nC, avalanche-rated but not AEC-Q101 qualified	Lacks automotive stress validation; higher Q_g increases gate drive loss at >150 kHz	Prefer for cost-sensitive industrial inverters where qualification testing is handled externally.

Compared with STP110N10F7 and IXTP110N10L2, IRFU3710Z trades slightly higher R_DS(on) for guaranteed automotive qualification, superior thermal margin (175°C vs. 150°C), and proven repetitive avalanche behavior-making it the default choice for safety-critical vehicle subsystems.

Availability

IRFU3710Z is available at Aetrix Electronics and suitable for engine control units, 48 V mild hybrid converters, and electric power steering systems requiring stable component supply across extended production lifecycles.

Supply support for IRFU3710Z 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, automotive electronics, and industrial control solutions, with core expertise in silicon and wide-bandgap device design.

IRFU3710Z belongs to the HEXFET® automotive power MOSFET product line, engineered specifically for high-temperature, high-reliability switching in engine bay and chassis-mounted electronic control modules.

FAQ

Is IRFU3710Z pin-compatible with IRFR3710Z?

Yes-IRFU3710Z (D-Pak/TO-252) and IRFR3710Z (I-Pak/TO-220AB) share identical electrical specifications and pinout assignment (G-S-D), but differ mechanically: IRFU3710Z is surface-mount with exposed drain pad, while IRFR3710Z is through-hole with isolated tab. Thermal and layout integration requirements are not interchangeable.

What is the maximum recommended gate resistor for 100 kHz switching?

A 10 Ω gate resistor is recommended for 100 kHz operation with standard 1 A peak gate drivers, balancing switching speed (t_r/t_f ≈ 40 ns) against ringing and EMI. Lower values (≤5 Ω) may be used with >2 A drivers to further reduce transition time without compromising stability.

Does IRFU3710Z require a gate driver IC, or can it be driven directly from a microcontroller?

Direct microcontroller drive is not recommended: the 69–100 nC gate charge demands >10 mA average current at 100 kHz, exceeding most MCU GPIO ratings. A dedicated gate driver (e.g., TC4427, IRS2004) is required to ensure fast, low-loss switching and prevent shoot-through in bridge configurations.

Can IRFU3710Z replace older IRF3710 in existing designs?

Yes-with caveats: IRFU3710Z offers identical V_DSS, R_DS(on), and I_D ratings but adds AEC-Q101 qualification, 175°C rating, and improved avalanche ruggedness. Layout changes may be needed due to D-Pak footprint versus TO-220 of IRF3710; thermal interface must accommodate exposed drain pad soldering.

IRFU3710Z Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: HEXFET®

Package/Case:: TO-251-3 Short Leads, IPAK, TO-251AA

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:: Through Hole

Supplier Device Package:: IPAK (TO-251AA)

IRFU3710Z FAQ

1.How can I place an order for IRFU3710Z through Aetrix?

Please submit a Request for Quotation (RFQ) for IRFU3710Z 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 IRFU3710Z reliable?

The price and inventory of IRFU3710Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IRFU3710Z is usually 5 days.

3.What payment methods are accepted for IRFU3710Z?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IRFU3710Z transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for IRFU3710Z?

IRFU3710Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your IRFU3710Z 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 IRFU3710Z?

For technical support, including IRFU3710Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IRFU3710Z requirements.

6.How does Aetrix verify that IRFU3710Z is sourced from the original manufacturer or authorized distributors?

All IRFU3710Z 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 IRFU3710Z meets industry standards.

7.What is the process for return or replacement of IRFU3710Z?

All IRFU3710Z units undergo pre-shipment inspection (PSI). If there is an issue with IRFU3710Z, 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 IRFU3710Z part is unused and in its original packaging.

Return procedure for IRFU3710Z:

1.Submit a request within 90 days.

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

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