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

Infineon Technologies AUIRFB3207

Name: AUIRFB3207
Brand: Infineon Technologies
SKU: AUIRFB3207
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AUIRFB3207

Manufacturer:: Infineon Technologies

Category:: FETs, MOSFETs

Package:: TO-220-3

Datasheet:: AUIRFB3207.pdf

Description:: MOSFET N-CH 75V 75A TO220AB

Quantity:: RFQ Add To RFQ list

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Inventory:3,149

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Product details

Overview

AUIRFB3207 from Infineon Technologies (formerly International Rectifier) is an automotive-grade N-channel HEXFET Power MOSFET in TO-220AB package, rated for 75V V(BR)DSS, 3.6mΩ typ. RDS(on), 170A silicon-limited continuous drain current at 25°C, and 175°C maximum junction temperature - deployed in high-current DC-DC converters, motor control inverters, and battery disconnect circuits.

For engineers reviewing the AUIRFB3207 datasheet, AUIRFB3207 pinout, AUIRFB3207 application, or AUIRFB3207 equivalent, key selection criteria include its ultra-low on-resistance, repetitive avalanche capability up to TJmax, automotive qualification per AEC-Q101, and thermal performance with RθJC = 0.50°C/W.

Technical Context

This MOSFET employs advanced planar silicon processing to minimize conduction losses while sustaining high pulsed currents (IDM = 720A) and fast switching (tr = 120ns, tf = 74ns). Its body diode exhibits trr = 42–63ns and Qrr = 65–98nC under 75A/64V conditions, enabling efficient synchronous rectification and inductive load handling.

The device supports unclamped inductive switching with EAS = 910mJ (single-pulse, TJ = 25°C) and EAR = 1000mJ (1% duty cycle), validated across -55°C to +175°C operating range. Gate drive requires only 10V for full enhancement (VGS(th) = 2.0–4.0V), with total gate charge Qg = 180–260nC.

Key Specifications

Parameter	Value and Actual Design Meaning
V(BR)DSS	75V - Withstands up to 75V drain-source blocking voltage before avalanche onset, suitable for 48V automotive systems.
RDS(on) typ.	3.6mΩ - Enables <1W conduction loss at 75A, critical for high-efficiency power stages.
ID (Silicon)	170A @ TC = 25°C - Maximum continuous current limited by silicon thermal capacity, not package.
TJ max	+175°C - Supports operation in engine bay environments without derating below ambient extremes.
EAS	910mJ - Single-pulse avalanche energy rating ensures robustness against inductive kickback in motor drives.
Qg	180–260nC - Determines gate driver power requirement and switching speed trade-off in hard-switched topologies.
RθJC	0.50°C/W - Junction-to-case thermal resistance enables direct heatsink mounting with predictable thermal rise.

Pinout & Package

TO-220AB package with isolated tab; standard three-terminal layout optimized for high-current PCB mounting and heatsink interface.

Pin/Terminal	Circuit Role	Design Meaning
Drain (D)	Main current path collector	Connected to high-side switch node or ground return; electrically tied to metal tab for low-inductance thermal path.
Source (S)	Main current path emitter	Serves as power return reference; used for current sensing and gate drive reference in high-side configurations.
Gate (G)	Control terminal	High-impedance input requiring ~200nC minimum charge to fully enhance; sensitive to ESD (HBM Class H2).

Key Features

Feature	Design Value
Automotive qualification	AEC-Q101 qualified with M4/MM4 ESD rating, enabling use in safety-critical vehicle subsystems without additional screening.
Repetitive avalanche rating	Rated for repeated unclamped inductive switching up to IAR = 75A and EAR = 1000mJ, eliminating need for external snubbers in motor control.
Ultra-low RDS(on)	3.6mΩ typical on-resistance reduces conduction losses by >30% versus legacy 75V MOSFETs, improving system efficiency in 12V/48V architectures.
Fast body diode recovery	trr = 42–63ns and Qrr = 65–98nC enable clean commutation in synchronous buck and half-bridge topologies without shoot-through risk.
Lead-free & RoHS	Compliant with automotive environmental standards, supporting end-of-life recycling and global regulatory compliance.

Applications

Engine Control Unit (ECU) Power Stage

48V Mild Hybrid DC-DC Converter

Use Scenario: High-current switching in fuel injector drivers and solenoid control modules within engine management systems.

IC Role / Device Role / Timing Role: Main power switch delivering precise 12V/24V pulses to electromagnetic actuators with microsecond timing resolution.

Use Value: 175°C TJ rating ensures reliability during extended idling or under-hood thermal soak; low RDS(on) minimizes self-heating during 100% duty-cycle operation.

Use Scenario: Primary-side switch in bidirectional 48V–12V DC-DC converters for mild hybrid vehicles.

IC Role / Device Role / Timing Role: High-frequency (50–200kHz) hard-switched power transistor managing up to 3kW power transfer.

Use Value: Low Qg and fast tr/tf reduce switching losses; repetitive avalanche tolerance protects against transient overvoltage during regenerative braking events.

Electric Power Steering (EPS) Inverter

Commercial Vehicle Battery Disconnect Switch

Use Scenario: Three-phase inverter stage driving brushless DC motors in steer-by-wire systems.

IC Role / Device Role / Timing Role: Low-side switch in 6-pack inverter configuration, conducting peak currents >150A during torque assist.

Use Value: 170A silicon-limited ID and 0.50°C/W RθJC allow sustained high-current operation without forced air cooling.

Use Scenario: High-reliability main contactor replacement in 24V/48V commercial truck battery management systems.

IC Role / Device Role / Timing Role: Solid-state isolation switch enabling remote-controlled battery isolation during fault conditions.

Use Value: 910mJ EAS rating withstands load dump transients; AEC-Q101 qualification guarantees >15-year field life in vibration-prone chassis environments.

Equivalent & Alternatives

The following parts are listed as comparable options for similar N-channel 75V power MOSFET applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
STL220N75F7	75V, 220A, RDS(on) = 2.8mΩ typ., TO-247 package, higher current but larger footprint and no AEC-Q101 certification.	Preferred for industrial UPS where automotive qualification is unnecessary and space allows TO-247 mounting.	Select when peak current >170A is required and thermal design accommodates larger package; avoid if AEC-Q101 compliance is mandatory.
IRFB3207PBF	Same die, identical specs, but legacy IR part number with discontinued automotive qualification documentation and no M4 ESD rating.	Acceptable for non-automotive industrial use where AEC-Q101 is not enforced.	Use only in cost-sensitive non-automotive designs; verify ESD test reports independently if deployed in harsh EMI environments.

Compared with STL220N75F7 and IRFB3207PBF, the AUIRFB3207 uniquely balances automotive qualification, TO-220AB form factor, and 3.6mΩ on-resistance - making it optimal for space-constrained, safety-critical 48V vehicle systems where traceability and long-term supply continuity are essential.

Availability

AUIRFB3207 is available at Aetrix Electronics and suitable for engine control units, 48V mild hybrid converters, and electric power steering inverters requiring stable component supply across multi-year automotive production cycles.

Supply support for AUIRFB3207 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 quality systems certified to IATF 16949.

The AUIRFB3207 belongs to Infineon's automotive-qualified HEXFET® Power MOSFET product line, engineered specifically for high-reliability, high-current switching in 12V/24V/48V vehicle electrical architectures.

FAQ

Is AUIRFB3207 pin-compatible with IRFB3207?

Yes - AUIRFB3207 uses identical TO-220AB mechanical outline and terminal assignment (D-G-S) as IRFB3207. However, AUIRFB3207 adds AEC-Q101 qualification, enhanced ESD robustness (M4 class), and updated process control, making it the designated automotive replacement.

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

At TC = 100°C, the continuous drain current is 120A (silicon-limited), as specified in the Absolute Maximum Ratings table. This value accounts for thermal derating while maintaining TJ ≤ 175°C under steady-state conduction with proper heatsinking.

Can AUIRFB3207 be used in synchronous rectification topologies?

Yes - its body diode has trr = 42–63ns and Qrr = 65–98nC at TJ = 25–125°C, enabling reliable synchronous operation in high-frequency buck converters. Gate drive must ensure dead-time control to prevent shoot-through during diode commutation.

Does AUIRFB3207 require a gate resistor for stability?

Yes - a series gate resistor (typically 5–25Ω) is recommended to dampen ringing caused by gate-drain capacitance (Crss = 390pF) and parasitic inductance. Values ≥10Ω also limit peak gate current during fast transitions, protecting driver ICs and reducing EMI.

AUIRFB3207 Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: HEXFET®

Package/Case:: TO-220-3

Packaging:: Tube

Product Status:: Obsolete

FET Type:: N-Channel

Technology:: MOSFET (Metal Oxide)

Drain to Source Voltage (Vdss):: 75 V

Current - Continuous Drain (Id) @ 25°C:: 75A (Tc)

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

Rds On (Max) @ Id, Vgs:: 4.5mOhm @ 75A, 10V

Vgs(th) (Max) @ Id:: 4V @ 250µA

Gate Charge (Qg) (Max) @ Vgs:: 260 nC @ 10 V

Vgs (Max):: ±20V

Input Capacitance (Ciss) (Max) @ Vds:: 7600 pF @ 50 V

FET Feature:: -

Power Dissipation (Max):: 300W (Tc)

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

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: TO-220AB

AUIRFB3207 FAQ

1.How can I place an order for AUIRFB3207 through Aetrix?

Please submit a Request for Quotation (RFQ) for AUIRFB3207 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 AUIRFB3207 reliable?

The price and inventory of AUIRFB3207 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AUIRFB3207 is usually 5 days.

3.What payment methods are accepted for AUIRFB3207?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AUIRFB3207 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AUIRFB3207?

AUIRFB3207 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AUIRFB3207 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 AUIRFB3207?

For technical support, including AUIRFB3207 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AUIRFB3207 requirements.

6.How does Aetrix verify that AUIRFB3207 is sourced from the original manufacturer or authorized distributors?

All AUIRFB3207 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 AUIRFB3207 meets industry standards.

7.What is the process for return or replacement of AUIRFB3207?

All AUIRFB3207 units undergo pre-shipment inspection (PSI). If there is an issue with AUIRFB3207, 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 AUIRFB3207 part is unused and in its original packaging.

Return procedure for AUIRFB3207:

1.Submit a request within 90 days.

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

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