Infineon Technologies AUIRF7342QTR

Overview

AUIRF7342QTR from Infineon is a dual P-channel automotive-grade power MOSFET in SO-8 package, rated for -55 V V_DS, 0.105 Ω R_DS(on) at -10 V V_GS, and -3.4 A continuous drain current at 25°C. It features logic-level gate drive, full avalanche rating, and 150°C junction operation-designed for high-reliability DC-DC converter synchronous rectification and motor control in engine management systems.

For engineers reviewing the AUIRF7342QTR datasheet, AUIRF7342QTR pinout, AUIRF7342QTR application, or AUIRF7342QTR equivalent, key selection criteria include its dual P-channel configuration, -4.5 V logic-compatible gate threshold, SO-8 thermal performance (R_θJA = 62.5°C/W), and automotive qualification per AEC-Q101 standards.

Technical Context

This device integrates two matched P-channel HEXFET® MOSFETs in a single SO-8 package, enabling compact half-bridge or dual low-side switching topologies without external level-shifting. Its planar silicon process delivers stable R_DS(on) over temperature (±0.054 V/°C dV(BR)_DSS/dT_J) and robust dv/dt immunity (5.0 V/ns).

The MOSFET supports fast switching with 14 ns turn-on delay, 10 ns rise time, and 22 ns fall time under defined test conditions (V_DD = -28 V, I_D = -1.0 A, R_G = 6.0 Ω), while its body diode exhibits 54–80 ns reverse recovery time and 85–130 nC Q_rr-critical for synchronous buck efficiency in 12 V automotive rails.

Key Specifications

Pinout & Package

Package: SO-8 (Surface-Mount, 150°C rated, lead-free, RoHS-compliant). Thermal resistance R_θJA = 62.5°C/W on 1"² copper board.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual P-channel MOSFET applications.

Compared with SPB04N60C3 and IPB80P04P4L-04, AUIRF7342QTR uniquely delivers dual-channel integration, logic-level compatibility, and AEC-Q101 validation in SO-8-making it the only option for compact, low-voltage, automotive-synchronous rectification without redesigning gate drive or layout.

Availability

AUIRF7342QTR is available at Aetrix Electronics and suitable for engine control units, HVAC motor drivers, start-stop battery management, and LED headlamp dimming requiring stable component supply across automotive production lifecycles.

Supply support for AUIRF7342QTR 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 security solutions, with global manufacturing and qualification infrastructure.

AUIRF7342QTR belongs to the HEXFET® Automotive Power MOSFET product line, engineered specifically for high-reliability 12 V vehicle subsystems-including powertrain, body electronics, and ADAS-where thermal stability, avalanche ruggedness, and AEC-Q101 compliance are mandatory.

FAQ

What is the maximum safe operating ambient temperature for AUIRF7342QTR in continuous operation?

The device supports continuous operation up to 70°C ambient temperature at full rated current (-2.7 A), based on derating curves in the datasheet. At 25°C ambient, it delivers -3.4 A continuously. Above 70°C, current must be linearly reduced by 0.016 A/°C to maintain junction temperature ≤150°C under still-air conditions on a 1"² copper board.

Does AUIRF7342QTR require external gate resistors for EMI suppression in automotive PWM applications?

Yes-while the device's 26–38 nC total gate charge enables fast switching, a 10–22 Ω series gate resistor is recommended to limit di/dt and suppress radiated emissions in 20–100 kHz PWM motor drives. This value balances switching loss reduction against conducted EMI compliance per CISPR 25 Class 5 requirements.

Can AUIRF7342QTR be used in parallel configurations to increase current capacity?

No-parallel operation is not recommended due to negative temperature coefficient of R_DS(on) causing current imbalance. The device's matching between channels is specified only for internal dual structure, not inter-device pairing. For higher current, select a single-die alternative like IPB80P04P4L-04 with proven paralleling capability.

Is the SO-8 package thermally enhanced with an exposed pad for improved heatsinking?

No-the standard SO-8 package for AUIRF7342QTR does not include an exposed thermal pad. Thermal performance relies on copper pour under pins 1–4 and 5–8 per JEDEC MS-012AA outline. For enhanced dissipation, use ≥2 oz copper layers and multiple thermal vias to inner ground planes, achieving R_θJA ≈ 45°C/W in optimized layouts.