Infineon Technologies IAUC41N06S5N102ATMA1

Overview

IAUC41N06S5N102ATMA1 from Infineon is an N-channel enhancement-mode automotive power MOSFET in the OptiMOS™-5 family, rated for 60 V V_DS, 10.2 mΩ R_DS(on) at V_GS = 10 V and I_D = 20 A, and qualified to AEC-Q101 with 175 °C maximum junction temperature. It delivers high-current switching (47 A chip-limited continuous drain) in engine control units, DC-DC converters, and motor drivers where robustness and avalanche energy handling (13 mJ) are critical.

For engineers reviewing the IAUC41N06S5N102ATMA1 datasheet, IAUC41N06S5N102ATMA1 pinout, IAUC41N06S5N102ATMA1 application, or IAUC41N06S5N102ATMA1 equivalent, key selection criteria include its MSL1 reflow compatibility (260 °C peak), 100% avalanche-tested reliability, low gate charge (Q_g = 16.3 nC max), and thermally optimized PG-TDSON-8-33 package for high-power automotive PCB layouts.

Technical Context

This MOSFET employs a trench-based silicon process optimized for low R_DS(on) × Q_g figure-of-merit, enabling efficient high-frequency switching in 12 V/48 V automotive systems. Its gate threshold voltage (2.2–3.4 V) ensures stable turn-on under wide supply variations, while the integrated body diode supports freewheeling in synchronous rectification topologies.

The device features enhanced electrical testing beyond AEC-Q101 requirements, including extended temperature cycling and robust HBM/CDM ESD performance. Thermal design is supported by a low R_thJC of 3.6 K/W and validated operation up to 175 °C junction temperature, making it suitable for under-hood applications with minimal heatsinking.

Key Specifications

Pinout & Package

Package: PG-TDSON-8-33 - Thermally enhanced 8-pin exposed-drain DSO-style leadless package with 3.3 mm × 3.3 mm footprint and 0.65 mm pitch; bottom-side thermal pad improves heat transfer to PCB copper.

Key Features

Applications

Equivalent & Alternatives

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

Compared with IAUZ40N08S5N032ATMA1 and IPB180N04S4H5ATMA1, IAUC41N06S5N102ATMA1 offers the optimal balance of voltage headroom, thermal capability, and package compatibility for dual-voltage (12 V/48 V) automotive subsystems - especially where space-constrained layouts and 175 °C operation are mandatory.

Availability

IAUC41N06S5N102ATMA1 is available at Aetrix Electronics and suitable for engine control units, 48 V mild hybrid converters, electric power steering inverters, and onboard charger auxiliary supplies requiring stable component supply across automotive production lifecycles.

Supply support for IAUC41N06S5N102ATMA1 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 AG is a German semiconductor manufacturer specializing in power management, automotive electronics, and security solutions, with global manufacturing and R&D infrastructure.

This part belongs to the OptiMOS™-5 automotive power MOSFET product line, engineered specifically for high-reliability, high-temperature switching in engine, transmission, and electrified vehicle subsystems.

FAQ

What is the maximum allowable gate-source voltage for IAUC41N06S5N102ATMA1?

The absolute maximum V_GS is ±20 V per the datasheet's "Maximum ratings" table. Operation above +12 V or below −10 V risks permanent gate oxide damage. Recommended gate drive is 10 V for full enhancement with margin; 7 V is sufficient for R_DS(on) ≤ 11.8 mΩ but increases conduction loss by ~17% versus 10 V.

Does IAUC41N06S5N102ATMA1 require a gate resistor in automotive applications?

Yes - a series gate resistor (typically 5–22 Ω) is required to dampen ringing caused by parasitic inductance in high-di/dt automotive environments. The device's 1.28 Ω typical gate resistance alone is insufficient; external resistance controls turn-on/turn-off speed, reduces EMI, and prevents shoot-through in half-bridge configurations.

How is thermal performance affected when the exposed drain pad is not soldered to PCB copper?

Without soldering the exposed drain pad to ≥100 mm² of 2 oz copper, R_thJA degrades from 25.6 K/W to >60 K/W, causing junction temperature to exceed 175 °C at just 15 A continuous current. Full thermal performance requires compliant layout per Infineon's PG-TDSON-8-33 footprint guidelines, including thermal vias under the pad.

Can IAUC41N06S5N102ATMA1 replace older OptiMOS™-4 devices in existing designs?

Yes - it is a direct drop-in replacement for IAUC41N06S406ATMA1 in most cases, offering identical pinout, improved R_DS(on) (−15%), lower Q_g (−12%), and extended temperature rating (175 °C vs. 150 °C). Layout changes are unnecessary, but gate drive strength should be verified due to reduced Miller plateau voltage (4.8 V vs. 5.2 V).