Infineon Technologies FF3MR12KM1HOSA1

Overview

FF3MR12KM1HOSA1 from Infineon is a 62 mm C-Series power module integrating dual CoolSiC™ Trench MOSFETs in a half-bridge configuration, rated for 1200 V V_DSS, 280 A continuous drain current (I_DN), and 560 A repetitive peak current (I_DRM). It delivers low R_DS(on) (4.44 mΩ typ. at 25 °C), 20 nH stray inductance, and 4 kV AC insulation for high-efficiency, high-frequency switching in industrial DC/DC converters and solar inverters.

For engineers reviewing the FF3MR12KM1HOSA1 datasheet, FF3MR12KM1HOSA1 pinout, FF3MR12KM1HOSA1 application, or FF3MR12KM1HOSA1 equivalent, key selection criteria include its 175 °C maximum junction temperature, -3 V / +18 V gate drive voltage range, 0.168 K/W junction-to-case thermal resistance per MOSFET, and qualification to IEC 60747/60749/60068 for industrial reliability.

Technical Context

This module implements a symmetrical half-bridge topology with two identical 1200 V CoolSiC™ Trench MOSFETs sharing a common source terminal. Each device features a co-packaged body diode with 5.59 V forward voltage (V_SD) at 280 A and 25 °C, and supports gate drive voltages from –5 V to +18 V for robust noise immunity and optimized switching loss trade-offs.

Its 62 mm C-Series package uses Al₂O₃ ceramic isolation (class 1, IEC 61140), 29 mm creepage to heatsink, and copper baseplate for thermal management. Stray inductance is minimized to 20 nH, enabling clean turn-off waveforms in >50 kHz switching applications such as EV DC chargers and energy storage systems.

Key Specifications

Pinout & Package

The FF3MR12KM1HOSA1 is housed in a standardized 62 mm C-Series industrial power module package with copper baseplate, Al₂O₃ isolation, and screw-mount terminals (M6). Dimensions and mounting torque specifications follow Infineon's C-Series mechanical standard (M6 screws: 3–6 Nm for module mounting, 2.5–5 Nm for terminal connections).

Key Features

Applications

Availability

FF3MR12KM1HOSA1 is available at Aetrix Electronics and suitable for solar string inverters, industrial UPS systems, and EV DC fast chargers requiring stable component supply, long-term lifecycle support, and traceable industrial-grade sourcing.

Supply support for FF3MR12KM1HOSA1 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 semiconductors, microcontrollers, and sensor solutions, with global manufacturing and R&D infrastructure.

This part belongs to Infineon's CoolSiC™ 62 mm C-Series module family, engineered for high-power industrial and renewable energy systems demanding high voltage, high current, and high reliability in compact form factors.

FAQ

What gate drive voltage is recommended for FF3MR12KM1HOSA1?

Infineon specifies +15 V to +18 V for turn-on and –5 V to 0 V for turn-off. Using –3 V to +18 V (as validated in AN 2021-13) balances switching loss, Miller immunity, and long-term gate oxide reliability. Exceeding +18 V risks gate oxide degradation, while driving below –3 V may compromise noise margin during high di/dt events.

Does FF3MR12KM1HOSA1 include integrated temperature sensing?

No, this module does not integrate a temperature sensor. Thermal monitoring must be implemented externally using either case-mounted NTC thermistors (per Infineon's application note AN 2019-02) or infrared sensors targeting the copper baseplate. The module's R_thJC value (0.168 K/W) and defined mounting interface allow accurate junction temperature estimation when case temperature is measured.

Can FF3MR12KM1HOSA1 replace silicon IGBT modules in existing designs?

Yes, but with gate drive and layout modifications. Its lower gate charge (0.8 µC vs. >2 µC for comparable IGBTs) demands faster gate drivers, and its lack of tail current requires revised snubber sizing. Layout must minimize stray inductance (<20 nH target) to avoid overvoltage-unlike IGBTs, which tolerate higher L_s due to slower switching.

What is the maximum allowable mounting torque for the FF3MR12KM1HOSA1 baseplate screws?

The specified mounting torque for M6 screws securing the module to the heatsink is 3–6 Nm, as defined in Infineon's C-Series mechanical specification. Torque below 3 Nm risks insufficient thermal contact and elevated R_thCH; above 6 Nm may deform the copper baseplate or crack the Al₂O₃ substrate, compromising isolation integrity and thermal performance.