What the key ratings mean for the BOM
The IPS70R900P7SAKMA1: The 700 V Vdss gives you a solid margin on a 400 V DC bus — typical in power-factor-correction stages and flyback converters — without pushing the derating curve. At 1.1 A drain current with 10 V gate drive the Rds(on) is 900 mOhm max; that's the number to plug into your conduction-loss calculation at full load. The 6.8 nC gate charge is low enough that a standard MOSFET driver IC can hit the switching frequency without excessive dissipation in the driver. Input capacitance is 211 pF at 400 V Vds — that's the Miller plateau charge the driver has to push, and it's small enough to keep switching losses in check for a 700 V part.
Lifecycle and compliance
It's ROHS3 compliant, so it passes the material declaration for EU and most global markets. The series is CoolMOS™ P7, Infineon's mainstream high-voltage MOSFET platform; replacements and second sources within the same voltage and Rds(on) class exist, but no direct pin-compatible alternate is listed in the official cross-reference. If you're qualifying a new BOM, this is a current-production device you can design in without worrying about a sudden EOL.