Its 8-SOIC (0.154, 3.90mm Width) package is adopted for higher flexibility.The packaging method is indicated by Tape & Reel (TR).It's mounted on the way to Surface Mount.Many related parts can be found under its base part number IX*611.Devices have 8 pins available.
IXF611S1T/R Features
Embedded in the Tape & Reel (TR) package 8 pins
IXF611S1T/R Applications
There are a lot of IXYS IXF611S1T/R gate drivers applications.