Thanks for posting your question in the Infineon community.
The IKA15N65ET6 tested for JEDEC47/20/22, please compare your UL QQQX2 standards with JEDEC47/20/22 if it is
matching it will be fine. or you can check in UL products website also I have check it is showing in website.
Do you mean that the UL QQQX2 standards is the same JEDEC47/20/22? I checked UL products website. However, I could not find the IKA15N65ET6. Did you find that in the website?
Best regards, MS