I was having no trouble with an encrypted model for the Nexperia BUK9M48-80L in older versions of LTSpice until I updated to the latest LTSpice 24.1.5. I am trying to understand what went wrong, or how to get their model to work again. LTSpice seems to not be recognizing the .lib contents as encrypted and trying to use it as a simple unencrypted model.
Link to part: BUK9M48-80L (N-channel 80 V, 48 mOhm logic level MOSFET in LFPAK33) | Nexperia
The zip file includes a symbol and a small test circuit for verification on their site, so normally it is easy to implement.
Thanks for checking!
-Mark Wyman