i am looking for a drop in replacement or similar for STMicroelectronics pn SPAC265BC12P0.30
Sorry, there is no drop in replacement for STMicroelectronics ’ Obsolete MPN SPAC265BC12P0.30 .
The most similar options are:
RAC03-12SC from Recom Power or
VSK-S3-12U from CUI Inc.
Please check the differences here: