Here's a step-by-step to find your package type and the dimension:
1. Find your Package Type and Package Code from your OPN: 10M16SCU324C8G.
Package Type: U
Package Code: 324
2. Use this Package Type and Package Code to find your Type of Container, Lead Count and Body Size from this link: https://www.intel.com/content/dam/www/programmable/us/en/pdfs/literature/an/an071.pdf
Thus, your Type of Container is Tray, and you can find your dimension based on above table with information from your Primary Supplier.
Hope this answer your question.
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