"C" Suffix, PCMF1USB3S/CZ Vs. PCMF1USB3SZ

Nexperia PCM Series Common Mode Chokes

Comparison
PCMF1USB3S/CZ
PCMF1USB3SZ

According to our product manager:
It looks like the C version of these parts refers to a part that was leaded up until week 25 of 2019. Otherwise these are the same part.