What does the W call out for Infineon # BSS84PWH6327XTSA1?

What is the difference between BSS84PH6327XTSA1 and BSS84PWH6327XTSA1? Would the one with the W be a good cross for the other part?

The W in the part number actually changes the physical size of the part.

BSS84PH6327XTSA1 (Digi-Key # BSS84PH6327XTSA1-ND) is an SOT-23 package.
SOT-23

BSS84PWH6327XTSA1 (Digi-Key # BSS84PWH6327XTSA1CT-ND) is an SOT-323 package.
SOT-323

So these will be different sizes, and would not have a matching pad layout.

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