LT8490 Evaluation Board (DC2069A)

Hello,

I'm DFAE. I received a question about DC2069A (evaluation board of LT8490). from my customer.

We can see the silk-screen print of "SNK1"  on the PCB. What part is "SNK1"?  There are no name about this part in BoM list. Could you please advise me about "SNK1"

Is this a heat dissipation fin? If yesm could you oplease advis eme the part name of the fin?

Best regards,

Akira