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LP38692: a

Part Number: LP38692

Tool/software:

I selected a LP38692MP-3.3/NOPB for better thermal performance compared to AP7361C-33E-13.
Both are SOT-223 package, difference is Rthja.

My query is how Rthja was vary for same package.

LM3940IMPX-3.3/NOPB & TLV1117LV33DCYR also SOT-223 package, here also same condition (Rthja was varry).

How Rthja was vary for same package, kindly give the explanation.