LMZ21701: Request for gold plating thickness

Hi Andrew, 

You can find this useful for NiPdAu: (+) [FAQ] What is the thickness of Gold (Au), Palladium (Pd), or Nickel (Ni) for TI's NiPdAu lead finish? - Logic forum - Logic - TI E2E support forums

As for NiAu:  You can refer this whitepaper. It mentions "For a PCB using a Ni/Au surface finish, the gold thickness should be less than 0.5 µm to avoid a reduction in thermal fatigue performance"

Regards,

Gautam