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From: legg <legg@nospam.magma.ca>
Newsgroups: sci.electronics.design
Subject: Re: tiny dc/dc
Date: Sat, 29 Mar 2025 10:47:14 -0400
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On Fri, 28 Mar 2025 16:49:23 -0400 (EDT), Martin Rid
<martin_riddle@verison.net> wrote:

>john larkin <jl@glen--canyon.com> Wrote in message:r
>> Check out UCC33420. It's a tiny cheap isolated dc/dc converter. It switches at 64 MHz!
>
>Why does it have such poor esd ratings?
>The ucc33421 is better, but not 15kv.
>Cheers 

It doesn't actually have an ESD rating - spec only mentions the 
relevant standards and advises care in layout.

Those are isolation test voltages you`re looking at.

RL