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Tricky SMPS fault in Wharfedale SPC 12
Tricky SMPS fault in Wharfedale SPC 12
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Old 24th January 2020, 08:17 PM   #11
ubergeeknz is offline ubergeeknz  New Zealand
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Thanks Mark, that's the only conclusion I could draw as well.

Perhaps someone scaled down a working design for layout purposes, without much thought for the component ratings.

Here is a table for some typical thick film smd resistors, they rate 0603 at 25v and isolation of 50v. It appears they do not rate any for more than 200v, even in the larger footprints.Screenshot_20200125_091157.jpg
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Old 24th January 2020, 09:02 PM   #12
ubergeeknz is offline ubergeeknz  New Zealand
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My mistake, 50v (by 0603 I mean the 1/16 size here)

Confusing having two similar standards for the component sizes Tricky SMPS fault in Wharfedale SPC 12
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