How good is varnish to protect solder joints from humidity and dirt
and enhance insulation (assuming it was clean)?
John Griessen wrote:
DJ Delorie wrote:
because no-clean flux between D- and D+ on a USB line will cause
it to malfunction. It's on the order of 100k ohms at that point
even for short traces, which is significant.
I've not noticed that one yet. I'll add it to the list for the CM.
It's only an issue if you make circuit boards in your basement.
Soldermask seems to insulate it well enough to protect it from this.
Oh... I imagine in heat and humidity it could still creep across the
soldermask...
I'm sticking with water (dishwasher) wash flux and apckages with legs
to avoid the leakage.
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