I wanted to pose the group a question in regards to spacing requirements for
the U.S. Many UL standards allow for the exception of components (such as
semi conductors, switches, etc) to not meet spacing requirements (as they
usually have different standards they meet anyways) The question is what
about PCB trace spacing for those components, such as a capacitor in a
switching power supply to ground. High voltage, the components is an
exception, but what about the pads under the component, are they required to
meet the spacing requirements, or would that fall under the component
exception?
Any comments would be appreciated.
Thanks,
Ken Matsuda
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