Joe -
I don't have a copy of EN60950-1, however IEC60950-1
includes a note to Subclause 6.1.2.1 that reads, In
Finland, Norway and Sweden, there are additional
requirements for the insulation. In the EN version, what
is difference from the base standard this note refers to, if
the Supplementary
In a message dated 7/8/02 10:36:19 AM Eastern Daylight Time, Alex McNeil
writes:
Q1. Is 2.5mm OK (Norway and Sweden are to be included) and what is the
minimum?
Q2. Does this creepage and clearance need to apply to all 6 layers (and 4
layers)?
Hi Alex:
I am out of my office for the
Alex,
What I have done in your situation is to treat the inner copper layers
of the card as Polution Degree 1 (sealed so as to exclude dust and
moisture), and calculate creepages and clearance from there. This
protects you just in case you have a small air pocket in the inner
layers. Some
Distance through insulation is not defined for 1010-1 products. Min
insulation for x950 products is 0.4mm. Spacing, as determined from WV
measurements shall be maintained at edge and adjacent to through-holes.
Reference 60950:2k clause 2.10 for multilayer PWBs.
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