Hi Daan,
That 220V sounds an awful lot like MAINS voltage. If that is the case you
probably need to worry a lot more about spacings dictated by safety
agencies, like UL in the USA or KEMA in The Netherlands, rather than
following the common V/mm guidelines.
On top of setting the rules for proper spacing between those pins they also
have rules regarding the spacing between those two pins and everything
else!!
The actual values depend on the purpose for which the board is being used.

Veel plezier,
Ahne,
A-Laser, Inc.



-----Original Message-----
From:   TechNet [mailto:[log in to unmask]] On Behalf Of d. terstegge
Sent:   Monday, November 26, 2001 07:46
To:     [log in to unmask]
Subject:        [TN] Isolation between connector pins

Hi Technetters,

On one of our new designs must be able to withstand a 220 Volt AC between
two pins of a SMD-connector with a spacing between the pins of about 0.5 mm.
This seems a bit on the critical side, and the designer asked me if it is
possible to have some extra isolation between these pins. I was thinking
that a drop of solderresist that we sometimes use for repairs would do the
job, but I'm not sure that it'll work. Maybe someone can give me a better
advice ?

Daan Terstegge
SMT Centre
Thales Communications
Unclassified mail
Personal Website: http://www.smtinfo.net

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