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July 2002

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Subject:
From:
Dave Pahlas <[log in to unmask]>
Reply To:
TechNet E-Mail Forum.
Date:
Wed, 31 Jul 2002 14:10:13 -0400
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Hi Steve,

It seems more likely that your assembler is making this request in order to
reduce shorting between adjacent chip components, not shorts between two
pads of a single component. When exposed to wave solder, adjacent chip
components can often short together if there is not enough spacing between
them. A minimum of .040" is usually optimal. Also depends on board
orientation relative to the wave.

I suppose a line of silkscreen between the chips may help also, but I've
never seen this.

Regards, Dave

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