Ha ha
I would come at it like this.
If you were showing me a board for the first time you might say something
like: You'll probably need a glass for this one - it's pretty dense.
So I see the standard's wording as a permission: It's ok to use
magnification.
Or if you really need a definition:
High density or fine pitch is when you need magnification to inspect it.
Regards
Mike
From: TechNet [mailto:[log in to unmask]] On Behalf Of Douglas Pauls
Sent: Thursday, March 14, 2013 12:16 PM
To: [log in to unmask]
Subject: Re: [TN] Cleanliness
Well obviously high density is anything more dense than medium density.
Doug Pauls
From: Inge Hernefjord <[log in to unmask]>
To: <[log in to unmask]>
Date: 03/14/2013 06:53 AM
Subject: Re: [TN] Cleanliness
Sent by: TechNet <[log in to unmask]>
What tells me what constitutes a high density: your eyes
Best
Inge
On 12 March 2013 08:50, Sue Powers-Hartman <[log in to unmask]> wrote:
> Per 610E, visual inspection may require the use of magnification when
fine
> pitch or high density assemblies are present. What tells me what
> constitutes a high density assembly. Are there measurements listed
> somewhere that I can reference.
>
> Thanks
>
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