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Subject:	Re: 0603 Components.
From:	Bill Raymond <[log in to unmask]>
Reply To:	TechNet E-Mail Forum.
Date:	Wed, 14 Nov 2001 12:06:35 -0500
Content-Type:	text/plain
Parts/Attachments:	text/plain (44 lines)

Dorothy, in our case, we have a big PGA thru-hole socket along with many
other thru-hole connectors that are not available in SMT format... along
with that, a VERY large percentage of the passive devices on the bottom
side of the board HAVE to be placed extremely close to the pins of the
thru-hole sockets and connectors I've mentioned...So, selective soldering
would be VERY challenging to attempt if not impossible - then there is the
problem of the products limited life span when a new replacement design
appears every 6 to 9 months!  Besides, our wavesolder temperature of 232
degrees C and a contact time of less than 5 seconds is well within the
component manufacturers specifications.  Yes, we use a single dot, stencil
printed.

At 08:35 AM 11/14/2001 -0800, you wrote:

>Why are you glueing? Can't you use a selective solderwave? Isn't exposing
>0603's to molten solder going to affect their life span? How about using a
>single dot?
>
>Dorothy Lush
>
>-----Original Message-----
>From: Stephen Owen
>[<mailto:[log in to unmask]>mailto:[log in to unmask]]
>Sent: Wednesday, November 14, 2001 5:36 AM
>To: [log in to unmask]
>Subject: [TN] 0603 Components.
>
>We are having some problems with 0603 components on adhesive, we are
>running Fugi CP6's. Using 0.3mm dual nozzles, don't seem to be able to get
>the consistency of the adhesive dot right.
>
>Many thanks
>Steve.

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