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September 2001

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Subject:
From:
Leo Lambert <[log in to unmask]>
Reply To:
Date:
Fri, 21 Sep 2001 11:46:47 -0400
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Hello Peter, more information is needed relative to your insufficient solder
condition. Is it related to solder in the holes, i.e. PTH? What hole sizes
are you using? What lead sizes exhibit the problem? Most likely if the
solder is filling the hole and dropping out this may be one of the causes.
From an equipment perspective, speed and temperature, must be investigated.
What are the operating temperature of the wave? Measure the temperature of
the wave, don't use the setting at which the wave temperature is set, these
are two different numbers.

There are many questions to be asked as to what this is happening, board
questions, equipment questions and process questions. Flux is only one
issue, but again, how old is it, what type is it, when was the last time it
was measured for activity levels, etc.

If you want to send me some of that information we can talk it over.

Good Luck

Leo Lambert
1-800-643-7822

-----Original Message-----
From: TechNet [mailto:[log in to unmask]]On Behalf Of Jack Crawford
Sent: Tuesday, September 18, 2001 2:20 PM
To: [log in to unmask]
Subject: [TN] Insufficient solder, spray fluxer


>>> Peter Crain <[log in to unmask]> 09/18/01 12:55PM >>>

I am having troubles with insufficient solder coming from wave solder
machine.

First, what variables tend to cause this defect?

Second, we have a base model wave solder with a foam fluxer. I am thinking
of purchasing a spray fluxer for our machine to help reduce this defect.
Would this greatly reduce defects from the wave machine?

I am new engineer in the electronic manufacturing world so please take it
easy on me if my questions are too broad and simple.

Peter Crain
GE Harris
Calgary, Alberta, Canada

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