Hi Sue,
A couple years ago we had the same problem. And we did send the units over
the wave solder a second time. As IPC 610 notes, you can verify with 10X or
reflow. Agreeing with you that there is no mention of reliability if you
reflow, it is a big gamble to resolder but really need to know what type of
components are on your boards as our boards did not have and IC's, mainly
resistors, transformer. At this time, we do have component prep equipment to
cut and form our components (we do have more heat sensitive components now).
Short term suggestion would be cutters that cut and clinch.

Bob Arciolla
Endicott Research Group
Quality/Safety Manager
607  754-9187 ex 3034
607  754-9255   fax
cell 607 624-8516
----- Original Message -----
From: "Suzanne Runals" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Friday, August 04, 2006 3:25 PM
Subject: [TN] Lead Cutting/Fractured Solder Joints


We are experiencing fractured solder joints in our manufacturing
process. We know it is caused from the lead trimming we are doing. We do
not have automated equipment that will cut and clinch the leads.

 I wanted to reflow the boards a second time until we get our process
under control but not everyone agrees with that. They are afraid of
damage to the components caused by the heat of the reflow. Has anyone
else experienced this issue before and what did you temporarily do to
alleviate the problem while working on the real issue of the lead
cutting process. I have tried visual inspection but these boards are
dense boards and we missed some joints and they were returned to us
again by our Customer.

IPC 610 section 7.5.5.8 states you may reflow and it is not considered
rework. However they mention nothing about reliability if we do this.

Thanks
Sue Runals
QA Mgr.

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