Electronics Forum | Thu Aug 10 13:12:10 EDT 2000 | Bob Willis
You may care to review the following from my Circuits Assembly page on line. "HOW FLAT IS FLAT AND DO WE NEED FLAT CIRCUIT BOARD, YES WE DO ? As production problems go there is one that keeps reoccurring time and time again. The blame is usually di
Electronics Forum | Tue Aug 24 07:09:16 EDT 1999 | Brian
| | This is out of the normal scope of this site but� | | | | I am in search of a Digital Camera for use with documentation instructions. What would be the Minimum Resolution that I should require? I will need details of assemblies such as Compone
Electronics Forum | Wed Apr 21 22:15:12 EDT 1999 | Chris
| I'm having problems with trying to get a good solder joint using a Ceramic PCB. We are using AMTECH hi-temp solder (ws-486 96.5/3.5ag). My profile looks great and I used the recommended profile from Amtech with a few adjustments. My max temp is abo
Electronics Forum | Thu Jan 21 15:24:18 EST 1999 | Terry Burnette
| I have received prototype PBGA (256 pins) devices from | Motorola (actual part number = KXPC850ZT50). These parts seemed very warped on the edges. When I put the part on a plain surface, it rocks quite a bit when I press lightly on a corner. I h
Electronics Forum | Thu Apr 17 05:14:40 EDT 2008 | gregoryyork
I have seen similar things like this before with Solder Resist redepositig back on the pads, this is a clear residue very hard to see. Solder resist will obviously resist solder adhering to it. If you rework the boards then the heat of the iron will
Electronics Forum | Mon Mar 16 18:15:32 EST 1998 | ETS, LLC
Problem occurs because the glass transition temp for FR4 is lower than reflow temperature. Our company wrote an article which was printed in SMT magazine some years ago that deals with this exact subject. Best way to deal with this is to use a center
Electronics Forum | Fri Jun 14 00:35:58 EDT 2002 | kenbliss
DaveF's request for more data of course is needed to be specific, but here are a few ideas and places to start. If the SMT line is causing the defects you need to identify where on the line the problem is being caused. What we see regularly is mish
Electronics Forum | Fri Jun 04 14:00:32 EDT 1999 | Arthur Burdick
Wendy, we at ASG make electric presses for press fit connectors, and have made fixtures for AMP Zpak connectors. give me a call i believe we can help. 561-848-6746 Arthur | Wendy.. | | I found that little nugget a good one from my connector supp
Electronics Forum | Fri May 16 10:06:44 EDT 2003 | pjc
Traceability of raw material, personnel and equipment performance during product manufacture: Tracing raw material is done by recording the material mfg.�s batch-code that they assign during the material�s manufacture. This is everything from the fl
Electronics Forum | Mon Sep 13 06:23:06 EDT 1999 | Earl Moon
| | We have a product, with various PWBs, with over 600 parts each one (We are a low Volume/high mix company with an average component placement per PCB between 250 to 300 parts). This PWBs have 7 to 10, 20 mils pitch parts. We are having problems wi
