Electronics Forum | Thu Sep 07 11:01:52 EDT 2006 | davef
BGA cracking is caused by mechanical stress. This may be the result of: * Rough handling of soldered board * Inadequate consideration during package design of CTE effects on BGA * Poor control of or selection of thermal ramp rates during soldering
Electronics Forum | Sat Sep 16 12:44:29 EDT 2006 | Grant
Hi, Could it be shocks in transit? This is only happening on 1 product, so might point to chassis and packing design. Does anyone know of any shock indicators that we could put inside the chassis to see if the faults are caused by this? I have seen
Electronics Forum | Tue Sep 19 09:44:16 EDT 2006 | billyd
Tom Clifford over at Lockheed put out a great Gold calculator. It works quite well in finding where you should be abd where you actually are with gold content. Is there any type of heat sink being applied to the device? Something that maybe gets scre
Electronics Forum | Thu Sep 07 14:31:29 EDT 2006 | C.K.
I just converted our waves from an old alcohol-based flux to a new VOC-Free Water-based flux. The results have been startling. However, the ladies at post-wave inspection are complaining that the solder joints are too shiny, and it hurts their eyes
Electronics Forum | Fri Sep 08 11:32:19 EDT 2006 | darburch
Solder joint too shiny, clock wrong color, she's got my chair, radio too loud, can't hear the radio, I'm too hot she's too cold change the A/C.Kindergarten wasn't this petty.OH, wait this is a heath and safety issue, I need the day off with pay. Why
Electronics Forum | Fri Sep 08 11:50:39 EDT 2006 | Rob
SN100C is designed not to corrode your pot, and can be used on standard solderpots (after a proper clean out), whereas SACX is still corrosive and if the coating is compromised then could cause problems. Get it in writing from the supplier that the
Electronics Forum | Tue Sep 12 01:50:22 EDT 2006 | meritajs
Hi All, We find out that some companents in leed free reflow soldering process have bad wetting and soldering This soldering problems caused by companent storage time after shipment Could somebody inform us about maximum storage time for different c
Electronics Forum | Tue Sep 12 19:36:17 EDT 2006 | davef
We've been soldering leadfree components for maybe 15 years. We'd be surprised not to be able to store components for at least a year, not that we purposely do that. Component fabricator process determine the maximum storage time for components. M
Electronics Forum | Wed Sep 13 09:15:19 EDT 2006 | Rob
Hi Peter, Out of the 1.5 billion components we shipped last year, we had 3 components back for solderability issues. All 3 had been taken out of their vacuum packaging and left to oxidize for a number of weeks. We don't see it as an issue, but we
Electronics Forum | Tue Sep 12 22:34:33 EDT 2006 | davef
Bob: Did you know that soldering equipment suppliers make these things that they call 'rework equipment'? This equipment employ these wacky pieces of metal, sized to each particular component, called 'nozzles'. Manufacturing companies use this rewo
