Electronics Forum | Fri Feb 17 11:01:47 EST 2006 | amol_kane
with lead-free solders, one would expect to find less instances of tombstoning. this is because SAC alloys are not eutectic and melt over a range of temp (usually 217-220 deg C) instead of at a single temperature. therefore the forces due to solder s
Electronics Forum | Tue Dec 12 01:52:05 EST 2006 | hemu_me
As we have vitronics oven(SMR610A) made in dec,1997,which has 5 heating zones and 2 cooling zones. For Lead free soldering what should be our baseline for low/medium boards.we have gathered profiles from various paste manufacturers,however we don't k
Electronics Forum | Wed Aug 22 11:58:11 EDT 2007 | ev
Thanks for all responses really good feedback. I have placed a number of extra supports underneath each pcb in the panel and by checking each print diligently we seem to be able to keep running. Not feaseable at the moment to check out leaded paste o
Electronics Forum | Sun Oct 28 08:32:47 EDT 2007 | davef
With a 7 thou stencil, we'd go 1 to 1. So for a more typical 6 thou stencil, we'd bump the aperture area by 1.15, maybe 1.2. We make no distinctions between 'innies' and 'outies'. Are you talking about castellations on land grid devices [ie, BCC�, L
Electronics Forum | Thu Oct 25 21:33:24 EDT 2007 | hussman
Castellated is the easiest lead design. Anything longer than the out side dimension of the part should be OK. However, you will never get an inspection person to say it looks OK, yet the solder joint occurs on the bottom side of the part - like a B
Electronics Forum | Mon Feb 18 08:56:44 EST 2008 | operator
It does exist. We used to have one here, but sold it. It was more of a manual process though. You put the assembled board on the work table and then set your cutting blade height. Then you manually moved the cutting blade around shearing off the TH l
Electronics Forum | Tue Feb 16 14:19:29 EST 1999 | Steve Gregory
Hi Kris!! There used to be a company named Fancourt Industries that sold tools that would "recondition" leads...but I did a pretty throrough NET search and they didn't show up...hmmmm, must've went out of business or they got bought... A
Electronics Forum | Mon Nov 16 07:08:54 EST 1998 | Michel SORGIUS
We have board handlers for automatization of lead trimmers. Michel | I have been requested to explore the possibilities of using an inline lead trimmer in our manufacturing process. I have a few questions I need answered. | 1. Can anyone recommen
Electronics Forum | Mon Nov 01 10:44:03 EST 2004 | Denis
If you need to loook at lead free ovens then you owe it to yourself to look at Manncorp. You all know our name but did you know that for 30 years we have scoured the earth to bring you high quality low cost choices in SMT equipmenmt? Look at the ne
Electronics Forum | Mon Feb 15 13:28:49 EST 1999 | Kris
| | Hello all, | | Looking for an automated device for straightening the leads of TSOPs and other gull wing devices prior to tape and reel or tray placement. | | Appreciate any help! | | Kris | | | Kris: Check: | | 1 SMTnet archives | 2 SESA 1700 W
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