Electronics Forum | Mon Apr 28 10:42:20 EDT 2003 | lgroves
Herman, I'm betting you will get a lot of response on this one. Frankly, everybody has their favorite machine. The trick is to consider the types and quantitys of boards you will run. Sometimes, it is better to set up a load for several jobs tha
Electronics Forum | Mon Apr 28 11:52:28 EDT 2003 | hruiz
Thanks for your responses, as gregp says, one hour in changeover is not good when you run only 10 panels, we alredy do from 10 panels to 2500 boards per run, depends on the product, we already have a pre-kitted area mounted in their respective feeder
Electronics Forum | Sat Apr 26 20:27:18 EDT 2003 | LWEI
I'm working on a protobuild for a pcba. THis pcba uses double-reflow, paste-in-hole process. On bottom side there is a Ceramic BGA, size 35 X 35 mm, thickness 6mm, over 900 balls count (ball pitch 1mm)and it weighs a hefty 20 grams. Printing uses 6 m
Electronics Forum | Mon Apr 28 09:34:37 EDT 2003 | davef
Double sided weight of component to total pad mating area ratio: 30 gm per sq inch (50 mgm per mm2) Go to the sites of these consultant-people for additional background [I'm not sure exactly where on these sites to look, but both are laden with goo
Electronics Forum | Wed Apr 30 03:44:45 EDT 2003 | chrissieneale
Lwei, Our boards are double sided and have BGA's on one side. We always run this side first so we can x-ray inspect the BGA's for short circuits, then run the second side. Depending on what industry you are in you may have some problems.. we work in
Electronics Forum | Mon Apr 28 09:59:04 EDT 2003 | davef
Your customer's question is reasonable. Soldering to nickel is not always a walk on the beach [can of corn, or whatever]. This issue is flux not solder. Your Sn63 will have plenty of strength, providing the solder connection is well formed. You s
Electronics Forum | Mon Apr 28 18:34:17 EDT 2003 | Brian W.
We typically do not try to pick up and hand placve chip resisstors and capacitors. The risk and cost is too high for components that are a penny or less. We take into consideration that on many of our components, someone will have to test them to v
Electronics Forum | Tue Apr 29 02:48:18 EDT 2003 | chrissieneale
Thanks for your replies guys, i definately will look into the retapeding option as on further inspection of the line yesterday i found that some of the reels have a crappy plastic on top of them that our feeder literally just pulls off, exposing lots
Electronics Forum | Tue Apr 29 15:45:09 EDT 2003 | davef
We have mixed bar solder from alternate suppliers in our wave soldering machine. Issues that you need to address before changing your solder supplier are: * Assure that the alloys are the same. In this, consider imaginative people may be reporting
Electronics Forum | Tue Apr 29 15:59:20 EDT 2003 | babe
First I would have your solder bath analyzed by a certified lab. Secondly I would get an analysis from each supplier that you are speaking with on their solder bar. The lowest price does not necessarily mean the best product and vice versa. Alot of p
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