Electronics Forum | Thu Jun 09 09:08:09 EDT 2005 | russ
It's normal for us when we review design. We have found that in the Y axis we need .015" whereas in the X axis we can use .005" spacing. this relates to our nozzle size vs. pickup skew etc... This wouldn't apply if there are parts taller than XXX
Electronics Forum | Mon Sep 18 11:55:35 EDT 2000 | Ricardo Fuentes
Hi! cold someone advise me about the minimum gap allowable in between 0404 parts. The minimum distance is because of the behavior on reflow, the re-work difficulty or anything else. Thanks
Electronics Forum | Mon Sep 18 14:53:24 EDT 2000 | Ricardo Fuentes
Hi, could someone tell me how may I certify or evaluate 0402 parts on SMT process, waht are the main points I have to check. Thanks
Electronics Forum | Mon Sep 18 20:51:35 EDT 2000 | Dave F
A fairly dense brickwall would have 0.020" (0.05mm) spacing
Electronics Forum | Wed Jul 01 07:51:29 EDT 2009 | wrongway
Hello All We are going to run our frist 0402 parts soon. do I need to go to .005 stencil or will .006 work ? do I need to use a type 4 paste ? pad design does a standard rectangle work or the round pads ? Thanks in advance for any replies.
Electronics Forum | Tue Jun 02 16:16:35 EDT 2015 | ldempsey
Well, I'm speaking in general Our stencil guy insists on those part edits at 100% He's one of the loudest voices calling for me to "Stop slamming the parts into the PCB" All my research so far says we need to be looking at the stencil apertures.
Electronics Forum | Thu Jul 02 11:03:59 EDT 2009 | wrongway
Thanks for the replies guys they will help me out. this website in genral has been veary helpful for many years.
Electronics Forum | Mon Jan 07 10:28:20 EST 2008 | bobpan
Hopefully you dont have a lot of 0402 placements. You must have 'quality' feeder/feeders for the 0402 parts. You then should limit the picking to 1 head for those parts. Do this by assigning only 1 xf nozzle in your program. oh....Straight z-rods wi
Electronics Forum | Wed Apr 15 17:16:00 EDT 2009 | rmitchell
Hi, I am trying to reduce some 0402 cap tombstones. The main cause is the pad spacing is a little too far apart and the parts are as tall as they are wide .5mm I am stuck with the pad spacing for a while. All other parts are soldering well, even 0
Electronics Forum | Wed Jul 01 08:15:13 EDT 2009 | dwelch123
You can use regular paste and a .005 stencil will help reduce tombstones. It's just that easy. I run 0402's all the time without any problem, just make sure your profile is a good one!
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