Electronics Forum: underfill and keep and out (Page 1 of 7)

small and good pick and place machine

Electronics Forum | Thu Sep 05 23:18:03 EDT 2013 | feiyangniao

There is a new toy I received today: a NeoDen TM-240A automatic desktop pick and place machine! I’ve kept my eyes on this baby for a quite a while, and finally decided to make a purchase last week. The shipping was very fast: DHL from China, a total

Processing questions - PCB and BGA's

Electronics Forum | Fri Jan 30 14:20:55 EST 2009 | scottp

I do a lot of thermal cycle testing of new components for my company and often when I lay out a test board I'm trying to simulate 4 or 6 layer boards but I don't need them for routing so I just use a solid fill of a cross-hatch pattern. I've done it

Inventory control and maintenance

Electronics Forum | Thu Feb 26 14:47:19 EST 2015 | superlen

unique mnf/mnf part number. - Be meticulous on maintaining your WO Boms. Train your employees to not circumnavigate keeping the WOBOM accurate to what they kitted/placed on the board. If you keep the one to one part number relationship above this is

SPC and Wave

Electronics Forum | Thu Jul 14 11:52:16 EDT 2005 | davef

Sure you can use SPC charting on the wave setup parameters to warn of impending problems. Examples of useful points of analysis are: * Dwell * Temperature * Pot analysis Certainly there's a range of other process controls that could be monitored.

Wasting Time and Bandwidth

Electronics Forum | Thu Sep 23 12:42:02 EDT 1999 | Bob Barr

Dear Administrator, On 9/25, a forum user named Seli posted a question titled "Electronic Manufacturing on the Beach". Out of 11 responses to his posting, exactly one had anything to do with his question. The other 10 were completely off topic. P

Wave and Reflow Profiler

Electronics Forum | Tue Feb 19 09:41:26 EST 2008 | slthomas

ECD sells the MOLE, and they sell both the Oven Rider and the Wave Rider to accompany it. The thing is, you can profile both an oven and a wave machine without either if you're willing to just solder your thermocouples to a board. The nice thing ab

PCB Storage and FIFO

Electronics Forum | Tue Sep 23 13:08:26 EDT 2008 | slthomas

Put the new stuff in the back and pull from the front. A pass through from stores makes that a lot easier. Bar codes are a wonderful thing if you can get people to use them. Wand it into stores then wand it sequentially into production via a queue.

SPC and Wave

Electronics Forum | Thu Jul 14 16:05:55 EDT 2005 | russ

Good answer slthomas! This has got to be the biggest misconception out there. To perform SPC on a wave process you must first perfrom DOE to determine the critical parameters and or control limits. For example you will need temp reading devices tha

Re: MoonMan and Tetras

Electronics Forum | Mon Apr 26 17:31:14 EDT 1999 | Earl Moon

Hey MoonMan, Did I catch in one of your fabulous threads that you're using Tetra stencils? I'm anxious to find out how you're liking them. We we're all set up to go to Tetras, then mgt decided to close down our factory - Dooop! "Foiled"

CCGA and overprinting?

Electronics Forum | Mon Oct 15 10:51:49 EDT 2001 | davef

On over printing, the general issues are: * Paste deposits being so large that when reflowing, collapse onto many, rather than a single solder mass. * Paste expanding during heating and being close to other solder deposits and bridging [as you say].

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