Electronics Forum | Fri Apr 24 07:55:12 EDT 2009 | davef
TOMBSTONING OF 0402 AND 0201 COMPONENTS: "A STUDY EXAMINING THE EFFECTS OF VARIOUS PROCESS AND DESIGN PARAMETERS ON ULTRA-SMALL PASSIVE DEVICES" Michael Yuen, Heather Benedict, Kris Havlovitz, and Tim Pitsch, Plexus Electronic Assembly Corporation, N
Electronics Forum | Thu Nov 16 14:22:48 EST 2000 | Kris
Howdy Y'all, I have seen a problem lately with getting the 0402 parts out of the tape and onto a PCB. We are using Universal HSPs with 8 X 2mm feeders in good condition. The components are manufactured by Rohm. The tape and components appear to b
Electronics Forum | Fri Nov 17 00:27:30 EST 2000 | DL
Kris, I gather from your description that the component can not be picked consistently. Meaning that the machine can place the component. How does the component place? Is the placement text book? Take a good look to see if the component isn't being
Electronics Forum | Thu Jan 20 15:47:39 EST 2000 | Kris W
Rob, I am currently using a BGA-3000 from OK, which works fairly well. I did find that the customer support for the purchase of nozzles and stencils was very poor (overpriced and long lead times). I did find stencils for a good price through Mini
Electronics Forum | Tue Dec 14 12:00:34 EST 1999 | Kris Wiederhold
We recently reduced our standard aperture reduction to aid in the reduction of solder on gold defects. Since this reduction in aperture size, we have been experiencing exposed copper at the end of the component pads. The heel and toe joints are per
Electronics Forum | Wed Feb 17 06:43:03 EST 1999 | Kris Wiederhold
| Steve, Thanks for the input, but I'm afraid I'm only allowed a three day turn from DRAM to finished product to include those pesky test failures/repairs. I'm sure you know how that goes. In-house may be the only way for me! By the way, I just
Electronics Forum | Wed Sep 09 11:20:32 EDT 1998 | Frank Johnson
I don't know HOW to straighten them beyond using tweezers (which squish the columns) or a thin strait-edge (which is difficult to manipulate between the columns). Is there a machine that can do this? Or a special hand tool? Kris, We make special ha
Electronics Forum | Thu Jul 03 18:14:03 EDT 2003 | russ
Kris, I don't know what I HAVEN'T SEEN yet cuz I haven't seen it. (HAHAHA) It is kind of like when you are looking for something and you always say after you found it that it was the last place you looked (Why would anyone keep looking for something
Electronics Forum | Wed Jul 19 16:20:34 EDT 2006 | dave
kris, Thats what I said when the rep. advised me. But I had called him in to advise me on some problems I was seeing on a certain boards. When we ran at this elevated Temperature "bingo" the results were perfect. So as you know yourself wrt wave pro
Electronics Forum | Fri Nov 17 15:20:37 EST 2000 | Kris
Dave, That's exactly what we are seeing. There is a trail of components leading away from the pick point, all of which are 0402 parts. I can remove the feeder from the machine, advance a few parts into view, turn over the feeder and only half will
