Electronics Forum | Thu Jun 22 09:33:40 EDT 2000 | Sal
Guys Just completed a PI build. And for the first time found that some chip components are skewing. The board is approximately 8x8inches and is six layer double sided FR4. To minimise and eradicate solder balling all the chip components have been co
Electronics Forum | Wed May 31 17:37:29 EDT 2000 | Arturo
I�m also having this problem with Panasonic film capacitor. Even when I have the correct pad size according to Panasonic data sheet the tombstoning occur. I am thinking that the problem could be the plating of the film capacitor. The only way I could
Electronics Forum | Fri Apr 14 09:14:29 EDT 2000 | Rich Ziebell
C.Long, Have you thought of using a barcode reader system? Though costly, such a sytem would minimize the room for error and neglect by your operators. Yes, physical tickets would still need to be applied (barcodes labels) but there would be less ef
Electronics Forum | Tue Feb 06 18:12:46 EST 2001 | davef
Pete makes great points. Taking a slightly different angle, use your placement equipment's software to help you. It keeps track of the number of picks and attempts for each location. Study these numbers for a week and determine the capability of p
Electronics Forum | Thu Mar 29 11:36:49 EST 2001 | Rob Fischer
Our company and most others do no specify any specific chemistry but offer equipment with configurations for running the best chemistry based on your application. Listed in one of Mike Konrad's postings are the contacts for chemistry. Ease of maint
Electronics Forum | Mon May 28 04:29:16 EDT 2001 | hello
we met the same problem with audit, and i make a tooling log for each stencil and in tooling log , set up some criteria for checking such as tension , mechanical damage, printing result ect. The stencil will be checked periodicly by process engineer,
Electronics Forum | Fri Aug 24 14:56:11 EDT 2001 | Hussman
Paul, All the machines yulisted are very god at placement. One thing to keep in mind is parts availability. Some of our jobs come from the customer in "kits". Not everyone supplies you with a full real of parts. Be sure that the machine you pick
Electronics Forum | Wed Jun 13 21:33:34 EDT 2001 | davef
Todays crazy idea?! (environmental safe) February 22, 2001 05:33 AM Mattias Andersson [http://www.smtnet.com/Forums/index.cfm?fuseaction=view_thread&CFApp=1&&Message_ID=5343&_#Message5343] Turning things just a bit, our working theory is: burnt flux
Electronics Forum | Fri Jan 14 16:22:05 EST 2000 | JAX
The feeders that you are probably refering to are made by hoover-davis. They only have adjustable pitch( electronic ). You probably will not find a universal feeder that has adjustable width. This is because the guide track is positioned on the left
Electronics Forum | Tue Dec 14 11:08:19 EST 1999 | John Thorup
I think you're on the right track Paul. You didn't mention what type of solder mask was used but I'll presume that it was LPI (liquid photo imagable). If development of the image is incomplete some mask can remain where it is unwanted. Sometimes im
