Electronics Forum | Fri May 21 14:22:56 EDT 1999 | Dave F
| Dave, | i tried reflowing bare boards with only solder printed on em and no component placed. we still got voids as same as when components were placed. so atleast one of that theories(voids due to component/component placement)could be considered
Electronics Forum | Wed Jul 27 17:01:14 EDT 2005 | Dreamsniper
Issue: At 60'C test PCB Fails. Operator did simulation. Use of Heat Gun to heat up the BGA to 60'C while PCB is powered and running. At 60'C BGA fails. When pressed system is back which means that something becomes open. Sent BGA for SEM and found t
Electronics Forum | Fri Dec 16 10:25:14 EST 2005 | GS
Hi Liza - polystirene monolayer (blend ?) could be sealed at less presure, ie 35-40 PSI. Temprature could be 165�-170�C. For sure after sealed you shoud make sure the sealing strength (peel strength)should meet min 15-25 N.(bet avg from 25 to 45 N)
Electronics Forum | Fri Feb 26 19:27:04 EST 2010 | dcell_1t
you can find a very helpful guide here... http://www.oee.com/pdf/oee-pocket-guide.pdf We basically have a database where operator input the boards produced per hour and if he can't reach the "standard" he can input a downtime issue and assign to a
Electronics Forum | Wed Jul 18 08:00:48 EDT 2001 | davef
250C flass transition temperature - M = coloring agent or opacifier added to F resin with 110-150C glass transition temperature - N = natural color of resin - P = coloring agent or opacifier added to resin - T = natural color F resin blended with
Electronics Forum | Tue Dec 28 20:34:24 EST 1999 | Dave F
Hey Justin good to see you. You've been using your Terra box for a while now. Cabinet suppliers are: 1 Nitrogen boxes STANLEY STORAGE SYSTEMS P.O. Box 1151/11 Grammes Rd, Allentown, PA 18105-1151 800-523-9462 fax 610.776.3895 storagesystems@mail.
Electronics Forum | Fri May 01 14:00:59 EDT 1998 | Chrys
I've never seen this before. Today, I got this tombstoning on Tantalum Capacitors (Okay, I saw that before) Here's the part that seems weird to me: -They didn't tombstone onto a termination - they went onto their sides! That's right, both terminati
Electronics Forum | Sat May 02 00:51:14 EDT 1998 | Rick
I agree with Steve...most certainly a placement occurance. I've seen this on many occasions with Panasonic equip. Change your feeder first and then check your component packaging. | I've never seen this before. Today, I got this tombstoning on Tan
Electronics Forum | Wed May 24 16:01:08 EDT 2006 | samir
GEB, Datasheets are usually just guidelines and most App. Engineers from paste companies will tell you that as well. You don't have to "copy exact" what they say, but rather set your oven to what gets you and your type of boards the best results. P
Electronics Forum | Mon Nov 10 11:59:41 EST 2008 | sliebl
Mark, The 10011 and all other process types are hard coded by Contact Systems and can not be changed by the user. The user can, however, change the Vision Center Type information as well as the Vision Size Code. Our Center Type for SOT23 is: Process
